Ground Radar stations in the UK 1937 -1945

The table below shows a 'full' listing of UK based ground based radar stations involved in the control and reporting role under the control of No 60 Group.

Name	Details
Aberleri	This was opened in late 1942 as a Mobile GCI Station under the control of No 77 Wing, being allocated to the Valley Sector, parented by RAF Aberystwyth It was transferred to No 73 Wing on 1 July 1943 and was placed on Care & Maintenance in early 1944, and was closed down on 1 July 1944.
Amble	An opening date for this station has not found but by the end of 1942 it had been declared redundant.
Anstruther	This opened as the first CHL (Type 2) station (43A) on 1 November 1939 originally under the direct control of HQ Fighter Command, it was transferred to the newly formed No 60 Group on 23 February 1940, parented by RAF Leuchars. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 72 Wing, which took over the parenting responsibilities. At the end of 1942 it was engaged on air reporting and stand-by surface watching. It was transferred to No 70 Wing on 15 May 1944, and disbanded on 31 May 1946. On 25 September 1950 it was transferred as an Inactive Station without equipment to HQ, No 66 Group, Home Command. No 351 Signals Unit (Anstruther) was formed on 30 October 1952. The station was placed in C & M at some point until 1 September 1958, when it disbanded and the station was reduced to inactive status, parented by RAF Leuchars.
Appeldore	This station probably opened on 22 January 1943 in No 75 Wing under the control of No 11 Group, being placed in the Biggin Hill Sector and was parented by RAF Hawkinge. It was closed down on 1 July 1944.
Ard-Rudha-Mar	This station was in the process of forming in April 1941 and had opened by July 1941 under the control of No 72 Wing. It probably closed between July and December 1941.
Avebury	This GCI station commenced formation in late 1940 in No 60 Group, parented by RAF Colerne. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 76 Wing, which took over the parenting responsibilities, however, on 14 April it ceased to be a separate unit being taken onto the establishment of the Colerne Sector. It had closed by the end of October 1941 and been dismantled following the opening of the station at Cricklade.
Ballinderry	This station (27G) opened as a mobile GCI station in August 1941 under the control of No 79 Wing. By February 1942 it was allocated to the Ballyhalbert Sector, parented by RAF Ballyhalbert and on 1 February was transferred from No 60 Group to No 82 Group. By January 1943 it was an Intermediate Mobile station and was transferred to No 72 Wing on 1 July 1943. The GCI station ceased operations on 18 August 1944 and by March 1945 it was a Type 8C GCI station on Care & Maintenance (Stage III). The CHB station was closed down on 7 March 1945 and RAF Ballinderry was closed on 1 July 1945.
Ballycranmore	This was formed in December 1940 in No 60 Group, parented by RAF Sydenham. By July 1941 it had been resited and renamed RAF Roddens Point under the control of No 77 Wing, which took over the parenting responsibilities. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching. It was transferred to No 79 Wing on 27 September 1941 and then to No 70 Wing on 1 July 1943. By June 1944 it was a Type 2 station on Care & Maintenance (Stage II).
Ballydonaghy	This was commissioned in 1942 as a Intermediate Mobile GCI Station and had opened by May 1942 under the control of No 79 Wing, replacing Bishop's Road, allocated to the Eglinton Sector, parented by RAF Eglinton. It was used as a CHB station after April 1943, although the GCI station was under Care & Maintenance by January 1943. By June 1943 it was on Care and Maintenance and was transferred to the Ballyhalbert Sector in No 72 Wing on 1 July 1943. By March 1945 was a Type 8A GCI station on Care & Maintenance (Stage III). The CHB station was closed down on 7 March 1945 and RAF Ballydonaghy was closed on 1 July 1945.
Ballymartin	By January 1941 this was proposed as a CHL station as station 78A with construction being underway by April and it had opened by July 1941 under the control of No 77 Wing. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching. It was transferred to No 79 Wing on 27 September 1941 and then to No 72 Wing on 1 July 1943. By January 1945 it was a Type 2 station on Care & Maintenance (Stage II), and disbanded on 31 May 1946.
Ballywooden	This station (29G) opened as a mobile GCI station in August 1941 under the control of No 79 Wing, and by February 1942 it was allocated to the Ballyhalbert Sector, parented by RAF Ballyhalbert. By January 1943 it had become an Intermediate Transportable station but was due to be upgraded to Final standard by mid-August 1943. It was transferred to No 72 Wing on 1 July 1943 and disbanded 18 August 1944. The Type 7 station disbanded on 31 May 1946. On 25 September 1950 it was transferred as an Inactive Station with equipment installed to HQ, No 67 Group, Home Command, but was transferred to No12 Group, Fighter Command on 1 April 1951. The GCI station was redesignated No 197 Signals Unit on 1 November 1951, which disbanded on 1 April 1956.
Bamburgh	Work on this CHL station (41A) began in January 1940 as part of the second 'crash' programme and was operational by the end of February, parented by RAF Usworth. It was originally under the direct control of HQ Fighter Command, it was transferred to the newly formed No 60 Group on 23 February 1940. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 73 Wing, which took over the parenting responsibilities. It was commissioned during 1942/43 as a Tower station. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching, it had also been allocated 10cm Mk VI (T) equipment. It was still operational in October 1945, but disbanded on 1 June 1946. Officers Commanding: - xx Jan 1940 Plt Off-Act Flt Lt H Clarke 18 Sep 1940 Plt Off C I Rutherford 5 Nov 1940
Bard Hill	Originally commissioned as an Inter Service CD/CHL station under War Office control, it was transferred to the Air Ministry on 24 January 1942 and placed in No 60 Group, under the control of No 74 Wing. At the end of 1942 it was engaged on air reporting and stand-by surface watching. It was transferred to No 73 Wing on 1 July 1943 and was still operational in October 1945. On 1 June 1949 the CHL station was returned to operational status in Northern Signals Area. The CHL (+ CMH) station was redesignated No 344 Signals Unit on 1 November 1951.
Barkway	This station opened between July 1943 and January 1944 under the control of No 73 Wing. On 1 December 1947 it was operating a Type 7132 (GEE Monitor) and was transferred from Southern Signals Area to Northern Signals Area. It was redesignated No 635 Signals Unit on 1 November 1951. The domestic site was reduced to inactive status on 1 May 1958, parented by RAF Bassingbourn in No 1 Group.
Barrapoll	By February 1941, formation of this station was underway and it had opened by July 1941 under the control of No 72 Wing, as a CHB station. It was placed on Care & Maintenance on 12 October 1942. By June 1943 it was a Type 8C station on Care & Maintenance (Stage II) and was transferred to No 70 Wing on 1 July 1943, and disbanded on 31 May 1946.
Barrow Common	An opening date for this station has not found but by the end of 1942 it was available as a stand-by surface watching station only, operating 10cm Mk VI equipment on a 200ft tower and had been allocated high power transmitters.
Bawdsey	This was the site of the first CH station and was involved in the early development work on the system. It was also one of the first five sites chosen in 1936 for the Intermediate Chain as both a transmitting (one 240 ft tower) and receiving station (two 240 ft towers). It was retained as one of the sixteen sites in the Main Chain begun in 1937 as Station 26. Authority for the construction of a Final CH station operating on 22.69 and 27Mc/s was given in March 1939. Originally under the direct control of HQ Fighter Command, it was transferred to the newly formed No 60 Group on 23 February 1940. It ceased being a self-accounting unit on 30 July 1940 was was parented by RAF Martlesham Heath. By January 1941 it was both as CH (26) and CHL (26A) station with an Emergency Alternative MRU being proposed at Loftmans (26M) but it is not known if this was completed at the moment. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 74 Wing, which took over the parenting responsibilities. During 1942/43 it was commissioned as part of the Buried Reserve. Type 55 At the end of 1942 it was engaged on air reporting and stand-by surface watching operating 10cm Mk IV equipment which was due to erected on a CH cantilever and had been allocated high power transmitters. It was transferred to No 75 Wing on 1 July 1943 and a CHL/GCI Station was formed here on 25 October 1944. The GCI station was disbanded on 1 August 1945 and it was still operational as a CHL and CHEL (Type 55) station in October 1945. On 1 December 1947 it was operating Types 1, 2, 13, 55 and BR and was transferred from Southern Signals Area to Northern Signals Area.
Beachy Head	Work began in 1938 at the site of an 'Advance' CH station to provide additional coverage. Opened in about June 1940 under the control of No 60 Group, parented by RAF Kenley, by January 1941 it was a CHL station as station 07A. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 75 Wing, which took over the parenting responsibilities. It was commissioned in 1942/43 as a Type 14 station with Type 273 Naval equipment. At the end of 1942 it was engaged on air reporting or controlled interception and was a stand-by surface watching station with CD/CHL and was operational with 10cm Mk IV equipment but was due to be upgraded to Mk V and had been allocated high power transmitters. In early 1943 a Type 16 AME Station had been sited here under the control of MAP, but on 1 April 1944 it was transferred to the control of No 11 Group, administered by No 75 Wing. The CD/CHL station was closed down from 17 May 1944, but on 20 July 1944 a Type 13 Mk II commenced forming. The Type 16 equipment was placed on Care and Maintenance on 5 October 1944. The Type 24 station was transferred from HQ Fighter Command to No 60 Group on 24 November 1944. By March 1945 it was a Type 16 station on Care & Maintenance (Stage I). The GCI station was disbanded on 1 August 1945. A Type 31 Station was opened at some point and this closed on 1 November 1945. The CHL, Type 14 Mk 1, Type 16, Type 24 and CD No 1 Mk V Stations were all disbanded on 1 June 1946. On 15 August 1950 it was transferred as an Inactive Station without equipment to RAF Wartling, Fighter Command. No 880 Signals Unit was formed on 28 February 1952 here as a CEW station under the control of No 90 Group, parented by RAF Wartling, administratively controlled by No 4 GRSS, Chigwell and functionally controlled by REU. It was transferred to the Metropolitan Sector, No 11 Group on 13 November 1952 and was disbanded on 15 April 1958. A C & M Party was formed on 15 April 1958, which disbanded on 1 June 1958, with responsibility for the site being given to No 919 SU (Wartling), no further details at present.
Beer Head	This station was in the process of formation in March 1941 and had opened by July 1941 under the control of No 78 Wing. It was commissioned in 1942/43 as a CMH (Type 13) station. At the end of 1942 it was engaged on air reporting and stand-by surface watching operating 10cm Mk IV equipment but was due to be upgraded to Mk VI Tower. In October 1945 it was scheduled to be placed in Care & Maintenance (Stage II). The CHL (CDP) and CD No 1 Mk VI stations disbanded on 1 June 1946.
Bembridge	This site, previously known as Culver Cliff, was taken over from the Army and opened in September 1940 in No 60 Group. By January 1941 this was a CHL station as station 10A, and was placed under the control of No 76 Wing on 17 February 1941. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching. It was transferred to No 75 Wing on 1 July 1943 and on 30 November 1943 the CHL equipment was transferred to Boniface Down along with the personnel manning it and the station was transferred to C & M. On 20 April 1944 a Type 41 AMES was added as a Section of the Station and the Type 2 AMES was closed down on 8 January 1945. The CD No 1 Mk V Station was disbanded on 1 June 1946.
Bempton	Work on this CHL station (37A), originally known as Flamborough Head began in January 1940 and it was operating by the middle of February under the control of HQ Fighter Command, parented by RAF Driffield. It was transferred to the newly formed No 60 Group on 23 February 1940 and when No 60 Group was split into Wings on 17 February 1941, it was allocated to No 73 Wing, which took over the parenting responsibilities. At the end of 1942 it was engaged on air reporting and stand-by surface watching operating 10cm Mk IV equipment but was due to be upgraded to Mk VI Tower and had been allocated high power transmitters. The GCI station became a lodger unit on 5 February 1945 and was disbanded on 1 August 1945, the CHL and CHEL (Type 54) station was still operational in October 1945. A Type 31 Station was opened at some point and this closed on 1 November 1945. The CHL and CHEL stations were placed on Care and Maintenance on 15 April 1948. On 1 June 1949 the CHL and CHEL station was returned to operational status in Northern Signals Area. The CH and CHEL stations were redesignated No 146 Signals Unit on 1 November 1951 in No 12 Group. It was transferred to No 13 Group on 15 July 1955, and back to No 12 Group on 1 October 1957.
Ben Hough	This Type 2 station opened between July 1941 and July 1942 under the control of No 72 Wing. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching. It was transferred to No 70 Wing on 1 July 1943. On 7 March 1945 it was placed on Care & Maintenance (Stage II), and disbanded on 31 May 1946.
Benacre	This station opened between July 1942 and July 1943 under the control of No 74 Wing as Covehithe. It was renamed Benacre on ? and was transferred to No 73 Wing on 1 July 1943. In October 1945 it was scheduled to be placed in Care & Maintenance (Stage II), but disbanded on 1 June 1946. In May 1951 it was listed as redundant in Fighter Command, parented by RAF Horsham St Faith, which ended on 24 August 1953 following its derequisitioning.
Bexhill	At the end of 1942 it was in the process of being taken over by the RAF as a Type 12 station. By January 1944 it was under the control of No 75 Wing and closed on 8 November 1944.
Birmingham	This was commissioned in 1942/43 as a Mobile GCI Station (AA), but no other details have so far been found.
Bishops Road	This was formed in about August 1941 as a mobile GCI station (26G) at Downhill, County Derry in No 79 Wing, and by February 1942 was allocated to Eglinton Sector, parented by RAF Eglinton and on 1 February was transferred from No 60 Group to No 82 Group. By May 1942 it had been replaced by Ballydonaghy.
Blackgang	This was opened in late 1942 as a Mobile GCI Station in No 75 Wing but was due to be upgraded to become an Intermediate Mobile station by May 1943. By October 1942 it was allocated to the Tangmere Sector, parented by RAF Tangmere. By January 1944 it was under the control of No 75 Wing and was placed on Care and Maintenance in No 60 Group on 1 August 1945. The GCI station disbanded in No 78 Wing on 1 June 1946.
Blackhead	Originally commissioned as an Inter Service CD/CHL station under War Office control, it was transferred to the Air Ministry on 15 May 1942 and placed in No 60 Group, under the control of No 79 Wing. By the end of 1942, when it was a dual-role station engaged on air reporting and surface watching. It was transferred to No 72 Wing on 1 July 1943 but by 8 January 1944 was no longer requiredand authority was given for it to close.
Blankets Farm	This GCI station opened between May and July 1942 under the control of No 74 Wing and was allocated to the Biggin Hill Sector, parented by RAF Hornchurch. By October 1942 it was a reserve station for RAF Durrington. By January 1943 it was being held in reserve in case other stations became unserviceable due to enemy action. It was transferred to No 75 Wing on 1 July 1943 and probably closed between June 1944 and January 1945.
Boarscroft	In 1941 this was planned to be a mobile GCI station (18G) in No 74 Wing for allocation to the Northolt Sector, and by February 1942 was parented by RAF Halton. It was replaced by East Hill by July 1942.
Bolt Tail	Originally commissioned as an Inter Service CD/CHL station under War Office control, it was transferred to the Air Ministry on 6 April 1942 and placed in No 60 Group, under the control of No 78 Wing. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching. By March 1945 it was a Type 2 station on Care & Maintenance (Stage I). The CD No 1 Mk VI station disbanded on 1 June 1946. On 25 September 1950 it was transferred as an Inactive Station without equipment to RAF Mount Batten, Maintenance Command, until 25 March 1954, following derequisition of the site.
Boniface Down	At the end of 1942 it was being used by controlled interception (Surface). On 30 November 1943 it took over the CHL equipment, personnel and cover responsibility from Bembridge. By January 1944 it was under the control of No 75 Wing and was still operational as a CHL station in October 1945. The CHL station was returned to operational status on 1 June 1949 in Southern Signals Area.
Borve Castle	This station had opened by July 1941 under the control of No 72 Wing. It was transferred to No 70 Wing on 1 July 1943. By October 1945 it was also a CHB station being retained for Flying Control purposes only (Type 8C), and disbanded on 31 May 1946. On 25 September 1950 it was transferred as an Inactive Station without equipment to HQ, No 66 Group, Home Command, which was transferred to No 64 Group on 1 February 1957 but ceased on 1 May 1957 following disposal of all Air Ministry assets.
Brandy Bay	This station opened between July 1941 and July 1942 under the control of No 76 Wing. It was transferred to No 78 Wing on 1 July 1943.
Branscombe	This was opened as RAF Sidmouth in August 1940 in No 60 Group, parented by RAF Exeter, but it name was changed to RAF Branscombe in November 1940. By January 1941 this was 'Advance' CH station 13 but it was planned to be upgraded to CH and had opened by July 1941 under the control of No 78 Wing, which took over the parenting responsibilities. The CH station disbanded on 1 June 1946. In May 1951 it was listed as redundant in Fighter Command, parented by RAF Chivenor, but on 10 December 1951 this was changed to RAF Exminster and then to No 926 SU, RAF Hope Cove on 1 April 1955. It was reduced to inactive status on xx xxx xxxx, parented by HQ No 19 Group, until 5 February 1959 following disposal of all Air Ministry assets.
Brenish	This station was in the process of being formed in April 1941 and had opened by July 1941 under the control of No 70 Wing. By October 1945 it was retained for Flying Control (Type RCH) purposes only, and disbanded on 31 May 1946. On 25 September 1950 it was transferred as an Inactive Station without equipment to HQ, No 66 Group, Home Command, which was transferred to No 64 Group on 1 February 1957 but ceased on 1 May 1957 following disposal of all Air Ministry assets.
Bride	This station opened in July 1940, in No 60 Group, parented by RAF Jurby. By January 1941 this was 'Advance' CH station 62 but it was planned to be upgraded to CH and had opened by July 1941 under the control of No 77 Wing, which took over the parenting responsibilities. It was transferred to No 73 Wing on 15 May 1944 and probably closed between June 1943 and January 1944.
Brighton/White Hawk	This station opened between July 1942 and July 1943 under the control of No 75 Wing. At the end of 1942 it was in the process of being taken over by the RAF as a Type 12 station. It was on Care & Maintenance by June 1944 and probably closed between June 1944 and January 1945.
Bristol	This was commissioned in 1942/43 as a Mobile GCI Station (AA), but no other details have so far been found.
Broad Bay	This station was in the process of being formed in April 1941 and had opened by July 1941 under the control of No 70 Wing. By October 1945 it was retained for Flying Control (Type RCH) purposes only, and disbanded on 31 May 1946.
Bryngwran	This station opened in July 1940, in No 60 Group, parented by RAF Penrhos. It was renamed Nevin in August 1940.
Bulbarrow Down	This station opened between July 1941 and July 1942 under the control of No 76 Wing. It was transferred to No 78 Wing on 1 July 1943. In early 1944, it became the Master Site for a Type 7000 Heavy Mobile Chain (GEE). It was redesignated No 411 Signals Unit on 1 November 1951. It disbanded on 20 January 1958, with the site being reduced to inactive status on 31 January 1958, parented by No 217 SU (Sopley) in No 11 Group from 11 March 1958.
Burifa Hill	This station opened between July 1942 and July 1943 under the control of No 70 Wing, and disbanded on 31 May 1946. On 25 September 1950 it was transferred as an Inactive Station without equipment to HQ, No 66 Group, Home Command, which was transferred to No 64 Group on 1 February 1957 but ceased on 1 May 1957 following disposal of all Air Ministry assets.
Butt of Lewis	The was proposed as a CHB station to be station 85A and may have became Eorodale or Islivig.
Butt of Lewis	The was proposed as a CHL station to be station 85 and may have became Brenish or Broad Bay.
Canewdon	This was used as one of the first five sites chosen in 1936 for the Intermediate Chain as both a transmitting (one 240 ft tower) and receiving station (two 240 ft towers). It was retained as one of sixteen sites Main Chain begun in 1937 as Station 22. Authority for the construction of a Final CH station operating on 27Mc/s was given in March 1939. Originally under the direct control of HQ Fighter Command, it was transferred to the newly formed No 60 Group on 23 February 1940, parented by RAF Hornchurch. By January 1941 an Emergency Alternative MRU was being proposed at Cedars (22M) but it is not known if this was completed at the moment. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 74 Wing, which took over the parenting responsibilities and was transferred to No 75 Wing on 1 July 1943, at which time it was on C & M.. In early 1944, it became the Slave Site for a Type 7000 Heavy Mobile Chain (GEE). A Type 9 Mark IV Station was formed in the existing Type 1 compound on 18 August 1944. The CH Station was disbanded on 1 June 1946. In early 1951, the redundant site was parented by RAF Hornchurch in Technical Training Command.
Capel (-le-Ferne)	This was formed in October 1940 in No 60 Group, parented by RAF Hawkinge but on 21 October 1940 it was renamed RAF Hollingbury. By the end of 1942 it was manned by the Navy, operating 10cm Mk IV equipment but was due to be upgraded to Mk V.
Carn Brae	At the end of 1942 this station was operating 10cm Mk V equipment and had been allocated high power transmitters. By January 1944 it was under the control of No 75 Wing and was still operational as a CHEL (Type 52) station in October 1945. A Type 31 Station was opened at some point and this closed on 1 November 1945. The CD No 1 Mk VI station disbanded on 1 June 1946.
Carnanton	This site opened in about June 1940 under the control of No 60 Group, parented by RAF St Eval but was resited and renamed RAF Trerew in August 1940. A new RAF Carnanton reformed in November 1940 in No 60 Group, parented by RAF St Eval and when No 60 Group was split into Wings on 17 February 1941, it was allocated to No 78 Wing, which took over the parenting responsibilities. It probably closed between December 1941 and June 1942. *Officers Commanding: -* 5 Sep 1940 Flt Lt Barham
Carsaig	This station was in the process of forming in April 1941 and had opened by July 1941 under the control of No 72 Wing. It probably closed between June 1942 and January 1943.
Castell Mawr	This was originally formed in October 1940 in No 60 Group, as RAF Tan-y-Bwlch parented by RAF Aberwstwyth but was renamed on 18 December 1940. By July 1941 under the control of No 76 Wing, which took over the parenting responsibilities and was transferred to No 77 Wing on 1 July 1943 and to No 73 Wing on 15 May 1944. By June 1944 it was on Care & Maintenance and closed down on 25 October 1944.
Castle Rock	This Type 1 station opened in late 1940 under the control of No 60 Group, parented by RAF Aldergrove. It was 'Advance' CH station 59 but was planned to be upgraded to CH and had opened by July 1941 under the control of No 77 Wing, which took over the parenting responsibilities. It was transferred to No 79 Wing on 27 September 1941 and then to No 72 Wing on 1 July 1943. On 7 March 1945 it was placed on Care & Maintenance (Stage II), and disbanded on 31 May 1946. On 29 September 1950 it was transferred as an Inactive Station from Southern Signals Area to the Radio Engineering Unit. The CH station was redesignated No 858 Signals Unit on 1 November 1951 and disbanded on 1 January 1956, the station being placed on C & M. The C & M party was disbanded on 1 October 1956 and the station was reduced to inactive status, parented by RAF Ballykelly, until 1 July 1958 following disposal of all Air Ministry assets.
Chapel Rame	At the end of 1942 it was operating 10cm Mk VI equipment. Type 53 A Type 31 Station was opened at some point and this closed on 1 November 1945. The CD No 1 Mk VI station disbanded on 1 June 1946.
Chew Park	This was formed in December 1940 in No 60 Group, parented by RAF Filton and by July 1941 was under the control of No 76 Wing, which took over the parenting responsibilities. It probably closed between July and December 1941.
Cleadon	This had originally been known as Marsdon, but then renamed Whitburn and then renamed again, as Cleadon. By the end of 1942 it was a CD No 1 Mk V station under the control of No 73 Wing, and was engaged on air reporting and stand-by surface watching, operating 10cm Mk V equipment. On 26 August 1944, the Type 31 AMES was closed leaving the Type 9000 in situ.
Clee Hill	This station opened between July 1941 and July 1942 under the control of No 76 Wing. It was transferred to No 77 Wing on 1 July 1943 and to No 73 Wing on 15 May 1944. The GEE Slave station was redesignated No 92 Signals Unit on 1 November 1951 in No 90 Group, and was disbanded on 20 January 1958, the site being reduced to inactive status, parented by RAF Bridgnorth in No 22 Group.
Clett	Formation of the Type 2 station commenced in late 1941 and it was commissioned during 1942 and opened by July 1942 under the control of No 71 Wing. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching. It was transferred to No 70 Wing on 1 July 1943, and disbanded on 31 May 1946. In May 1951 it was listed as redundant in No 90 Group, parented by No 1 GRSS, Grangemouth, but from 1 December 1953 this was transferred to RAF Bishopbriggs, which ceased on 8 November 1954 following derequisition of the station.
Cockburnspath	This opened as a CHL station (42A) on 26 January 1940 originally under the direct control of HQ Fighter Command, it was transferred to the newly formed No 60 Group on 23 February 1940, parented by RAF Drem. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 72 Wing, which took over the parenting responsibilities and was transferred to No 70 Wing on 15 May 1944 and was still operational as a CHL (Type 2 and Type 50) station in October 1945, it disbanded on 31 May 1946. On 29 September 1950 it was transferred as an Inactive Station from No 90 Group to Fighter Command which was relieved of this responsibility on 23 June 1952 following the station's derequisition.
Cocklaw	This was formed in December 1940 in No 60 Group, parented by RAF Dyce. By January 1941 this was under construction as a CHL station as station 47B and was opened by July 1941 under the control of No 71 Wing, which took over the parenting responsibilities. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching as well as being a part-time GCI station. IIt was transferred to No 70 Wing on 1 July 1943 and was still operational as a CHL (Type 2) station in October 1945, and disbanded on 31 May 1946. On 29 September 1950 it was transferred as an Inactive Station from No 90 Group to Fighter Command.
Coleraine	As of May 1942 this is shown in SD155 as a GCI station in No 79 Wing allocated to the Eglinton Sector, parented by RAF Eglinton. By 1 July 1943 it was on Care and Maintenance in the Ballyhalbert Sector in No 72 Wing.
Comberton	This station GCI (11G)was in the process of formation in March 1941, however, on 14 April it ceased to be a separate unit being taken onto the establishment of the Baginton Sector. By February 1942 it had been transferred to the Honiley Sector in No 76 Wing, parented by RAF Pershore. By October 1942 it had been transferred to No 77 Wing on on 8 May 1943 its parenting was taken over by RAF Defford.. It was initially a Transportable GCI station but was intended to become an Intermediate Transportable and then a Final station, which was due to be achieved by the end of May 1943. It was transferred to the Honiley Sector in No 77 Wing by 1 July 1943 and to No 73 Wing on 15 May 1944. The GCI station ceased operations on 18 August 1944 and by January 1945 it was a Type 7 station on Care & Maintenance (Stage I). The GCI station disbanded on 1 June 1946. However, at some point it was re-opened in No 90 Group but on 1 July 1949 was transferred to Fighter Command under the operational control of No 12 Group but parented by RAF Pershore (No 62 Group). The GCI station was redesignated No 909 Signals Unit on 1 November 1951, which disbanded on 15 February 1956, with a C & M party being established at RAF Comberton in No 11 Group. The C & M Party was disbanded on 1 February 1957 and the station was reduced to inactive status in No 12 Group, parented by RAF Honiley. On 28 February 1958, parenting was transferred to RAF Wellesbourne Mountford in No 41 Group.
Compass Head	This is shown as in one document but as no further mention as been found, it may have been renamed.
Covehithe	An opening date for this station has not found but by the end of 1942 it was operating 10cm Mk VI equipment on a 200ft tower and had been allocated high power transmitters. It was renamed Benacre on ?
Crannock Hill	Originally commissioned as an Inter Service CD/CHL station under War Office control, it was transferred to the Air Ministry on 10 May 1942 and placed in No 60 Group, under the control of No 71 Wing. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching and had been allocated 10cm Mk V equipment. It was transferred to No 70 Wing on 1 July 1943. The Type 31 (CD No 1, Mk 1) station was closed on 1 January 1944, and the Type 2 station was disbanded on 31 May 1946.
Craster	At the end of 1942 it was engaged on surface watching only, it had also been allocated 10cm Mk IV/V equipment. By January 1944 it was under the control of No 73 Wing and probably closed between June 1944 and January 1945.
Creignish	This station opened in July 1940, in No 60 Group, parented by RAF Jurby. By January 1941 this was a CHL station as station 63A and had opened by July 1941 under the control of No 77 Wing, which took over the parenting responsibilities. It was commissioned in 1942/43 as a CD No 1 Mk V station. Type 52. At the end of 1942 it was engaged on air reporting and stand-by surface watching, it had also been allocated 10cm Mk IV/V equipment and had been allocated high power transmitters. It was transferred to No 77 Wing on 1 July 1943 and to No 73 Wing on 15 May 1944. On 7 March 1945 the Type 2 CHL station was placed on Care and Maintenance. A Type 31 Station was opened at some point and this closed on 1 November 1945. The CHL station and the Type CD No 1 Station were disbanded on 1 June 1946.
Cresswell	Work on this CHL station (40A) began in January 1940 as part of the second 'crash' programme and was operational by the end of February. It was originally under the direct control of HQ Fighter Command, it was transferred to the newly formed No 60 Group on 23 February 1940, parented by RAF Usworth. Type 56. By January 1941 this was a CHL station and was commissioned during 1942/43 as both a CHL (Tower) station and a CD No 1 Mk V station. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 73 Wing, which took over the parenting responsibilities. At the end of 1942 it was engaged on air reporting and stand-by surface watching, operating 10cm Mk V equipment. It was still operational as a CHL and CHEL (Type 56) station in October 1945, but disbanded on 1 June 1946. On 25 September 1950 it was transferred as an Inactive Station without equipment to RAF Acklington, Fighter Command.
Cricklade	This CGI station (31G) had opened by the end of October 1941 in No 76 Wing, allocated to the Colerne Sector, replacing that at Avebury, which was dismantled. By February 1942 it had been transferred to the Middle Wallop Sector, parented by RAF South Cerney. It was initially intended as a Mobile station but was intended to become an Intermediate Mobile and then a Final station. By January 1943 it was still an Intermediate Mobile station and was transferred to the Colerne Sector in No 78 Wing by 1 July 1943 and was closed on 3 August 1944 but on 1 December 1944 this instruction was cancelled and the site transferred to Transport Command.
Cromarty	This station opened in July 1940, parented by RAF Evanton and by January 1941 was a CHL station known as station 48A. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 70 Wing, which took over the parenting responsibilities. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching. It was placed on Care and Maintenance on 1 March 1944 and probably closed between May and June 1944.
Crossmaglen	This was commissioned in 1942 as a Mobile Radar Unit and had opened by July 1942 under the control of No 79 Wing. It was transferred to No 72 Wing on 1 July 1943. By March 1945 it was a Type 9 (T) station on Care & Maintenance (Stage III) and RAF Crossmaglen was closed on 1 July 1945.
Crustan	This was formed in December 1940 in No 60 Group, parented by RAF Kirkwall. By January 1941 this was under construction as a CHL station as Station 72 and was opened by July 1941 under the control of No 70 Wing, which took over the parenting responsibilities. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching. It was still operational as a CHL (Type 2) station in October 1945, and disbanded on 31 May 1946. On 25 September 1950 it was transferred as an Inactive Station without equipment to HQ, No 66 Group, Home Command, which was transferred to No 64 Group on 1 February 1957 but ceased on 1 May 1957 following disposal of all Air Ministry assets.
Dalby	By January 1941 the layout of this station as a CH station (79) had been decided and had opened by July 1941 under the control of No 77 Wing. It was transferred to No 73 Wing on 15 May 1944. By June 1944 it was a Type 1 station on Care & Maintenance (Stage II), but disbanded on 1 June 1946. In May 1951 it was listed as redundant in Flying Training Command, parented by RAF Jurby.
Danby Beacon	This was used as one of the first sixteen sites selected for the Main Chain begun in 1937 as Station 38. Authority for the construction of a Final CH station operating on 22.69Mc/s was given in March 1939. Originally under the direct control of HQ Fighter Command, it was transferred to the newly formed No 60 Group on 23 February 1940, parented by RAF Thornaby. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 73 Wing, which took over the parenting responsibilities. During 1942/43 it was commissioned as part of the Buried Reserve, and disbanded on 1 June 1946. On 18 September 1950 it was transferred as an Inactive Station from Southern Signals Area to the Radio Engineering Unit. It was placed on Care and Maintenance as a 'Rotor' site on 12 December 1950 and was transferred from No 90 Group to No 12 Group, Fighter Command on 9 July 1951, parented by RAF Leeming. The CH station was redesignated No 573 Signals Unit on 1 November 1951, disbanding on 1 July 1956, with a C & M party being formed the same day. The C & M party was disbanded on 1 April 1958 and the station reduced to inactive status, parented by No 39 SU (Goldsborough)
Daventry	This station was possibly the BBC transmitter site and was probably taken over between June 1944 and January 1945 under the control of No 73 Wing but no other details have been found so far. The GEE Master station was redesignated No 699 Signals Unit on 1 November 1951.
Deerness	This station was formed by renaming RAF Gaitnip in August 1940 in No 60 Group, parented by No 950 Squadron at Lyness. On 10 October 1940 parenting responsibilities were transferred to RAF Kirkwall. By January 1941 this was a CHL (Type 2) station as station 50A and was opened by July 1941 under the control of No 70 Wing, which took over the parenting responsibilities. It was commissioned in 1942/43 as a CMH (Type 13) station. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching. It was still operational as a CHL and CHEL (Type 51) station in October 1945, and disbanded (Type 51 and Type 7) on 31 May 1946. On 25 September 1950 it was transferred as an Inactive Station without equipment to HQ, No 66 Group, Home Command, which was transferred to No 64 Group on 1 February 1957 but ceased on 1 May 1957 following disposal of all Air Ministry assets.
Dengie	At the end of 1942 it was operating 10cm Mk VI equipment on a 200ft tower. By January 1944 it was under the control of No 75 Wing. The CD No 1 Station was disbanded on 1 June 1946. On 1 December 1947 it was non-operational with a Type 54 (abandoned) and was transferred from Southern Signals Area to Northern Signals Area. In May 1951 it was listed as redundant in Technical Training Command, parented by RAF Hornchurch.
Dimlington	At the end of 1942 it was operating 10cm Mk IV equipment but was due to be upgraded to Mk VI Tower and had been allocated high power transmitters. By January 1944 it was under the control of No 73 Wing and the GCI station became a lodger unit on 5 February 1945 The GCI station was disbanded on 1 August 1945 and it was still operational as a CHEL (Type 54) station in October 1945. A Type 41 Station was opened at some point and this closed on 1 November 1945. The Type CD No 1 Station was disbanded on 1 June 1946. The CHEL station was returned to operational status on 1 June 1949 in Northern Signals Area. On 1 May 1950, its name was changed to Easington.
Dirleton/Macmerry	This station (16G) had opened in late 1941/early 1942 under the control of No 72 Wing, being administered by the Drem Sector. By February 1942 it had been transferred to the Turnhouse Sector, parented by RAF Drem. Initially it was a Mobile station but was intended to become an Intermediate Mobile and then a Final station, which was due to be achieved by mid-June 1943. It was transferred to No 70 Wing on 15 May 1944. In October 1945 this station was operational as a Type 7 and Type 51 GCI station. It was transferred to No 90 Group on 20 May 1946, and disbanded on 31 May 1946, but was transferred to Reserve Command on 1 February 1950. It was transferred, yet again, on 15 June 1950 to No 12 Group, Fighter Command and was renamed RAF Macmerry on 1 September 1951. The GCI station was redesignated No 980 Signals Unit on 1 November 1951 and disbanded on 1 August 1954.
Doctor's Corner	This GCI station opened between May and July 1942 under the control of No 75 Wing and was allocated to the Kenley Sector, parented by RAF Kenley. By October 1942 it was a reserve station for RAF Willesborough. By January 1943 it was being held in reserve in case other stations became unserviceable due to enemy action. It probably closed between June 1944 and January 1945.
Donna Nook	An opening date for this station has not found but by the end of 1942 it was engaged on surface watching only.
Doonies Hill	Work on this CHL station (46A) began in January 1940 as part of the second 'crash' programme and was operational by the end of February. It was originally under the direct control of HQ Fighter Command, it was transferred to the newly formed No 60 Group on 23 February 1940, parented by RAF Dyce. By January 1941 it was commissioned during 1942 as a duplicate CHL station. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 71 Wing, which took over the parenting responsibilities. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching and had been allocated 10cm Mk V equipment. It was transferred to No 70 Wing on 1 July 1943. On 26 August 1944, the Type 31 AMES was closed leaving the Type 2 in situ and in October 1945 it was scheduled to be placed in Care & Maintenance (Stage II), and disbanded on 31 May 1946. On 25 September 1950 it was transferred as an Inactive Station without equipment to HQ, No 66 Group, Home Command, which was transferred to No 64 Group on 1 February 1957 but ceased on 1 May 1957 following disposal of all Air Ministry assets.
Douglas Wood	Authority for the construction of a Final CH (Type 1) station (45) operating on 22.69Mc/s was given in March 1939. Originally under the direct control of HQ Fighter Command, it was transferred to the newly formed No 60 Group on 23 February 1940, parented by RAF Montrose. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 71 Wing, which took over the parenting responsibilities. During 1942/43 it was commissioned as part of the Buried Reserve. It transferred to No 72 Wing on 1 July 1943 and was still operational as a CHEL (Type 55) station in October 1945, and disbanded on 31 May 1946. On 28 September 1950 it was transferred as an Inactive Station from Southern Signals Area to the Radio Engineering Unit. It was placed on Care and Maintenance as a 'Rotor' site on 12 December 1950 and was transferred from No 90 Group to No 12 Group, Fighter Command on 3 September 1951, parented by RAF Leuchars. The CH station was redesignated No 51 Signals Unit on 1 November 1951. The C & M party was disbanded on 15 January 1957. On the same date the station was reduced to inactive status in No 13 Group, parented by No 351 SU (Anstruther), RAF Anstruther.
Dover	See RAF Swingate
Dover Hill	This station opened between July 1941 and July 1942 under the control of No 75 Wing. It probably close between June 1943 and January 1944.
Downderry	This station opened in late 1940 under the control of No 60 Group, parented by RAF Mount Batten. By January 1941 this was 'Advance' CH station 15 and had opened by July 1941 under the control of No 78 Wing, which took over the parenting responsibilities. It was planned to be upgraded to CH, the upgrade being completed 1942/43. By October 1945 it was also a CHEL station and was scheduled to be placed in Care & Maintenance (Stage II). The CH station disbanded on 1 June 1946. In May 1951 it was listed as redundant in No 43 Group, Maintenance Command, parented by RAF Mount Batten. Parenting was transferred to HQ (Unit), No 19 Group, RAF Mount Batten on 17 October, until 17 March 1959 following disposal of all Air Ministry assets.
Downhill	This station opened in late 1940 under the control of No 60 Group, parented by RAF Aldergrove. By January 1941 this was a CHL (Type 2) station as station 59A and had opened by July 1941 under the control of No 77 Wing, which took over the parenting responsibilities. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching and had been allocated 10cm Mk V equipment and high power transmitters. It was transferred to No 79 Wing on 27 September 1941 and then to No 72 Wing on 1 July 1943. A Type 31 Station was opened at some point and this closed on 1 November 1945, and the Type 2 and 52 stations disbanded on 31 May 1946.
Drone Hill	Chosen as a possible Main Chain site it was selected in 1938 for a mobile CH installation in order to provide RDF coverage of the Forth-Clyde area. Authority for the construction of a Final CH (Type 1) station operating on 50.5Mc/s was given in March 1939. However, its temporary masts were dismantled in April/May 1939 and moved to Rosyth, for transfer to Netherbutton to cover Scapa Flow. Administration of this unit was transferred from RAF Turnhouse to No 13 FTS at Drem on 27 May 1939. By January 1941 this was a CH station as station 42, coming under the control of No 72 Wing the following month. During 1942/43 it was commissioned as part of the Buried Reserve. It was transferred to No 70 Wing on 15 May 1944. In October 1945 it was scheduled to be placed in Care & Maintenance (Stage II), and disbanded on 31 May 1946. On 28 September 1950 it was transferred as an Inactive Station from Southern Signals Area to the Radio Engineering Unit. It was placed on Care and Maintenance as a 'Rotor' site on 12 December 1950 and was transferred from No 90 Group to No 12 Group, Fighter Command on 9 July 1951, parented by RAF Macmerry. The CH station was redesignated No 633 Signals Unit on 1 November 1951, disbanding on 1 July 1956, with a C & M party being formed the same day. On 1 October 1956 the C & M party was disbanded with the station being reduced to inactive status, parented by No 617 SU (Crosslaw) in No 13 Group.
Drytree	This was opened as RAF Goonhilly Down on 1 June 1940, parented by RAF St Eval, under the control of No 60 Group, but on 19 June its name was changed to RAF Dry Tree. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 78 Wing, which took over the parenting responsibilities. In October 1945 it was a CH station scheduled to be placed in Care & Maintenance (Stage II), which disbanded on 1 June 1946. On 29 September 1950 it was transferred as an Inactive Station from Southern Signals Area to Radio Navigation Aids Wing. It was placed on Care and Maintenance as a 'Rotor' site on 12 December 1950. The CH station was redesignated No 185 Signals Unit on 1 November 1951. It was transferred No 11 Group, Fighter Command on 11 June 1952 and disbanded on 1 April 1955, the site becoming a satellite of No 644 SU (Treleaver), until 19 January 1959 following disposal of all Air Ministry assets.. Officers Commanding: - 24 Oct 1940 Plt Off A K Webb
Dunderhole Point	At the end of 1942 it was engaged on surface watching only and had been allocated 10cm Mk IV/V equipment. By January 1944 it was under the control of No 78 Wing and on 23 July 1944 the Type CD/CHL Station was closed and by March 1945 it was a Type 16 station on Care & Maintenance (Stage I).
Dunkirk	This was one of the first five sites chosen in 1936 for the Intermediate Chain as a transmitting station with a single tower. It was retained as one of sixteen sites Main Chain begun in 1937 as Station 02. Authority for the construction of a Final CH station operating on 22.69Mc/s was given in March 1939. Originally under the direct control of HQ Fighter Command, it was transferred to the newly formed No 60 Group on 23 February 1940, parented by RAF Manston. By January 1941 operated an Emergency Alternative MRU at Cutballs (02M). On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 75 Wing, which took over the parenting responsibilities. The CH Station and CD No 1 Station were disbanded on 1 June 1946. On 25 August 1950 the Control & Reporting station was on C & M and was transferred from No 90 Group to Fighter Command, parented by RAF West Malling via Swingate. The CH station was redesignated No 749 Signals Unit on 1 November 1951 and disbanded on 1 January 1956, the station being placed on C & M in No 11 Group. The C & M party was disbanded on 15 May 1957 and the station reduced to inactive status, parented by No 491 SU, RAF Sandwich.
Dunnet Head	By January 1941 this was a CHL (Type 2) station as station 49B operated by the Navy and does not appear in SD161 until around January 1944 under the control of 70 Wing. At the end of 1942 it was engaged on air reporting and stand-by surface watching, manned by the Navy and was operational with 10cm Mk III equipment. It was transferred to No 75 Wing on 1 July 1943 and on 1 July 1944 a Type 57 CHEL Station opened on the site, which was still operational in October 1945 by which time the station was also carrying out technical training, and the Type 2 and 30 stations were disbanded on 31 May 1946. On 25 September 1950 it was transferred as an Inactive Station without equipment to HQ, No 66 Group, Home Command, which was transferred to No 64 Group on 1 February 1957 but ceased on 1 May 1957 following disposal of all Air Ministry assets.
Dunragit	This was commissioned in early 1942 as a Mobile GCI Station (34G) and opened by July 1942 under the control of No 72 Wing. Allocated to the Ayr Sector, by February 1942 it was parented by RAF West Freugh, but by May, parenting responsibilities had been transferred to RAF Castle Kennedy. By January 1943 was on Care & Maintenance and by 1 July 1943 was in No 72 Wing, being transferred to No 70 Wing on 15 May 1944. It was closed down on 1 July 1944.
Dunwich	This opened as a CHL station (28A) on 1 January 1940 originally under the direct control of HQ Fighter Command, it was transferred to the newly formed No 60 Group on 23 February 1940, parented by RAF Honington. Parenting responsibilities were transferred to RAF Martlesham Heath on 22 June 1940. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 74 Wing, which took over the parenting responsibilities. During 1942/43 it was commissioned as a Tower station. At the end of 1942 it was engaged on air reporting and stand-by surface watching. It was transferred to No 75 Wing on 1 July 1943. In October 1945 it was scheduled to be placed in Care & Maintenance (Stage II). The CHL Station was disbanded on 1 June 1946. On 1 December 1947 it was non-operational with a Type 2 (abandoned) and was transferred from Southern Signals Area to Northern Signals Area. In May 1951 it was listed as redundant in Maintenance Command, parented by RAF Honington, which ceased on 27 May 1954.
Duriston	An opening date for this station has not found but by the end of 1942 it had been declared redundant.
Durrington	This GCI station (01G) commenced formation in late 1940 in No 60 Group, parented by RAF Tangmere. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 75 Wing, which took over the parenting responsibilities, however, on 14 April it ceased to be a separate unit being taken onto the establishment of the Tangmere Sector. By February 1942 it was parented by RAF Ford, but in May parenting responsibility was transferred to RAF Tangmere and by October had reverted to RAF Ford. It was initially a Mobile station but intended to become an Intermediate Mobile and then a Final station, which it had become by January 1943. It was transferred to No 75 Wing on 1 July 1943 and on 5 February 1945 the GCI station was reduced to intermediate/final status. At some point it was transferred to the control of HQ Fighter Command, and reverted to No 60 Group on 3 December 1945. The GCI station disbanded in No 78 Wing on 1 June 1946.
Dymchurch/Newchurch	This was formed in December 1940 in No 60 Group, parented by RAF Hawkinge, having originally been called Newchurch. In January 1941 construction was underway as station 73 as an Intermediate CH station but the name was later changed (between June 1943 and January 1944) to avoid confusion with the nearby airfield of the same name. This station opened between July 1941 and July 1942 under the control of No 75 Wing, which took over the parenting responsibilities. The CH Station was disbanded on 1 June 1946. In May 1951 it was listed as redundant in Fighter Command, parented by RAF West Malling, which ended on 27 November 1953 following its derequisitioning.
Easdale	By January 1941 this was proposed as a CHL station as station 80A, but no other details have so far been found.
Easington	This opened as a CHL station (35A) on 19 December 1939 originally under the direct control of HQ Fighter Command, it was transferred to the newly formed No 60 Group on 23 February 1940, parented by RAF Catfoss. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 73 Wing, which took over the parenting responsibilities. At the end of 1942 it was engaged on air reporting and stand-by surface watching as well as being a part-time GCI station, and was closed on 3 August 1944. It was reformed in No 12 Group on 1 May 1950 by renaming the CHEL station at Dimlington. The CHEL station was redesignated No 545 Signals Unit on 1 November 1951. On 20 March 1954 the station was transferred to No 21 Group on an inactive (surplus) basis, parented by RAF Leconfield. No 545 SU disbanded on 9 May 1954. Parenting was transferred to RAF Patrington on 20 April 1954, until 21 February 1959 following disposal of all Air Ministry assets.
Eastcliffe	An opening date for this CD/CHL station has not found but by the end of 1942 it had been declared redundant, but it was 18 February 1944 before orders were issued for it to closed and disposed of.
East Hill	This GCI station opened between February and July 1942 under the control of No 74 Wing, replacing Boarscroft, and was allocated to the Northolt Sector, parented by RAF Halton. By January 1943 it was an Intermediate Mobile station and was transferred to No 75 Wing on 1 July 1943. By October 1945 this was a GCI station due to be placed on Care & Maintenance (Stage II) and on 25 February 1946 was transferred to No 60 Group. The GCI station disbanded in No 78 Wing on 1 June 1946. The Type 21 Station was transferred on temporary loan to the Meteorological Office on 1 October 1946.
Eorodale	By February 1941 formation of this station (85A) was underway and it had opened by July 1941 under the control of No 70 Wing. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching and had been allocated 10cm Mk IV/V equipment and high power transmitters. The Type 31 Station was closed down on 11 January 1945 and by October 1945 it was retained for Flying Control purposes only, and the Type 2 station disbanded on 31 May 1946. On 25 September 1950 it was transferred as an Inactive Station without equipment to HQ, No 66 Group, Home Command, which was transferred to No 64 Group on 1 February 1957 but ceased on 1 May 1957 following disposal of all Air Ministry assets.
Etton	This station commenced formation in late 1940 in No 60 Group, parented by RAF Wittering, but by January 1941 had been resited to Martlesham and was renamed RAF Waldringfield.
Exminster	This GCI station (03G) was in the process of formation in March 1941 and had opened by July 1941 under the control of No 78 Wing, however, on 14 April it ceased to be a separate unit being taken onto the establishment of the Exeter Sector, parented by RAF Exeter. It was initially a Mobile station but intended to become an Intermediate Mobile and then a Final station. However, by January 1943 it was still a mobile unit but was due to be upgraded to Final standard by the end of January. On 1 February 1945 the GCI station was transferred from Fighter Command to No 60 Group on Care & Maintenance (Stage I). The GCI station disbanded on 1 June 1946, but was transferred from No 90 Group to Reserve Command on 1 February 1950. On 1 February 1951 it was transferred to Southern Sector, No 11 Group, Fighter Command. The GCI station was redesignated No 690 Signals Unit on 1 November 1951 and was placed on C & M on 15 December 1954. The C & M party was disbanded on the station being reduced to inactive status on 1 April 1955, parented by No 926 SU, RAF Hope Cove, until 1 April 1959 following disposal of all Air Ministry assets.
Fair Isle, Fair Isle North and Fair Isle South	By January 1941 these were CHL (Type 2) stations 53A (North) and 53B (South) operated by the Navy and does not appear in SD161 until around January 1944 under the control of 70 Wing. At the end of 1942 they were both dual-role stations engaged on air reporting and surface watching, manned by the Navy, both also having been allocated 10cm Mk III equipment. Fair Isle II & III was still operational as a CHL station in October 1945 with Fair Isle III also being a CHEL (Type 50) station. It was transferred from the Admiralty to No 60 Group on 10 December 1945, and disbanded on 31 May 1946.
Fairlight	It opened as a CHL station (05A) in about June 1940 under the control of No 60 Group, parented by RAF Hawkinge. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 75 Wing, which took over the parenting responsibilities. It was commissioned in 1942/43 as a CMH (Type 13) station. At the end of 1942 it was engaged on air reporting, was available as a stand-by surface watching station and was operational with 10cm Mk IV equipment but was due to be upgraded to Mk V and had been allocated high power transmitters. It was transferred to No 75 Wing on 1 July 1943 and on 20 July 1944 a Type 13 Mk II commenced forming. On 26 October 1944, a re-organisation took place, with the Interception station closing and the formation of an Experimental Interception Control Unit a a lodger unit on the Type 2 site. At the same time a Type 26 station was formed, also on the Type 2 site, which was transferred to Greyfriars on 31 October 1944. The Type 24 station was transferred from HQ Fighter Command to No 60 Group on 24 November 1944. It was still operational as a CHL and CHEL (Type 52) station in October 1945. A Type 31 Station was opened at some point and this closed on 1 November 1945. The Type 24 station was disbanded on 1 June 1946. The CHL and CHEL station was returned to operational status on 1 June 1949 in Southern Signals Area. The CH (+ CMH) and CHEL stations were redesignated No 229 Signals Unit on 1 November 1951, which disbanded on 1 October 1958, the station being placed on C & M. The C & M party was disbanded on 1 February 1959 and the station reduced to inactive status, parented by RAF Wartling in No 11 Group. Officers Commanding: - 12 Aug 1940 Plt Off W F Lloyd
Flamborough Head	See RAF Bempton
Flat Point	This station probably opened between July 1943 and January 1944 under the control of No 78 Wing but no other details have been found so far.
Floors Beacon	An opening date for this station has not found but by the end of 1942 it had been declared redundant.
Folly	Formation of this station had begun in April 1941 and it had opened by July 1941 under the control of No 76 Wing. It was transferred to No 78 Wing on 1 July 1943. On 1 June 1944 the CH (Type 1) station was placed on Care & Maintenance (Stage I), although the Type 7000 equipment remained in operation. The CH station disbanded on 1 June 1946. On 1 December 1947 it was operating with Types 7523 and 1 (abandonded) and was transferred from Northern Signals Area to Southern Signals Area. On 29 September 1950 it was transferred as an Inactive Station from Southern Signals Area to Radio Navigation Aids Wing. It was placed on Care and Maintenance as a 'Rotor' site on 12 December 1950. The GEE slave station was redesignated No 561 Signals Unit on 1 November 1951. The CH station was redesignated No 508 Signals Unit on 1 November 1951 and disbanded on 15 July 1956, a Closing Down Party, being formed at RAF Folly the same day. It was transferred from No 11 Group to No 90 Group on 13 November 1956, the Closing Down Party being disbanded the same day. No 561 SU (Folly) disbanded on 1 May 1958 with its site being reduced to inactive status, parented by RAF Pembroke Dock. Parenting was transferred to RAF Aberporth in No 12 Group on 1 January 1959.
Foreness 1 & 2	This opened as a CHL station (03) on 7 December 1939 originally under the direct control of HQ Fighter Command, it was transferred to the newly formed No 60 Group on 23 February 1940, parented by RAF Manston. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 74 Wing, which took over the parenting responsibilities. Also Type 13. By January 1941 there were two CHL stations 03A (1) and 03B (2) with 03A being held in reserve. It was commissioned in 1942/43 as a Type 271(10cm) station. At the end of 1942 it was a full time interception station and was operational with 10cm Mk IV equipment but was due to be upgraded to Mk V. On 8 February 1943 kit became a GCI station and was transferred from HQ, No 60 Group to HQ, Fighter Command, being placed in the Biggin Hill sector, parented by RAF Manston. It was transferred to No 75 Wing on 1 July 1943. The CHL Station, GCI and Type 13 Mk II station were all disbanded on 1 June 1946. On 15 August 1950 it was transferred as an Inactive Station without equipment to RAF Sandwich, Fighter Command. No 993 Signals Unit was formed here on 14 March 1952 in No 90 Group, being transferred to No 11 Group on 20 December 1955 and disbanded on 1 October 1958, following which the station was placed on C & M.
Formby	This station was forming in November 1940 in No 60 Group, parented by RAF Speke and by January 1941 this was still under construction as a CHL station as station 64A. It had opened by July 1941 under the control of No 77 Wing, which took over the parenting responsibilities. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching. It was transferred to No 77 Wing on 1 July 1943 and in January 1944 instructions were issued to close the station but in March 1944 the station was transferred to the Admiralty, without the technical equipment.
Forth	This was commissioned in 1942/43 as a Mobile GCI Station (AA), but no other details have so far been found.
Foulness	This station (30G) opened as mobile GCI station in late 1941/early 1942 under the control of No 74 Wing and administered by the Hornchurch Sector. By February 1942 it was still allocated to the Hornchurch Sector, now in No 76 Wing, and was parented by RAF Southend. By May 1942 it had been transferred to the North Weald Sector but was still parented by RAF Southend. By January 1943 it was an Intermediate Mobile station and was due to be placed on Care & Maintenance, when the station at Sandwich became operational. It was transferred to No 75 Wing on 1 July 1943 and was closed down on 1 July 1944.
Fullarton (Heath)	This station (15G) had opened under the name St Quivox as a Mobile GCI station but when commissioned as a Intermediate Mobile GCI Station, under the control of No 72 Wing, its name was changed to Fullerton Heath. By February 1942 it was allocated to the Ayr Sector, parented by RAF Ayr. By January 1943 it was still an Intermediate Mobile station and had been transferred to the Turnhouse Sector by 1 July 1943 and then to No 70 Wing on 15 May 1944, and was closed on 3 August 1944 and was probably transferred to te Admiralty. It was transferred back to No 60 Group on 31 January 1946 and disbanded on 22 February 1946. On 29 September 1950 it was transferred as an Inactive Station from No 90 Group to Fighter Command.
Gaitnip	This opened by July 1940 under the control of No 60 Group but was resited in August and renamed RAF Deerness.
Gibbett Hill	This station opened between July 1941 and July 1942 under the control of No 75 Wing. The GEE Slave station was redesignated No 796 Signals Unit on 1 November 1951.
Gin Head	An opening date for this station has not found but by the end of 1942 it had been declared redundant.
Glenarm	This had opened in about June as a CHL station (60A) under the control of No 60 Group, parented by RAF Aldergrove. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 77 Wing, which took over the parenting responsibilities. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching and had been allocated 10cm Mk IV/V equipment. It was transferred to No 79 Wing on 27 September 1941 and then to No 72 Wing on 1 July 1943. By March 1945 it was a Type 2 station on Care & Maintenance (Stage I), and disbanded on 31 May 1946. A Type 31 Station was opened at some point and this closed on 1 November 1945. On 25 September 1950 it was transferred as an Inactive Station without equipment to HQ, No 67 Group, Home Command. Parenting by No 67 Group ceased on 27 November 1952.
Goldsborough	Originally commissioned as an Inter Service CD/CHL station under War Office control, it was transferred to the Air Ministry on 4 March 1942 and placed in No 60 Group, under the control of No 73 Wing. Type 13, Type 52 and Type 57. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching as well as being a part-time GCI station. The GCI station became a lodger unit on 5 February 1945 and was disbanded on 1 August 1945. It was still operational as a CHL and CHEL (Type 52) station in October 1945, but disbanded on 1 June 1946. The Type CN No 1 Station was disbanded on 1 June 1946. On 29 September 1950 it was transferred as an Inactive Station from No 90 Group to Fighter Command. From 15 June 1952 to 15 July 1958, No 39 SU (Goldborough) was located here but on its disbandment the station was placed in C & M.
Goonhilly Down	See RAF Dry Tree
Grangewood	This station probably opened between July 1943 and January 1944 under the control of No 78 Wing. The Type 100 station was disbanded on 1 June 1946.
Great Bromley	This was one of the first five sites chosen in 1936 for the Intermediate Chain as a transmitting station with a single tower. It was retained as one of sixteen sites Main Chain begun in 1937 as Station 24. The station was completed and calibrated by July 1938 and ready for operation following the decision to convert it to both a transmitting and receiving station. Authority for the construction of a Final CH station operating on 50.5Mc/s was given in March 1939. Originally under the direct control of HQ Fighter Command, it was transferred to the newly formed No 60 Group on 23 February 1940, parented by RAF North Weald. By January 1941 it was proposed to have an Emergency Alternative MRU to be located at Frating (24M). On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 74 Wing, which took over the parenting responsibilities. During 1942/43 it was commissioned as part of the Buried Reserve. It was transferred to No 75 Wing on 1 July 1943. The CH Station and CD No 1 Stations were disbanded on 1 June 1946. On 1 December 1947 it was non-operational with Types 1, 55 and BR (C & M) and was transferred from Southern Signals Area to Northern Signals Area. In May 1951 it was listed as redundant in Fighter Command, parented by RAF Felixstowe.
Great Orme's Head	By February 1941, formation of this station was underway and it had opened by July 1941 under the control of No 77 Wing. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching and had been allocated 10cm Mk IV/V equipment. It was transferred to No 77 Wing on 1 July 1943 and to No 73 Wing on 15 May 1944. On 7 March 1945 it was placed on Care & Maintenance (Stage II). A Type 41 Station was opened at some point and this closed on 1 November 1945. The station was disbanded on 1 June 1946.
Greian Head	This station was in the process of forming in April 1941 and had opened by July 1941 under the control of No 72 Wing. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching. It was transferred to No 70 Wing on 1 July 1943. On 7 March 1945 it was placed on Care & Maintenance (Stage I), and disbanded (Type 2) on 31 May 1946. On 25 September 1950 it was transferred as an Inactive Station without equipment to HQ, No 66 Group, Home Command, which was transferred to No 64 Group on 1 February 1957 but ceased on 1 May 1957 following disposal of all Air Ministry assets.
Greyfriars	In early 1943 a Type 16 AME Station under the operational control of No 12 Group had been sited here, administered by No 74 Wing. On 1 May 1944 it was transferred to VIII Fighter Command, USAAF as Station 373, operating: - Microwave Early Warning Equipment made available from US sources operated and maintained by USAAF personnel Type 24 Equipment, operated and maintained by RAF personnel. It was returned to Fighter Command on 1 November 1944, and then to No 60 Group on 15 September 1945. The GCI station disbanded in No 78 Wing on 1 June 1946. On 1 December 1947 it was non-operational with Types 26 and 24 (abandoned) and was transferred from Southern Signals Area to Northern Signals Area.
Greystone	This was originally formed in December 1940 as RAF Kirkistown Castle and by January 1941 it was CH station 61 but by July 1941 it had be resited and renamed RAF Greystone under the control of No 77 Wing. It was transferred to No 79 Wing on 27 September 1941 and then to No 72 Wing on 1 July 1943. By March 1945 it was a Type 1 station on Care & Maintenance (Stage II), and disbanded on 31 May 1946. In May 1951 it was listed as redundant in Coastal Command, parented by RAF Aldergrove.
Grimston Hall	An opening date for this station has not found but by the end of 1942 it had been declared redundant.
Grutness	By January 1941 this was a CHL (Type 2) station as station 56A operated by the Navy and does not appear in SD161 until around January 1944 under the control of 70 Wing. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching, manned by the Navy, it had also been allocated 10cm Mk III equipment. The hand-turned standby facility was closed on 15 April 1944, and the Type 2 station was disbanded on 31 May 1946..
Habost	By February 1941, formation of this station was underway and it was opened by July 1941 under the control of No 70 Wing and in January 1944 instructions were issued for the Type 8 CHB station to be closed,
Hack Green	This station GCI (10G)was in the process of formation in March 1941 in No 76 Wing, however, on 14 April it ceased to be a separate unit being taken onto the establishment of the Middle Wallop Sector. By February 1942 it had been transferred to the Atcham Sector in No 77 Wing, parented by RAF Calveley, but in May responsibility was transferred to RAF Wrexham. On 1 May 1943 it was transferred to the High Ercall Sector. It was initially a Transportable GCI station but was intended to become an Intermediate Transportable and then a Final station, which was due to be achieved by mid-June 1943. It had been transferred to the High Ercall Sector in No 77 Wing by 1 July 1943, parented by RAF Tilstock. Transferred to No 73 Wing on 15 May 1944, the Type 30 AMES was closed on 26 August 1944, leaving the Type 2 in situ. The GCI station was placed on Care and Maintenance on 18 August 1944 and by January 1945 it was a Type 7 station on Care & Maintenance (Stage I). The GCI station disbanded on 1 June 1946, but was transferred from No 90 Group to Reserve Command on 1 February 1950, but was transferred to No 12 Group, Fighter Command on 1 April 1951. The GCI station was redesignated No 17 Signals Unit on 1 November 1951, probably disbanding in 1958, with the station being placed in C & M. The C & M party was disbanded on 15 March 1959 and the same day No 14 Signals Unit was formed in No 12 Group.
Hampton Hill	This GCI station was in the process of formation in April 1941 under the control of No 73 Wing, however, on 14 April it ceased to be a separate unit being taken onto the establishment of the Church Fenton Sector. It was initially a Transportable GCI station but was intended to become an Intermediate Transportable and then a Final station. It was closed and dismantled in late 1941/early 1942, when the new station at Patrington opened, by which time it had been transferred to the Kirton Lindsey Sector, still in No 73 Wing and had been replaced by Patrington by May 1942.
Happisburgh	This opened as a CHL station (31A) on 25 December 1939 originally under the direct control of HQ Fighter Command, it was transferred to the newly formed No 60 Group on 23 February 1940, parented by RAF Marham. On 13 June 1940 the parenting of the station was taken over by RAF Horsham St Faith. By January 1941 it was commissioned during 1942/43 as both a CHL Tower station and a CMH (Type 13) station. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 74 Wing, which took over the parenting responsibilities. At the end of 1942 it was a full time interception station and was engaged on air reporting and stand-by surface watching. On 1 February 1943 kit became a GCI station, as Happisburgh (GCI) and was transferred from HQ, No 60 Group to HQ, Fighter Command, being placed in the Coltishall Sector, parented by HQ, No 74 Wing. It was transferred to No 73 Wing on 1 July 1943. The GCI station was disbanded on 1 August 1945 and Happisburgh II was still operational as a CHL station in October 1945. The CHL station was placed on Care and Maintenance on 15 April 1948, but was returned to operational status on 1 June 1949 in Northern Signals Area. The CHL station was redesignated No 745 Signals Unit on 1 November 1951. On 15 March 1954 the station was placed on an inactive (retention) basis, parented by RAF Coltishall, No 745 SU having disbanded on 2 September 1953.
Harley Crag	An opening date for this station has not found but by the end of 1942 it had been declared redundant.
Hartland Point	This station was forming as RAF Hartland in November 1940 in No 60 Group, parented by RAF Chivenor and had opened by July 1941 under the control of No 78 Wing, which took over the parenting responsibilities. At the end of 1942 it was engaged on air reporting and stand-by surface watching as well as being a part-time GCI station operating 10cm Mk IV equipment but was due to be upgraded to Mk V and had been allocated high power transmitters. It was still operational as a CHL and CHEL (Type 52) station in October 1945. A Type 31 Station was opened at some point and this closed on 1 November 1945. The CHL and CD No 1 Mk VI stations disbanded on 1 June 1946. On 15 August 1950 it was transferred as an Inactive Station from No 90 Group to Transport Command, parented by RAF Chivenor.
Hawcoat	This station was in the process of formation in April 1941 and had opened by July 1941 under the control of No 77 Wing. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching. It was transferred to No 77 Wing on 1 July 1943 and to No 73 Wing on 15 May 1944. On 7 March 1945 it was placed on Care & Maintenance (Stage I), and disbanded on 1 June 1946.
Hawkshill Down	Originally an Army CD/CHL station at Walmer, it was transferred to the Air Ministry on 29 July 1942 and redesignated RAF Hawkshill Down and No 9022 AMES. A duplicate site was located at RAF Swingate designated No 9032 AMES, both being placed under the control of No 75 Wing. On 1 July 1951 it was transferred as an Inactive Station from No 90 Group to No 11 Group, parented by RAF West Malling, which was changed to RAF Sandwich on 23 August 1951, until 1 April 1959 following disposal of all Air Ministry assets.
Hawkstor	This opened in about June 1940 under the control of No 60 Group, parented by RAF . On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 78 Wing, which took over the parenting responsibilities. By January 1941 the was an 'Advance CH station as station 15M but was in reserve. It was on Care & Maintenance by June 1943 and instructions to close it down were issued in December 1943, it probably closed in April/May 1944.
Hayscastle Cross	This opened in about June 1940 under the control of No 60 Group, parented by RAF Pembroke Dock. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 76 Wing, which took over the parenting responsibilities. It was transferred to No 78 Wing on 1 July 1943. The CH station disbanded on 1 June 1946. On 1 December 1947 it was non-operational with a Type 1 (abandoned) and was transferred from Northern Signals Area to Southern Signals Area. On 29 September 1950 it was transferred as an Inactive Station from Southern Signals Area to Radio Navigation Aids Wing. It was placed on Care and Maintenance as a 'Rotor' site on 12 December 1950. The CH station was redesignated No 392 Signals Unit on 1 November 1951 and disbanded on 15 July 1956, the inactive station being parented by the Closing Down Party, RAF Folly. It was transferred from No 11 Group to No 90 Group on 13 November 1956, parented by No 561 SU (Folly) from 7 December 1956, until 1 May 1958 when it was transferred to RAF Pembroke Dock. Parenting was transferred to RAF Aberporth in No 12 Group on 1 January 1959.
Hesta Geo	This is shown as having both Types 8 and 50 radars, but no other details have so far been found
High Street, Darsham	This was used as one of the first sixteen sites selected for the Main Chain begun in 1937 as Station 28 with work beginning in 1938 of an 'Advance' CH station. Authority for the construction of a Final CH station operating on 27Mc/s was given in March 1939. Originally under the direct control of HQ Fighter Command, it was transferred to the newly formed No 60 Group on 23 February 1940, parented by RAF Honington. On 1 June 1940, parenting responsibilities were transferred to RAF Martlesham Heath. By January 1941 an Emergency Alternative MRU was located at Hinton (28M). On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 74 Wing, which took over the parenting responsibilities and was transferred to No 75 Wing on 1 July 1943. The Type 100 station was disbanded on 6 July 1945. The CH and Type 100 Stations were both disbanded on 1 June 1946. On 1 December 1947 it was non-operational with a Type 1 (C & M) and was transferred from Southern Signals Area to Northern Signals Area. On 25 August 1950 the Control & Reporting station was on C & M and was transferred from No 90 Group to Fighter Command, parented by RAF Coltishall. The GEE-H ground station was absorbed into the Radio Navigational Aids Wing on 21 September 1950, the parenting of the reporting station remained under Fighter Command. It was redesignated No 112 Signals Unit on 1 November 1951. The CH station was redesignated No 430 Signals Unit on 1 November 1951 and disbanded on 1 January 1956, the station being placed on C & M, which disbanded on 15 January 1957. On the same date the station was reduced to inactive status in No 12 Group, parented by RAF Horsham St Faith.
Highdown Hill	This station opened between July 1942 and July 1943 under the control of No 75 Wing. At the end of 1942 it was in the process of being taken over by the RAF as a Type 12 station and was operational with Type 37 10cm Mk IV equipment but was due to be upgraded to Mk V. In January 1944 the Type 37 equipment was declared redundant and that section was closed down. The Type 12 Stand-by Station closed down on 7 October 1944.
Hill Head	This had opened by 23 February 1940 when it was placed under the control of No 60 Group (47) as an Intermediate CH (Type 1) station but was intended to become a CH station, parented by RAF Dyce. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 74 Wing, which took over the parenting responsibilities and then transferred to No 70 Wing on 1 July 1943, and disbanded on 31 May 1946. It was placed on Care and Maintenance as a 'Rotor' site on 12 December 1950. The CH station was redesignated No 170 Signals Unit on 1 November 1951 and disbanded on 1 January 1956, the station being placed on C & M. The C & M party was disbanded on 1 March 1957 and the station was reduced to inactive status, parented by No 409 SU (Buchan), RAF Buchan in No 23 Group
Holbeton	This was commissioned in 1942/43 as a Mobile GCI Station (AA), but no other details have so far been found.
Hollingbury	This was formed as RAF Capel-le-Ferne in October 1940 in No 60 Group, parented by RAF Hawkinge but on 21 October 1940 it was renamed RAF Hollingbury.
Hope Cove	Originally known as Salcombe, this was commissioned in 1942 as a Intermediate Mobile GCI Station and had opened by July 1942 under the control of No 78 Wing, allocated to the Exeter Sector, parented by RAF Mount Batten, but in May parenting responsibility was transferred to RAF Exeter and by October was the responsibility of RAF Harrowbeer. By January 1943 it was a Mobile GCI station and was due to be upgraded to Final standard by May 1943. On 5 February 1945 the GCI station was reduced to intermediate/final status and in October 1945 it was a Type 7 station. The GCI station disbanded in No 78 Wing on 1 June 1946. It was transferred to No 90 Group on 1 August 1946 and to Reserve Command on 1 January 1950. On 1 February 1951 it was transferred to Southern Sector, No 11 Group, Fighter Command. The GCI station was redesignated No 926 Signals Unit on 1 November 1951, and disbanded on 9 September 1957, the station being transferred from No 11 Group to No 81 Group and then back to No 11 Group on 31 March 1958. It was placed in C & M on 31 October 1958.
Hopton	This opened a CHL station (30A) in about June 1940 under the control of No 60 Group, parented by RAF Horsham St Faith. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 74 Wing, which took over the parenting responsibilities. It later took over the CMH (Type 13) equipment from North Foreland and Kingswear. At the end of 1942 it was engaged on air reporting and stand-by surface watching, operating 10cm Mk VI equipment and had been allocated high power transmitters. It was transferred to No 73 Wing on 1 July 1943 and a CHL/GCI Station was formed here on 25 October 1944. The GCI station was disbanded on 1 August 1945 and it was still operational as a CHL and CHEL (Type 54) station in October 1945. On 1 June 1949 the CHL and CHEL station was returned to operational status in Northern Signals Area. The CHL (+ CMH) and CHEL stations were redesignated No 250 Signals Unit on 1 November 1951, and disbanded on 15 July 1958, the station being placed in C & M. The C & M party was disbanded on 1 April 1959 and the station reduced to inactive status, parented by RAF Horsham St Faith in No 12 Group.
Humberston	Formation of this station in No 60 Group commenced in early 1941 and had opened by July 1941 under the control of No 73 Wing. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching. It was still operational as a CHL station in October 1945. The CHL station was placed on Care and Maintenance on 15 April 1948, but was returned to operational status on 1 June 1949 in Northern Signals Area. The CHL station was redesignated No 854 Signals Unit on 1 November 1951, and disbanded on 2 September 1953. On 10 May 1954 it was transferred as an inactive station from No 12 Group to No 43 Group, parented by RAF North Coates, until 25 June 1956 following its disposal.
Huntspill	In 1941 this was planned to be a mobile GCI station (23G) and by the end of October 1941 it was to be allocated to the Colerne Sector, parented by RAF Colerne. It was replaced by Long Load by July 1942.
Hythe	At the end of 1942 it was in the process of being taken over by the RAF as a Type 12 station. In early 1943 a Type 16 AME Station had been sited here under the control of MAP, but on 1 April 1944 it was transferred to the control of No 11 Group, administered by No 75 Wing. By January 1944 it was under the control of No 75 Wing and the Type 12 Stand-by Station was closed down on 7 October 1944. On 25 October 1944, the Type 16 and 24 stations were transferred from Fighter Command to No 60 Group. By March 1945 it was on Care & Maintenance (Stage I). The Type 16 and Type 24 stations were both disbanded on 1 June 1946.
Ingoldmells	Work on this CHL station was begun in January 1940 and it was operating by the end of February under the control of HQ Fighter Command it was transferred to the newly formed No 60 Group on 23 February 1940, parented by RAF Manby. On 13 June 1940, it was renamed RAF Skendleby
Islay	The was proposed as a CHB station to be station 77, but no other details have so far been found.
Islivig/Islivick	This station was in the process of forming in April 1941 and had opened by July 1941 under the control of No 70 Wing. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching. By October 1945 it was retained for Flying Control purposes only, and disbanded on 31 May 1946.
Kendrom	This station was in the process of forming in April 1941 and had opened by July 1941 under the control of No 70 Wing as a Type 2 (CHL) and a Type 31 (CD No 1 Mk V) station. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching and had been allocated 10cm Mk IV/V equipment. By 13 January 1944 the Type 2 station had been declared redundant and authority was given for its closure with the Type 31 section being retained on a Care & Maintenance basis but this was closed on 26 August 1944 and the site was declared as no longer required.
Kete	This station was forming in November 1940 in No 60 Group, parented by RAF Pembroke Dock and had opened by July 1941 under the control of No 76 Wing, which took over the parenting responsibilities. At the end of 1942 it was engaged on air reporting or controlled interception. It was transferred to No 78 Wing on 1 July 1943 and was still operational as a CHEL (Type 52) station in October 1945. (Type 52) The CHL (CDP) and CD No 1 Mk VI stations disbanded on 1 June 1946. On 1 December 1947 it was non-operational with Types 2 and 52 (abandoned) and was transferred from Northern Signals Area to Southern Signals Area. On 25 September 1950 it was transferred as an Inactive Station without equipment to RAF Pembroke Dock, Coastal Command, until 1 August 1958 following disposal of all Air Ministry assets.
Kilchiaran	This station opened in late 1940 under the control of No 60 Group, parented by RAF Port Ellen. By January 1941 this was proposed as a CHL (Type 2) station as station 58A and opened by July 1941 under the control of No 72 Wing, which took over the parenting responsibilities. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching and had been allocated 10cm Mk IV/V equipment and high power transmitters. It was transferred to No 70 Wing on 15 May 1944. On 7 March 1945 it was placed on Care & Maintenance (Stage II), and disbanded (Type 2 and Type 52) on 31 May 1946. A Type 31 Station was opened at some point and this closed on 1 November 1945. On 25 September 1950 it was transferred as an Inactive Station without equipment to HQ, No 66 Group, Home Command. From 28 March 1955 to 15 July 1958 No 127 SU (Kilchiaran) was located here and on its disbandment, the station was placed in C & M. The C & M party was disbanded on 9 January 1959 and the station reduced to inactive status, parented by RAF Turnhouse in No 13 Group.
Kilkeel	Formation of this CH (Type 1) station in No 60 Group commenced in early 1941 and had opened as station 78 by July 1941 under the control of No 77 Wing. It was transferred to No 79 Wing on 27 September 1941 and then to No 72 Wing on 1 July 1943. By January 1945 it was a Type 1 station on Care & Maintenance (Stage II), and disbanded on 31 May 1946. In May 1951 it was listed as redundant in Coastal Command, parented by RAF Aldergrove. Parenting responsibilities were transferred from RAF Aldergrove to RAF Bishop's Court on 1 November 1953 and back to RAF Aldergrove on 14 April 1954.
Kilkenneth	This station was in the process of forming in April 1941 and had opened by July 1941 under the control of No 72 Wing as a CHL station with one source indicating that it was also commissioned as a CH station. It was placed on Care and Maintenance on 12 October 1942. It was transferred to No 70 Wing on 1 July 1943 and by January 1944 was on Care & Maintenance, and it was closed down on 6 October 1944.
Kingsgarth	This was commissioned in 1942/43 as a Mobile GCI Station and had opened by May 1942 under the control of No 73 Wing, allocated to the Ouston Sector, parented by RAF Annan. By October 1942 it had been transferred to No 72 Wing. It was on Care & Maintenance by January 1943, being transferred to No 77 Wing on 1 July 1943 and to No 73 Wing on 15 May 1944. It was closed down on 1 July 1944. On 29 September 1950 it was transferred as an Inactive Station from No 90 Group to Fighter Command which was relieved of this responsibility following the station's derequisition and disposal on 31 January 1946.
Kingswear	This was formed in October 1940 in No 60 Group, parented by RAF Mount Batten. By January 1941 this was under construction as a CHL station as station 14A to take over from West Prawle and had opened by July 1941 under the control of No 78 Wing, which took over the parenting responsibilities. It was commissioned in 1942/43 as a CMH (Type 13) station, which later moved to Hopton. At the end of 1942 it was engaged on air reporting and stand-by surface watching as well as being a part-time GCI station and was operational with 10cm Mk IV equipment. The GCI station was closed down from 1 February 1945 and it was still operational as a CHL and CHEL (Type 52) station in October 1945. The CHL (CDP) and CD No 1 Mk VI stations disbanded on 1 June 1946. On 25 September 1950 it was transferred as an Inactive Station without equipment to RAF Mount Batten, Maintenance Command, which ceased on 31 July 1953 on the station being derequisitioned.
Kinley Hill	Formation of the station commenced in late 1941and had opened by July 1942 under the control of No 73 Wing. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching, and disbanded on 1 June 1946..
Kirkistown Castle	See RAF Greystone
Knights Farm	This CGI station opened between February and July 1942 under the control of No 75 Wing and was allocated to the North Weald Sector, parented by HQ, No 42 Group at Reading. By October 1942 it had been transferred to the Northolt Sector as a reserve station for Foulness. By January 1943 it was being held in reserve in case other stations became unserviceable due to enemy action. It probably closed between June 1944 and January 1945.
L Sharpness Point	An opening date for this station has not found but by the end of 1942 it was engaged on surface watching only.
Lamberton Moor	At the end of 1942 this station was part of the Surface Watching Chain operating 10cm Mk V (Type 52) equipment and by June 1944 it was under the control of No 70 Wing, it disbanded on 31 May 1946.
Langtoft	By February 1941, formation of this GCI station was underway (08G) under the control of No 74 Wing, however, on 14 April it ceased to be a separate unit being taken onto the establishment of the Wittering Sector, parented by RAF Wittering, and by May 1942 two stations were being shown as Langtoft I and II, both in Wittering Sector, parented by RAF Wittering. It was initially opened as a Transportable GCI station but was intended to become an Intermediate Transportable and then a Final station, which was due to be achieved by May 1943. It was transferred to No 73 Wing on 1 July 1943 and by January 1945 was on Care & Maintenance. In October 1945 this was a Type 7 station. The GCI station was redesignated No 966 Signals Unit on 1 November 1951, which disbanded on 15 March 1958, the station being placed on C & M in No 81 Group, and was transferred to No 12 Group on 22 March 1958.
Leathercoats	An opening date for this station has not found but by the end of 1942 this station was operating 10cm Mk V equipment, manned by the Army and had been allocated high power transmitters.
Lisnaskea	This station (28G) opened as as mobile GCI station in about August 1941 under the control of No 79 Wing, and by February 1942 was allocated to St Angelo Sector, parented by RAF St Angelo and on 1 February was transferred from No 60 Group to No 82 Group. By January 1943 it had been upgraded to Intermediate Mobile standard and was due to be placed on Care and Maintenance, when the technical installation was completed. It was transferred to No 72 Wing on 1 July 1943 and by March 1945 it was a Type 8A station on Care & Maintenance (Stage III). The CHB station was closed down on 7 March 1945 and RAF Lisnaskea was closed on 1 July 1945.
Long Load	This CGI station opened between May and July 1942 under the control of No 76 Wing to replace Huntspill and by February 1942 was allocated to the Colerne Sector, parented by RAF Church Stanton which by October 1942 had changed to RAF Weston Zoyland. By January 1943 it was an Intermediate Mobile station. It was transferred to No 78 Wing on 1 July 1943. The GCI station was closed down from 1 February 1945
Loth	Formation of this station commenced in late 1940 under the control of No 60 Group, parented by RAF Wick. By January 1941 this was in the final approval stage as station 48 (CH - Type 1) and was opened by July 1941 under the control of No 70 Wing, which took over the parenting responsibilities.. It was a remote reserve site and was placed on a DGW Care and Maintenance basis in 1943. By June 1944 it was a Type 1 station on Care & Maintenance (Stage I), and disbanded on 31 May 1946. In May 1951 it was listed as redundant in No 90 Group, parented by No 1 GRSS, Grangemouth, but from 1 December 1953 this was transferred to RAF Bishopbriggs, which was withdrawn on 14 June 1954 following derequisition of the station.
Lydden Spout	An opening date for this station has not found but by the end of 1942 this station was operating 10cm Mk V equipment, manned by the Army and had been allocated high power transmitters.
Mablethorpe	An opening date for this station has not found but by the end of 1942 it had been declared redundant.
Macmerry	See Dirleton
Marks Castle	This station was forming in November 1940 in No 60 Group, parented by RAF St Eval and had opened by July 1941 under the control of No 78 Wing, which took over the parenting responsibilities. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching. It was still operational as a CHL station in October 1945, but disbanded on 1 June 1946. On 25 September 1950 it was transferred as an Inactive Station without equipment to RAF St Eval, Coastal Command, but had been derequisitioned on 24 September 1947.
Marsdon	Originally commissioned as an Inter Service CD/CHL station under War Office control, it was transferred to the Air Ministry on 3 April 1942 and placed in No 60 Group, under the control of No 75 Wing. It had been renamed Whitburn by June 1942.
Maughold	By January 1941 this was proposed as a CHL station as station 62A, but no other details have so far been found.
May Island	At the end of 1942 this station was part of the Surface Watching Chain operating 10cm Mk V equipment and by June 1944 it was under the control of No 70 Wing. It was transferred to No 72 Wing on 1 July 1943 and probably closed between June 1944 and January 1945.
Minehead	An opening date for this station has not found but by the end of 1942 it was engaged on surface watching only.
Mossy Bottom	This station opened between July 1942 and July 1943 under the control of No 75 Wing. It probably closed between June 1943 and January 1944.
Navidale	Formation of this station had begun in April 1941 and it had opened as a Type 2 CHL station by July 1941 under the control of No 70 Wing. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching and had been allocated Type 31 (10cm Mk IV/V) equipment. It was reduced to a Care & Maintenance basis on 19 November 1943 with the Type 2 CHL station being closed on 13 December 1943 followed by the Type 31 station being closed on 11 February 1944.
Neatishead	This CGI station (21G) had opened by July 1941 under the control of No 74 Wing, administered both administratively and operational by the Coltishall Sector, initially as a Mobile station but was intended to become an Intermediate Mobile and then a Final station, which it had become by January 1943. It was transferred to No 73 Wing on 1 July 1943 and the CHL station was disbanded in early 1944. In October 1945 it was a Type 7/Type 21 station. The GCI Station was disbanded into the Eastern Sector Operations Centre on 11 March 1947.
Netherbutton	Originally called Kirkwall, authority for the construction of a CH (Type 1) station (Station 50) operating on 50.5Mc/s was given in March 1939. The temporary mast that had been at Ravenscar were transferred to the station in May 1939 and after assembly and testing the station was handed over to the RAF on 2 June. Originally under the direct control of HQ Fighter Command, it was transferred to the newly formed No 60 Group on 23 February 1940, parented by RAF Wick. On 10 October 1940 parenting responsibilities were transferred to RAF Kirkwall. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 70 Wing, which took over the parenting responsibilities. In October 1945 it was scheduled to be placed in Care & Maintenance (Stage II), and disbanded on 31 May 1946. On 28 September 1950 it was transferred as an Inactive Station from Southern Signals Area to the Radio Engineering Unit. It was placed on Care and Maintenance as a 'Rotor' site on 12 December 1950. The CH station was redesignated No 401 Signals Unit on 1 November 1951, disbanding on 15 July 1956, with a C & M party being formed the same day in No 13 Group. The C & M Party disbanded on 1 November 1957 following disposal of all Air Ministry assets.
Nevin	This station had opened in August 1940 by renaming Bryngwran under the control of No 60 Group. On 17 February 1941 it was transferred to No 77 Wing and then transferred to No 73 Wing on 15 May 1944. On 1 June 1944 the CH (Type 1) station was placed on Care & Maintenance (Stage II), but disbanded on 1 June 1946. In May 1951 it was listed as redundant in Maintenance Command, parented by No 31 MU, RAF Llanwrog and later No 7 FTS, RAF Valley, until 28 February 1955, following disposal of all Air Ministry assets.
New Hunstanton	An opening date for this station has not found but by the end of 1942 it had been declared redundant.
Newchurch	See Dymchurch
Newford (Scillies)	This was planned as a mobile GCI station by November 1941 but was commissioned in 1942 in the Portreath Sector as a Intermediate Transportable GCI Station (32G) and had opened by July 1942 under the control of No 78 Wing, parented by RAF Portreath. By January 1943 it was still an Intermediate Mobile station. The Type 16 equipment was placed on Care and Maintenance on 5 October 1944 and by March 1945 the Type 8C station was also on Care & Maintenance (Stage I). The GCI station disbanded on 1 June 1946. It was transferred on temporary loan to the Ministry of Supply on 8 July 1946. On 25 September 1950 it was transferred as an Inactive Station without equipment to RAF St Eval, No 19 Group, which was transferred to RAF St Mawgan on 1 April 1959.
Newgale	Formation of this station had begun in April 1941 under the control of No 76 Wing, but te site was found unsuitable and it was abandoned in late April 1941.
Newtown Butler	This was commissioned in 1942 as a Mobile Receiver Unit and had opened by July 1942 under the control of No 79 Wing. It was transferred to No 72 Wing on 1 July 1943 and probably disbanded between June 1944 and January 1945.
North Cairn	This opened in about June 1940 under the control of No 60 Group, parented by RAF West Freugh. By January 1941 this was 'Advance' CH station 60 but it was planned to be upgraded to CH (Type 1). On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 72 Wing, which took over the parenting responsibilities and was transferred to No 70 Wing on 15 May 1944. On 7 March 1945 it was placed on Care & Maintenance (Stage I), and disbanded on 31 May 1946. By 25 October 1948 it was classed as Inactive (Retention status) in Maintenance Command, parented by RAF Wig Bay.
North Foreland	Originally commissioned as an Inter Service CD/CHL station under War Office control, it was transferred to the Air Ministry on 31 March 1942 and placed in No 60 Group, under the control of No 75 Wing. At the end of 1942 it was engaged on air reporting and stand-by surface watching, operating 10cm Mk VI equipment on a 60ft tower and had been allocated high power transmitters. It was transferred to No 75 Wing on 1 July 1943 and was still operational as a CHL and CHEL (Type 54) station in October 1945.
Northam	Formation of the station, in No 60 Group, commenced in late 1940, parented by RAF Chivenor, and it had opened by July 1941 under the control of No 78 Wing, which took over the parenting responsibilities. By January 1945 it was a Type 1 station on Care & Maintenance (Stage I), which disbanded on 1 June 1946. In May 1951 it was listed as redundant in Fighter Command, parented by RAF Chivenor.
Northstead	This GCI station (22G) opened in September 1941 under the control of No 73 Wing, and by February 1942 was allocated to the Ouston Sector, parented by RAF Acklington. It was initially intended as a Mobile station but was intended to become an Intermediate Mobile and then a Final station, which was due to be achieved by mid-June 1943. In October 1945 this was a Type 7/Type 21 station. On 28 April 1946 it was transferred from Fighter Command to No 90 Group and to Reserve Command on 1 February 1950. On 1 February 1951 it was transferred to Northern Sector, No 12 Group, Fighter Command. The GCI station was redesignated No 236 Signals Unit on 1 November 1951.
Northtown	In 1941 this was planned to be a mobile GCI station (17G) in No 70 Wing and by the end of October 1941 it was to be administered by the Kirkwall Sector.
Noss Hill	This had been opened as an 'Advance' CH (Type 1) station (54) by 1 June 1940 under the control of No 60 Group, parented by RAF Sumburgh, but was intended to become a CH station. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 76 Wing, which took over the parenting responsibilities. It was a remote reserve site and was placed on a DGW Care and Maintenance basis in 1943 and was transferred to No 71 Wing on 1 July 1943, and disbanded on 31 May 1946. On 25 September 1950 it was transferred as an Inactive Station without equipment to HQ, No 66 Group, Home Command, which was transferred to No 64 Group on 1 February 1957 but ceased on 1 May 1957 following disposal of all Air Ministry assets.
Oldcastle Head	An opening date for this station has not found but by the end of 1942 it was engaged on surface watching only.
Orby	This GCI station (06G) commenced formation in late 1940 in No 60 Group, parented by RAF Digby. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 73 Wing, which took over the parenting responsibilities, however, on 14 April it ceased to be a separate unit being taken onto the establishment of the Digby Sector in No 74 Wing, parented by RAF Coningsby, and by May 1942 two stations were being shown as Orby I and II, both in the Digby Sector, now parented by RAF Skegness. It was initially a Mobile station but was intended to become an Intermediate Mobile and then a Final station, which due to be achieved by the middle of February 1943. It was transferred to No 73 Wing on 1 July 1943, and was placed on Care and Maintenance in No 60 Group on 1 August 1945. The GCI station disbanded in No 78 Wing on 1 June 1946. On 25 August 1950 the Control & Reporting station was on C & M and was transferred from No 90 Group to Fighter Command, parented by RAF Church Fenton. The GCI station was redesignated No 696 Signals Unit on 1 November 1951 and the site was reduced to inactive status on 1 December 1954, parented by RAF Stenigot. Parenting was transferred to RAF Flying College, RAF Manby on 12 November 1956, until 16 February 1959 following disposal of all Air Ministry assets.
Orford Castle	An opening date for this station has not found but by the end of 1942 this station was operating 10cm Mk V equipment, manned by the Army and had been allocated high power transmitters.
Ottercops Moss	This was used as one of the first sixteen sites selected for the Main Chain begun in 1937 as Station 40. Authority for the construction of a Final CH station operating on 48Mc/s was given in March 1939. Originally under the direct control of HQ Fighter Command, it was transferred to the newly formed No 60 Group on 23 February 1940, parented by RAF Usworth. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 73 Wing, which took over the parenting responsibilities. During 1942/43 it was commissioned as part of the Buried Reserve. It was closed down on 15 July 1944, and finally disbanded on 1 June 1946..
Oxwich Head	Originally commissioned as an Inter Service CD/CHL station under War Office control, it was transferred to the Air Ministry on 21 April 1942 and placed in No 60 Group, under the control of No 76 Wing. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching. It was transferred to No 78 Wing on 1 July 1943 and was closed in February/March 1944.
Parefield Cliffs	An opening date for this station has not found but by the end of 1942 it had been declared redundant.
Patrington	This station opened in late 1941/early 1942 under the control of No 73 Wing to replace the station at Hampton Hill and was administered by the Church Fenton Sector, but by May 1942 it had been transferred to the Kirton Lindsey Sector, parented by RAF Hutton Cranswick. By October 1942 it had reverted to the Church Fenton Sector, parenting being unchanged. In January 1943 it was an Intermediate Transportable GCI station but was due to be upgraded to Final standard by the middle of February. In October 1945 this was a Type 7/Type 21 station. The GCI Station was disbanded into the Yorkshire Sector Operations Centre on 21 July 1947.
Pen Olver	This station was forming in November 1940 in No 60 Group, parented by RAF St Eval and had opened by July 1941 under the control of No 78 Wing, which took over the parenting responsibilities. It was commissioned in 1942 as both a CMH (Type 13) station and a Type 271(10cm) station. Type 56. At the end of 1942 it was engaged on air reporting and stand-by surface watching, operating 10cm Mk V equipment and had been allocated high power transmitters. It was still operational as a CHL and CHEL (Type 56) station in October 1945. A Type 31 Station was opened at some point and this closed on 1 November 1945. The CHL (CDP), CD No 1 Mk V and Mk VI stations disbanded on 1 June 1946. On 25 September 1950 it was transferred as an Inactive Station without equipment to RAF St Eval, Coastal Command, until 1 November 1954, following derequisition of the site.
Pen y Bryn	This was formed in December 1940 in No 60 Group, parented by RAF Penrhos. By July 1941 under the control of No 77 Wing, which took over the parenting responsibilities. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching. It was transferred to No 77 Wing on 1 July 1943 and to No 73 Wing on 15 May 1944, and was still operational as a CHEL (Type 57) station in October 1945 and was also involved in providing technical training, but disbanded on 1 June 1946. The Type 14 Mk II Station was disbanded on 1 June 1946.
Pevensey	This was used as one of the first sixteen sites selected for the Main Chain begun in 1937 as Station 07. Authority for the construction of a Final CH station operating on 27c/s was given in March 1939 Originally under the direct control of HQ Fighter Command, it was transferred to the newly formed No 60 Group on 23 February 1940, parented by RAF Kenley. By January 1941 this was a CH station with an Emergency Alternative MRU at Chilley (07M). On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 75 Wing, which took over the parenting responsibilities. During 1942/43 it was commissioned as part of the Buried Reserve. A Type 9 Mark IV Station was formed in the existing Type 1 compound on 18 August 1944. In October 1945 it was scheduled to be placed in Care & Maintenance (Stage II). The CH Station was disbanded on 1 June 1946. On 25 August 1950 the Control & Reporting station was on C & M and was transferred from No 90 Group to Fighter Command, parented by RAF West Malling via Wartling. The CH station was redesignated No 322 Signals Unit on 1 November 1951.
Plymstock	This was commissioned in 1942 as a Mobile GCI Station (AA) and had opened by July 1942 under the control of No 75 Wing.
Poling	This was used as one of the first sixteen sites selected for the Main Chain begun in 1937 as Station 08. Authority for the construction of a Final CH station operating on 50.5Mc/s was given in March 1939. Originally under the direct control of HQ Fighter Command, it was transferred to the newly formed No 60 Group on 23 February 1940. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 76 Wing. By January 1941 this was a CH station with an Emergency Alternative MRU at Angmering Park (08M). It was transferred to No 75 Wing on 1 July 1943. The Type 1 (CH) Station was disbanded on 1 June 1946 but re-opened in No 90 Group on 1 March 1948 (on C & M?). The CH station was redesignated No 87 Signals Unit on 1 November 1951, disbanding on 15 July 1956, with a C & M party being formed the same day. The C & M party was disbanded on 1 March 1957 and the station reduced to inactive status, parented by RAF Tangmere.
Polruan	An opening date for this station has not found but by the end of 1942 it was engaged on surface watching only.
Port A	The was proposed as a CHL station to be station 84A, but no further details have so far been found.
Port A	The was proposed as a CHB station to be station 84, but no further details have so far been found.
Port Errol	This station was opened between July 1943 and June 1944 under the control of No 70 Wing but no further details have so far been found.
Port Mor, Tiree	This was formed in early 1941 in No 60 Group and by July 1941 was under the control of No 72 Wing and closed on 12 October 1942.
Prestatyn	This opened as station 54 in about June 1940 under the control of No 60 Group, parented by RAF Sealand. When No 60 Group was split into Wings on 17 February 1941 it was allocated to No 77 Wing, which took over the parenting responsibilities. Type 57. At the end of 1942 it was engaged on air reporting and stand-by surface watching. It was transferred to No 73 Wing on 15 May 1944. By March 1945 it was a Type 2 station on Care & Maintenance (Stage II) but was still operational as a CHEL (Type 57) station in October 1945. The CHL and Type 14 Mk II Stations were disbanded on 1 June 1946. From 9 May 1955 to 15 July 1958 No 130 SU (Prestatyn) was located here and on its disbandment, the station was placed in C & M in No 12 Group. The C & M party was disbanded on 15 March 1959 with the station being reduced to inactive status, parented by RAF Valley in Flying Training Command
Rame Head	This opened as station 15A in about June 1940 under the control of No 60 Group, parented by RAF Mount Batten. When No 60 Group was split into Wings on 17 February 1941 it was allocated to No 78 Wing, which took over the parenting responsibilities. At the end of 1942 it was engaged on air reporting and stand-by surface watching. In October 1945 it was placed in Care & Maintenance (Stage II), and disbanded on 1 June 1946.
Ramsgate	At the end of 1942 it was in the process of being taken over by the RAF as a Type 12 station. By January 1944 it was under the control of No 75 Wing and probably closed between June 1944 and January 1945.
Ravenscar	This site was selected in 1938 for a mobile CH installation in order to provide RDF coverage of the Tyne area. However, its masts were dismantled in April/May 1939 and moved to Rosyth, for transfer to Netherbutton to cover Scapa Flow. At the end of 1942 it was engaged on surface watching only and had been allocated 10cm Mk IV/V equipment and does not appear to come under the control of No 73 Wing until around January 1944. On 26 August 1944, the Type 31 AMES was closed and the site was declared as no longer required for ground radar purposes. The station was disbanded on 1 June 1946.
Rhossilli Bay	An opening date for this station has not found but by the end of 1942 it was engaged on surface watching only and had been allocated 10cm Mk IV/V equipment, although it isn't shown in SD161 until at least January 1945.
Rhuddlan	This was formed in early 1941 in No 60 Group and by July 1941 was under the control of No 77 Wing. It was transferred to No 73 Wing on 15 May 1944. On 7 March 1945 it was placed on Care & Maintenance (Stage II), but disbanded on 1 June 1946. In May 1951 it was listed as redundant in Home Command, parented by RAF Hawarden.
Ringstead	This was formed in December 1940 in No 60 Group, parented by RAF Warmwell. By January 1941 this was under construction as a CH station as station 12 and had opened by July 1941 under the control of No 76 Wing, which took over the parenting responsibilities. It was transferred to No 78 Wing on 1 July 1943 and was still operational in October 1945. The CH, CHEL and CHL stations was redesignated No 703 Signals Unit on 1 November 1951 and disbanded on 15 January 1956, the station being placed on C & M in No 11 Group. The C & M Party was disbanded on 1 August 1957 and the station reduced to inactive status, parented by No 815 SU (Portland).
Ripperstone	This CGI station (25G) opened in late 1941/early 1942 under the control of No 76 Wing, allocated to the Fairwood Common Sector, and by February 1942 was parented by RAF Angle. By October 1942 parenting duties had been assumed by RAF Talbenny. It was initially intended as a Mobile station but was intended to become an Intermediate Mobile and then a Final station, which was due to happen by April 1943. It was transferred to No 78 Wing on 1 July 1943. In October 1945 this was a Type 7 station. It was transferred on loan from Fighter Command to the Admiralty on 1 May 1946. On 29 September 1950 it was transferred as an Inactive Station from Southern Signals Area to Radio Navigation Aids Wing. The GCI station was declared inactive on 1 November 1951, parented by RAF Wythall, which was withdrawn on 14 June 1954 following derequisition of the station.
Rhoddans Point	This was formed in December 1940 as RAF Ballycranmore in No 60 Group, parented by RAF Sydenham but by July 1941 it had been renamed and was under the control of No 77 Wing, which took over the parenting responsibilities. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching. It was transferred to No 79 Wing on 27 September 1941 and then to No 72 Wing on 1 July 1943. By June 1944 it was a Type 2 station on Care & Maintenance (Stage II), and disbanded on 31 May 1946.
Rodel Park	This station was in the process of forming in April 1941 and had opened by July 1941 under the control of No 70 Wing. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching but by 8 January 1944 was no longer required and authority was given for it to close.
Roecliffe	This was commissioned in 1942 as a Mobile GCI Station and opened by May 1942 under the control of No 73 Wing, allocated to Church Fenton Sector, parented by RAF Dishforth. By January 1943 it was still a Mobile station and on 1 May 1943, parenting responsibilities were assumed by RAF Topcliffe. It was on Care & Maintenance in early 1944, and was closed down on 1 July 1944.
Rosehearty	Work on this CHL (Type 2) station (47A) began in January 1940 as part of the second 'crash' programme and was operational by the end of February. It was originally under the direct control of HQ Fighter Command, it was transferred to the newly formed No 60 Group on 23 February 1940, parented by RAF Dyce. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 71 Wing, which took over the parenting responsibilities. It was commissioned in 1942/43 as a Type 271(10cm) station. At the end of 1942 it was engaged on air reporting and stand-by surface watching operating 10cm Mk IV equipment but was due to be upgraded to Mk VI Tower and had been allocated high power transmitters. It transferred to No 70 Wing on 1 July 1943. In October 1945 it was a CHL station scheduled to be placed in Care & Maintenance (Stage II) but was still operational as a CHEL (Type 54) station, and disbanded on 31 May 1946. In May 1951 it was listed as redundant in Home Command, parented by RAF Dyce in No 13 Group. Parenting was transferred to RAF Aberdeen (No 3612 FCU) at some point, until 1 March 1959 following disposal of all Air Ministry assets..
Russland	This station commenced formation in late 1941/early 1942 and had opened by May 1942 under the control of No 70 Wing, allocated to the Kirkwall Sector, parented by RAF Skeabrae. By January 1943 it was an Mobile station (Type 8) and in October 1945 was scheduled to be placed in Care & Maintenance (Stage II). It was transferred to No 90 Group on 20 May 1946, and disbanded on 31 May 1946.
Rye	This was used as one of the first sixteen sites selected for the Main Chain begun in 1937 as Station 05. Authority for the construction of a Final CH station operating on 27Mc/s was given in March 1939. Originally under the direct control of HQ Fighter Command, it was transferred to the newly formed No 60 Group on 23 February 1940, parented by RAF Hawkinge. By January 1941 this was a CH station with an Emergency Alternative MRU at Harvey (05M). On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 75 Wing, which took over the parenting responsibilities. By February 1942 , the GCI had been allocated to Kirkwall Sector and wsa parented by RAF Skeabrae. During 1942/43 it was commissioned as part of the Buried Reserve. A Type 9 Mark IV Station was formed in the existing Type 1 compound on 18 August 1944. The Type 1 (CH) Station was disbanded on 1 June 1946 but re-opened in No 90 Group on 1 April 1948. The CH station was redesignated No 860 Signals Unit on 1 November 1951 and was disbanded on 1 June 1956, the station being placed on C & M, which disbanded on 1 February 1957. On the same date the station was reduced to inactive status in No 11 Group, parented by No 919 SU (Wartling), RAF Wartling. Officers Commanding: - 6 Nov 1939 Flt Lt Andrews
Salcombe	In 1941 this was planned to be a mobile GCI station (35G) but had been renamed Hope Cove by February 1942.
Saligo	This station opened in late 1940 under the control of No 60 Group, parented by RAF Port Ellen. By January 1941 this was 'Advance' CH (Type 1) station 58 but it was planned to be upgraded to CH, the upgrade being completed 1942/43, under the control of No 72 Wing, which took over the parenting responsibilities. It was transferred to No 70 Wing on 15 May 1944. On 7 March 1945 it was placed Care & Maintenance (Stage I), and disbanded on 31 May 1946. On 25 September 1950 it was transferred as an Inactive Station without equipment to HQ, No 66 Group, Home Command, which was transferred to No 64 Group on 1 February 1957 but ceased on 1 May 1957 following disposal of all Air Ministry assets.
Saltburn	It was commissioned in 1942 as a CD No 1 Mk V station. At the end of 1942 it was available as a stand-by surface watching station only. By January 1944 it was under the control of No 73 Wing and was closed with effect from 12 May 1944. On 26 August 1944, the Type 31 AMES was closed and the site was declared as no longer required for ground radar purposes. The Type CD No 1 Station was disbanded on 1 June 1946.
Sanday, Orkney	This was proposed to be built as Station 51A (CHL) by January 1941 but no evidence as been found to suggest it was completed.
Sandwich	This was commissioned in 1942 as a Transportable GCI Station (Type 7/Type 21) and had opened by May 1942 under the control of No 75 Wing, allocated to the Biggin Hill Sector, parented by RAF Manston. By January 1943 it was due to be upgraded to Final GCI standard by April. It was still operational in October 1945. The GCI station was redesignated No 491 Signals Unit on 1 November 1951.
Sango	This station opened in late 1940 under the control of No 60 Group, parented by RAF Castletown. By January 1941 this was 'Advance' CH (Type 1) station 57 but it was planned to be upgraded to CH and was opened by July 1941 under the control of No 70 Wing, which took over the parenting responsibilities. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching. By October 1945 it was also a CHL (Type 2) station and was scheduled to be placed in Care & Maintenance (Stage II), and disbanded on 31 May 1946. On 29 September 1950 it was transferred as an Inactive Station from Southern Signals Area to the Radio Engineering Unit. It was placed in C & M in No 90 Group on 15 January 1951. The CH station was redesignated No 969 Signals Unit on 1 November 1951, and disbanded on 15 November 1955, with RAF Sango becoming a satellite of No 32 SU (Faraid Head). It was reduced to inactive status on xx xxx xxxx, parented by RAF Kinloss in No 18 Group, until 1 March 1959 following disposal of all Air Ministry assets.
Saxa Vord	By January 1941 this was a CHL (Type 2) station as station 54A. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching, manned by the Navy, it had also been allocated 10cm Mk III equipment and high power transmitters but does not appear to come under the control of No 70 Wing until around January 1944, and disbanded on 31 May 1946. On 25 September 1950 it was transferred as an Inactive Station without equipment to HQ, No 66 Group, Home Command. No 91 Signals Unit on a Care and Maintenance basis under the control of HQ, No 90 (Signals) Group, parented by RAF Bishopbriggs. It was transferred to No 13 Group, Fighter Command on 27 September 1957 and possibly disbanded in 2000.
Scarlet Point	This station opened, simply referred to as 'Scarlet' in July 1940, in No 60 Group, parented by RAF Jurby, but at the end of that month it was announced that the name would change to RAF Scarlet Point. By January 1941 the was an 'Advance CH station as station 63 but was planned to be upgraded to CH and had opened by July 1941 under the control of No 77 Wing, which took over the parenting responsibilities. It was transferred to No 73 Wing on 15 May 1944 and by June 1944 was placed on Care and Maintenance and was closed down on 20 June 1944.
School Hill	Originally called Stonehaven, authority for the construction of a CH (Type 1) station (Station 46) operating on 48Mc/s was given in March 1939. Originally under the direct control of HQ Fighter Command, it was transferred to the newly formed No 60 Group on 23 February 1940, parented by RAF Dyce. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 71 Wing, which took over the parenting responsibilities. It transferred to No 70 Wing on 1 July 1943 and was still operational in October 1945, and disbanded on 31 May 1946. On 28 September 1950 it was transferred as an Inactive Station from Southern Signals Area to the Radio Engineering Unit. It was placed on Care and Maintenance as a 'Rotor' site on 12 December 1950 in No 13 Group. The CH station was redesignated No 625 Signals Unit on 1 November 1951, disbanding on 1 July 1956, with a closing down party being formed the same day. The C & M party disbanded on 15 May 1957 and the station was reduced to inactive status, parented by No 409 SU, RAF Buchan. Parenting was transferred to No 977 Signals Unit, Inverbervie on 5 January 1959.
Scousburgh	This station opened between July 1942 and July 1943 under the control of No 71 Wing. It transferred to No 70 Wing on 1 July 1943, and disbanded on 31 May 1946. On 25 September 1950 it was transferred as an Inactive Station without equipment to HQ, No 66 Group, Home Command, which was transferred to No 64 Group on 1 February 1957 and then to RAF Kinloss in No 18 Group on 1 July 1957.
Seaford	An opening date for this station has not found but by the end of 1942 it was engaged on surface watching only.
Seaton Snook	This GCI station (33G) opened in late 1941/early July 1942 under the control of No 73 Wing, allocated to the Catterick Sector, and by February 1942 was parented by RAF Thornaby. It was initially intended as a Mobile station but was intended to become an Intermediate Mobile and then a Final station, which was due to be achieved by early June 1943. It was still operational in October 1945. On 10 April 1946 it was transferred from Fighter Command to No 60 Group, which was absorbed into No 90 Group on 25 April, and then to Reserve Command on 1 February 1950. On 1 February 1951 it was transferred to Northern Sector, No 12 Group, Fighter Command. The GCI station was redesignated No 59 Signals Unit on 1 November 1951 and was transferred to No 81 Group on 1 October 1957 and disbanded on 15 January 1958, with the station being placed in C & M.
Sennen	This was formed in early 1941 in No 60 Group. Sennen website, It was transferred to No 78 Wing on 1 July 1943. The CH station disbanded on 1 June 1946. On 29 September 1950 it was transferred as an Inactive Station from Southern Signals Area to Radio Navigation Aids Wing. It was placed on Care and Maintenance as a 'Rotor' site on 12 December 1950. The GEE slave station was redesignated No 428 Signals Unit on 1 November 1951 and the CH station was retitled No 383 Signals Unit the same day. The latter disbanded on 1 August 1957, with the station being placed in C & M in No 11 Group. The C & M party disbanded on 15 April 1958 and the station was transferred to No 90 Group with No 428 SU (Sennen). The domestic site was reduced to inactive status, parented by RAF Treleaver in No 11 Group, which was transferred to RAF St Mawgan in No 19 Group on 15 March 1959.
Sharpitor	This station probably opened between July 1943 and January 1944 under the control of No 78 Wing but no other details have been found so far. It appears to have been a GEE Master Station, and was redesignated No 899 Signals Unit on 1 November 1951. The CH station was redesignated No 383 Signals Unit on 1 November 1951.
Sheffield	This was commissioned in 1942/43 as a Mobile GCI Station (AA), but no other details have so far been found.
Shipsea	An opening date for this station has not found but by the end of 1942 it was engaged on surface watching only.
Shoreham	An opening date for this station has not found but by the end of 1942 it had been declared redundant.
Shotton	Work beginning in 1938 of an 'Advance' CH station at the site to provice additional coverage to the Main Chain but was opened as a CHL station (39A) on 24 December 1939 originally under the direct control of HQ Fighter Command, it was transferred to the newly formed No 60 Group on 23 February 1940, parented by RAF Usworth. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 73 Wing, which took over the parenting responsibilities. It probably closed between June 1942 and January 1943. Officers Commanding: - 22 Dec 1939 WO-Flt Lt E Swinney 9 Sep 1940 Plt Off W E Dobson
Skaw	This was opened on 1 June 1940, parented by RAF Sullom Voe under the control of No 60 Group as an 'Advance' CH (Type 1) station (56) but was intended to become a CH station, the upgrade being completed 1942/43. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 71 Wing, which took over the parenting responsibilities and was transferred to No 70 Wing on 1 July 1943, and disbanded on 31 May 1946. On 25 September 1950 it was transferred as an Inactive Station without equipment to HQ, No 66 Group, Home Command, which was transferred to No 64 Group on 1 February 1957 but ceased on 1 May 1957 following disposal of all Air Ministry assets.
Skendleby	This was opened as a CHL station (34A) as RAF Ingoldmells but the name was changed on 13 June 1940. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 73 Wing. At the end of 1942 it was engaged on air reporting and stand-by surface watching operating 10cm Mk IV equipment but was due to be upgraded to Mk VI Tower and had been allocated high power transmitters. It was still operational as a CHEL (Type 54) station in October 1945, but disbanded on 1 June 1946. The CHEL station was placed on Care and Maintenance on 15 April 1948, but was returned to operational status on 1 June 1949 in Northern Signals Area. The CHEL station was redesignated No 950 Signals Unit on 1 November 1951, and disbanded on 1 August 1957, the station being placed in C & M in No 12 Group .
Sopley	This GCI station (02G) commenced formation in late 1940 in No 60 Group, parented by RAF Middle Wallop. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 76 Wing, which took over the parenting responsibilities, however, on 14 April it ceased to be a separate unit being taken onto the establishment of the Middle Wallop Sector. By February 1942 it was parented by RAF Hurn but on 1 April 1943 these responsibilities were transferred to RAF Ibsley.. It was initially a Mobile station but intended to become an Intermediate Mobile and then a Final station, which it had become by January 1943. It was transferred to No 78 Wing on 1 July 1943 and on 5 February 1945 the GCI station was reduced to intermediate/final status. It was still operational in October 1945. The GCI Station was disbanded into the Southern Sector Operations Centre on 1 September 1947, but was re-established as a GCO station in Southern Sector on 23 September 1950. The GCI station was redesignated No 227 Signals Unit on 1 November 1951.
South Ronaldsay	By January 1941 this was a CHL (Type 2) station as station 50B and was commissioned during 1942/43 as a duplicate station. At the end of 1942 it was engaged on air reporting and stand-by surface watching, manned by the Navy and was operational with 10cm Mk III equipment and had been allocated high power transmitters. It was transferred to No 70 Wing on 1 July 1943 and by January 1944 was still operational as a CHEL (Type 50) station, and was transferred from the RN to No 60 Group on 1 August 1945, disbanding in October 1945, and disbanded on 31 May 1946. In May 1951 it was listed as redundant in No 90 Group, parented by No 1 GRSS, Grangemouth, but from 1 December 1953 this was transferred to RAF Bishopbriggs, which ceased on 8 November 1954 following derequisition of the station..
South Stack	This was formed in December 1940 in No 60 Group, parented by RAF Penrhos. By July 1941 under the control of No 77 Wing, which took over the parenting responsibilities. At the end of 1942 it was engaged on air reporting and stand-by surface watching, operating 10cm Mk V equipment and had been allocated high power transmitters. It was transferred to No 73 Wing on 15 May 1944. By January 1945 it was a Type 2 station on Care & Maintenance (Stage II). A Type 31 Station was opened at some point and this closed on 1 November 1945. The CHL station and the Type CD No 1 Station were disbanded on 1 June 1946.
Southbourne	This was formed in December 1940 in No 60 Group, parented by RAF Warmwell. By January 1941 this was under construction as a CH station as station 10A with short masts and had opened by July 1941 under the control of No 76 Wing, which took over the parenting responsibilities. It was transferred to No 78 Wing on 1 July 1943. The CH station disbanded on 1 June 1946. In May 1951 it was listed as redundant in Coastal Command, parented by RAF Calshot, later changed to RAF Sopley, which ended on 22 September 1953 following its derequisitioning.
Sputhborne	By February 1941, formation of this station was underway in No 60 Group.
Spittal	An opening date for this station has not found but by the end of 1942 it had been declared redundant.
St Agnes Beacon	At the end of 1942 it had been allocated 10cm Mk IV/V equipment. By January 1944 it was under the control of No 78 Wing.
St Anne's (Blackpool)	This station (36G) was planned to be a mobile GCI station and opened between July 1941 and January 1942 under the control of No 77 Wing, allocated to the Woodvale Sector, parented by RAF Squires Gate. By January 1943 it was an Intermediate Mobile station and was placed on Care & Maintenance in early 1944, and was closed on 3 August 1944. No 997 Signals Unit was formed on 15 May 1953 in No 90 Group. It was transferred to No 12 Group on 10 November 1954 and disbanded on 1 August 1957, the station being placed in C & M.
St Anne's Head	Formation commenced in late 1941/early 1942 and by May 1942 it was a GCI station in No 77 Wing and had been allocated to the Woodvale Sector, parented by RAF Squires Gate. It was commissioned in 1943 as a CD No 1 Mk V station and an Intermediate Transportable GCI station and had been allocated high power transmitters. By January 1944 it was under the control of No 78 Wing and probably closed between June 1944 and January 1945.
St Bees Head	Formation of this station had begun in April 1941 and it had opened by July 1941 under the control of No 77 Wing. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching. In January 1944 instructions were issued for the Type 2 CHL station to be closed, but it appears to have been transferred to No 73 Wing on 15 May 1944.
St Cyrus	Work on this CHL station (45A) began in January 1940 as part of the second 'crash' programme and was operational by the end of February. It was originally under the direct control of HQ Fighter Command, it was transferred to the newly formed No 60 Group on 23 February 1940, parented by RAF Dyced. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 71 Wing, which took over the parenting responsibilities. It was commissioned in 1942 as a CD No 1 Mk V station. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching. It transferred to No 70 Wing on 1 July 1943 and on 26 August 1944, the Type 31 AMES was closed leaving the Type 2 in situ which was still operational in October 1945, and disbanded on 31 May 1946. On 25 September 1950 it was transferred as an Inactive Station without equipment to HQ, No 66 Group, Home Command, which was transferred to No 64 Group on 1 February 1957 but ceased on 1 May 1957 following disposal of all Air Ministry assets.
St David's Head	At the end of 1942 it was operating 10cm Mk V equipment and had been allocated high power transmitters. By January 1944 it was under the control of No 78 Wing. A Type 31 Station was opened at some point and this closed on 1 November 1945. The CD No 1 Mk VI station disbanded on 1 June 1946. On 1 December 1947 it was non-operational with a Type 52 (abandoned) and was transferred from Northern Signals Area to Southern Signals Area.
St Lawrence	Constructed as a Remote Reserve CH station it was ready for use July 1942 and July 1943 under the control of No 75 Wing. By March 1945 it was a Type 1 station on Care & Maintenance (Stage I). In May 1951 it was listed as redundant in Coastal Command, parented by RAF Calshot, later changed to RAF Ventnor, which ceased on 31 August 1953 following the station's derequisition.
St Margaret's Bay	This station probably opened between June 1943 and January 1944, under the control of No 75 Wing. On 24 August 1944 formation commenced of a Type 13 AMES and a Type 26 AMES at the station, but the latter was disbanded on 11 October 1944. It was still operational as a CHEL (Type 52) station in October 1945, but at some point closed before being returned to operational status on 1 June 1949 in Southern Signals Area. The CHEL station was redesignated No 1 Signals Unit on 1 November 1951, which disbanded on 15 April 1958 and the station was placed in C & M.
St Marks Castle	An opening date for this station has not found but by the end of 1942 it was a dual-role station engaged on air reporting and surface watching.
St Quivox	Formation of this GCI station (15G) had begun in April 1941, in No 72 Wing, however, on 14 April it ceased to be a separate unit being taken onto the establishment of the Tern Hill Sector. It was initially planned as a Mobile station but was intended to become an Intermediate Mobile and then a Final station. On being upgraded to IM standard it changed its name to Fullarton Heath, probably between December 1941 and June 1942.
St Twynnell's	This was opened in about June 1940 under the control of No 60 Group, parented by RAF Carew Cheriton, which was changed to Pembroke Dock in August 1940. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 76 Wing, which took over the parenting responsibilities. Site (ii) was commissioned during 1942/43 with the original site (i) being released for Type 9000 use. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching. It was transferred to No 78 Wing on 1 July 1943. By January 1945 it was a Type 2 station on Care & Maintenance (Stage I), which disbanded on 1 June 1946. On 1 December 1947 it was non-operational with a Type 2 (abandoned) and was transferred from Northern Signals Area to Southern Signals Area. With the disbandment of No 991 SU, the station was placed in C & M on 1 October 1958 in No 11 Group. The C & M party was disbanded on 15 December 1958 and the station reduced to inactive status, parented by RAF Pembroke Dock in No 19 Group. Parenting was transferred to RAF Aberporth in No 12 Group on 1 January 1959.
Sidmouth	This was opened in August 1940 in No 60 Group, parented by RAF Exeter, but it name was changed to RAF Branscombe in November 1940.
Snaefell	The site was selected as part of the ROTOR 3 programme, as a CHEL station with a R11 Operations Block. Some work on the station commenced with a target completion date of April 1956. However, by April 1956, many existing ROTOR site had already closed down and Snaefell was reduced to inactive (retention) status on 29 June 1956, parented by the RAF OCTU, RAF Jurby in No 22 Group.
Start Point	Type 54. It was commissioned in 1942 as a Type 14 station with Type 273 Naval equipment in No 78 Wing. At the end of 1942 it was operating 10cm Mk IV equipment but was due to be upgraded to Mk VI Tower and had been allocated high power transmitters. By January 1944 it was under the control of No 78 Wing and was later transferred to the 9th Air Force but was transferred back to No 60 Group on 20 November 1944. A Type 41 Station was opened at some point and this closed on 1 November 1945. The CD No 1 Mk VI station disbanded on 1 June 1946.
Staxton Wold	This was used as one of the first sixteen sites selected for the Main Chain begun in 1937 as Station 36. Authority for the construction of a Final CH station operating on 50.5Mc/s was given in March 1939. It was originally under the direct control of HQ Fighter Command, it was transferred to the newly formed No 60 Group on 23 February 1940, parented by RAF Driffield. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 73 Wing, which took over the parenting responsibilities. During 1942/43 it was commissioned as part of the Buried Reserve. It was disbanded on 1 June 1946. On 18 September 1950 it was transferred as an Inactive Station from Southern Signals Area to the Radio Engineering Unit. It was placed on Care and Maintenance as a 'Rotor' site on 12 December 1950 and was transferred from No 90 Group to No 12 Group, Fighter Command on 9 July 1951, parented by RAF Linton-on-Ouse. The CH station was redesignated No 191 Signals Unit on 1 November 1951 and disbanded on 1 January 1956, the station being placed on C & M.. It re-opened as part of the 'Rotor' System and is still in operation as a Remote Radar Head making it the oldest surviving radar station in the world.
Staythorpe	This GCI station had opened by May 1942 under the control of No 73 Wing and was allocated to the Digby Sector, parented by RAF Syerston. By January 1943 it was an Mobile station and was placed on Care & Maintenance in early 1944 and was closed down on 1 July 1944.
Stenigot	This was used as one of the first sixteen sites selected for the Main Chain begun in 1937 as Station 34 with work beginning in 1938 of an 'Advance' CH station. Authority for the construction of a Final CH station operating on 48Mc/s was given in March 1939. It was originally under the direct control of HQ Fighter Command, it was transferred to the newly formed No 60 Group on 23 February 1940, parented by RAF Manby. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 73 Wing, which took over the parenting responsibilities. In October 1945 it was scheduled to be placed in Care & Maintenance (Stage II), but disbanded on 1 June 1946, however, it re-opened in No 90 Group on 1 March 1948. One of the masts here is still used by the RAF to assess the aptitude of candidates to become aerial erectors. The GEE slave station was redesignated No 4 Signals Unit on 1 November 1951. The CH station was redesignated No 178 Signals Unit on 1 November 1951, and disbanded on 1 May 1956.
Stoer	This station was in the process of forming in April 1941 and had opened by July 1941 under the control of No 70 Wing. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching. In January 1944 instructions were issued for the Type 2 CHL station to be closed.
Stoke Holy Cross	This was used as one of the first sixteen sites selected for the Main Chain begun in 1937 as Station 30. Authority for the construction of a Final CH station operating on 50.5Mc/s was given in March 1939. It was originally under the direct control of HQ Fighter Command, it was transferred to the newly formed No 60 Group on 23 February 1940, parented by RAF Marham, which was changed to Horsham St Faith on 10 July 1940. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 74 Wing, which took over the parenting responsibilities. By January 1941 this was a CH station with an Emergency Alternative MRU (30M) proposed for Avenue but it is not known if it was completed at the moment. During 1942/43 it was commissioned as part of the Buried Reserve. It was transferred to No 73 Wing on 1 July 1943. In October 1945 it was scheduled to be placed in Care & Maintenance (Stage II). On 1 November 1946, it became home to Nos 116 and 1206 AMES under the name AMES Stoke Holy Cross. The Type 1 (CH) Station was re-opened in No 90 Group on 1 June 1948, and was redesignated No 353 Signals Unit on 1 November 1951, disbanding on 1 July 1956, with a C & M party being formed the same day, which disbanded on 15 January 1957. On the same date the station was reduced to inactive status in No 12 Group, parented by RAF Horsham St Faith.
Strumble Head	This opened in about June 1940 under the control of No 60 Group, parented by RAF Pembroke Dock. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 76 Wing, which took over the parenting responsibilities. It was commissioned during 1942. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching. It was transferred to No 78 Wing on 1 July 1943. By March 1945 it was a Type 2 station on Care & Maintenance (Stage II), which disbanded on 1 June 1946. On 1 December 1947 it was non-operational with a Type 2 (abandoned) and was transferred from Northern Signals Area to Southern Signals Area.
Sturminster Marshall	This GCI station (07G) was in the process of formation in April 1941 under the control of No 76 Wing, however, on 14 April it ceased to be a separate unit being taken onto the establishment of the Middle Wallop Sector, parented by RAF Hurn. It was transferred to No 78 Wing on 1 July 1943 and probably closed in May/June 1944. On 7 March 1945 the Type 2 CHL station was placed on Care and Maintenance.
Swansea	An opening date for this station has not found but by the end of 1942 it was engaged on surface watching only. On 26 August 1944, the Type 2 AMES was closed and the site was declared as no longer required for ground radar purposes.
Swingate (Dover)	Originally known as Dover, it was used as one of the first five sites chosen in 1936 for the Intermediate Chain as both a transmitting (one 240 ft tower) and receiving station (two 240 ft towers). It was retained as one of sixteen sites Main Chain begun in 1937 as Station 04. The station was completed by July 1938 following the decision to convert it to both a transmitting and receiving station, but not ready for operation as it still needed to be calibrated. Authority for the construction of a Final CH station operating on 50.5Mc/s was given in March 1939. The CHL element (Station 04A) was activated on 11 February 1940 under the direct control of HQ Fighter Command, being transferred to the newly formed No 60 Group on 23 February 1940, parented by RAF Hawkinge. Its name was changed to RAF Swingate in October 1940. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 75 Wing, which took over the parenting responsibilities. By January 1941 it was operating an Emergency Alternative MRU at Hollingbury (04M). In May 1942 it also became a duplicate site, as No 9032 AMES, for No 9022 AMES at Hawkshill Down. At the end of 1942 it was engaged on air reporting or controlled interception. A Type 9 Mark IV Station was formed in the existing Type 1 compound on 18 August 1944. It was still operational as a CHL station in October 1945. The Type 1 (CH) Station The CH Station was disbanded on 1 June 1946, but re-opened in No 90 Group on 1 February 1948. The CHL station was returned to operational status on 1 June 1949 in Southern Signals Area. The GEE-H ground station was absorbed into the Radio Navigational Aids Wing on 21 September 1950, the parenting of the reporting station remained under Fighter Command. The CH (+ CMH) and CHEL stations were redesignated No 762 Signals Unit on 1 November 1951. Officers Commanding: - 6 Nov 1939 Flt Lt Best
Tannach	A CHL station was opened at RAF Thrumster in 1940 but in November it was separated from the CH element as a separate station to be known as RAF Tannach. By January 1941 it was known as station 49A, coming under the control of No 70 Wing the following month. In October 1945 it was a CH (Type 1) station due to placed on Care & Maintenance (Stage II), and disbanded on 31 May 1946. In May 1951 it was listed as redundant in No 90 Group, parented by No 1 GRSS, Grangemouth, but from 1 December 1953 this was transferred to RAF Bishopbriggs, which ceased on 21 May 1955, following the station's derequisition.
Tan-y-Bwlch	This was formed in October 1940 in No 60 Group, parented by RAF Aberwstwyth but was renamed RAF Castell Mawr on 18 December 1940.
Tees	This was commissioned in 1942/43 as a Mobile GCI Station (AA), but no other details have so far been found.
The Jacka	Originally commissioned as an Inter Service CD/CHL station under War Office control, it was transferred to the Air Ministry on 1 May 1942 and placed in No 60 Group, under the control of No 78 Wing. At the end of 1942 it was engaged on air reporting and stand-by surface watching operating 10cm Mk IV equipment but was due to be upgraded to Mk V. It was still operational as a CHEL (Type 52) station in October 1945. A Type 31 Station was opened at some point and this closed on 1 November 1945. The CHL (CDP) and CD No 1 Mk VI stations disbanded on 1 June 1946.
The Law	Originally commissioned as an Inter Service CD/CHL station under War Office control, it was transferred to the Air Ministry on 22 May 1942 and placed in No 60 Group, under the control of No 71 Wing. By end of 1942, it was a dual-role station engaged on air reporting and surface watching and had been allocated 10cm Mk IV/V equipment. It transferred to No 72 Wing on 1 July 1943 and the CHL station closed down in December 1943 although it continued to operate in the surface watching role. On 26 August 1944, the Type 31 AMES was closed and the site was declared as no longer required for ground radar purposes.
The Needles	Originally commissioned as an Inter Service Type 31 (CD)/Type 2 (CHL) station under War Office control, it was transferred to the Air Ministry on 20 February 1942 and placed in No 60 Group, under the control of No 75 Wing. At the end of 1942 it was engaged on air reporting and stand-by surface watching, operating the Type 31 (CD, 10cm Mk V) equipment. On 13 January 1944, the Type 2 section was declared redundant and authority was given for its closure, although the gantry and turning gear was retained for possible alternative uses but was transferred to the War Office on 26 April 1944. The CD No 1 Mk V Station was disbanded on 1 June 1946.
The Verne, Portland	Type 54 and type 57. It was commissioned in 1942 as a Type 14 station with Type 273 Naval equipment. At the end of 1942 it was operating 10cm Mk IV equipment but was due to be upgraded to Mk VI Tower and had been allocated high power transmitters. By January 1944 it was under the control of No 78 Wing and was still operational as a CHEL (Type 54) station in October 1945. A Type 41 Station was opened at some point and this closed on 1 November 1945. The CD No 1 Mk VI station disbanded on 1 June 1946. The CHEL station was returned to operational status on 1 June 1949 in Southern Signals Area. No 815 Signals Unit was formed under the control of HQ Fighter Command at The Verne, Portland on 20 February 1953 as a CEW Station, parented by RAF Sopley and disbanded on 15 July 1958. The station was then placed in C & M, until 16 January 1959 when it was reduced to inactive status, parented by RAF Sopley.
Thorpeness	This station opened between July 1942 and July 1943 under the control of No 74 Wing. At the end of 1942 it was operating 10cm Mk VI equipment on a 200ft tower. It was transferred to No 75 Wing on 1 July 1943. The CD No 1 Station was disbanded on 1 June 1946. On 1 December 1947 it was non-operational with a Type 54 (abandoned) and was transferred from Southern Signals Area to Northern Signals Area. In May 1951 it was listed as redundant in Fighter Command, parented by RAF Wattisham, which ended on 29 September1953 following its derequisitioning.
Thrumster	Provided long range cover for the extreme north of Scotland, it had opened by 23 February 1940 as an 'Advance' CH station (49) intended to become a CH station, when it was placed under the control of No 60 Group, parented by RAF Wick. A CHL station was also opened here but in November 1940 this part was renamed RAF Tannach, leaving the CH station as RAF Thrumster. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 70 Wing, which took over the parenting responsibilities. It probably closed between June 1942 and June 1943.
Tilly Whim	This station probably opened between July 1943 and January 1944 under the control of No 78 Wing but no other details have been found so far.
Tiree	The was proposed as a CH station to be station 82 and may have became Ben Hough
Tiree	The was proposed as a CHB station to be station 83 and may have became Kilkenneth
Tor Point	An opening date for this station has not found but by the end of 1942 it was engaged on surface watching only.
Tower	This station was forming at Blackpool in November 1940 in No 60 Group, parented by RAF Blackpool and by January 1941 was still under construction as both a CH (station 64) and a CHL (Naval) station (station 64B). It had opened by July 1941 under the control of No 77 Wing, which took over the parenting responsibilities. If this was Blackpool, it was dismantled after two months of operational tests after June 1942.
Treen	This station opened between July 1942 and July 1943 under the control of No 78 Wing. It probably closed between June 1944 and January 1945.
Trelanvean	This station was in the process of formation in March 1941 and had opened by July 1941 under the control of No 78 Wing. In October 1945 it was a CH station due to placed on Care & Maintenance (Stage II). On 29 September 1950 it was transferred as an Inactive Station from Southern Signals Area to Radio Navigation Aids Wing. It was placed on Care and Maintenance as a 'Rotor' site on 12 December 1950. The CH station was redesignated No 708 Signals Unit on 1 November 1951. It was transferred No 11 Group, Fighter Command on 11 June 1952 and disbanded on 1 April 1955, the site becoming a a satellite of No 644 SU (Treleaver). No 1 Communications Trials Unit (Trelanvean) was formed here in Signals Command as a lodger unit on 1 February 1959. The station was transferred from No 11 Group to HQ Signals Command on 2 March 1959.
Treleaver	This GCI station (24G) opened in December1941 under the control of No 78 Wing, and was administered by RAF Predannack for pay rations and accommodation but by the Portreath Sector for operations, but in May parenting responsibility was transferred to RAF Portreath and by October parented had reverted to RAF Predannack. It was initially intended as a Mobile station but was intended to become an Intermediate Mobile and then a Final station. By January 1943 it had been upgraded to IM standard and was due to be upgraded to Final standard by the middle of February. It was still operational in October 1945. (Type 7 and 21) It was transferred from Fighter Command to No 90 (Signals) Group on 1 May 1946. The CH and GCI stations disbanded in No 78 Wing on 1 June 1946. On 29 September 1950 it was transferred as an Inactive Station from Southern Signals Area to Radio Navigation Aids Wing. The GCI, CEW and/or CHEL station was redesignated No 502 Signals Unit on 1 November 1951. No 644 SU was formed here on 15 January 1953 in No 90 Group, but was transferred to No 11 Group on 26 February 1955. A C & M party was formed at some point, which disbanded on 1 April 1959 when the station was reduced to inactive status, parented by RAF St Mawgan in No 19 Group.
Trerew	This station opened in August 1940 having originally been sired at Carnanton in No 60 Group. On 17 February 1941 it was placed under the control of No 78 Wing. In October 1945 it was scheduled to be placed in Care & Maintenance (Stage II). The CH station disbanded on 1 June 1946. On 29 September 1950 it was transferred as an Inactive Station from Southern Signals Area to Radio Navigation Aids Wing. It was placed on Care and Maintenance as a 'Rotor' site on 12 December 1950. The GEE Monitor station was redesignated No 564 Signals Unit on 1 November 1951, disbanding on 1 April 1958. The CH station was redesignated No 943 Signals Unit on 1 November 1951, and disbanded on 1 August 1957, the station being placed in C & M in No 11 Group. The C & M Party disbanded on 2 June 1958 and the station reduced to inactive status, parented by No 644 SU (Treleaver).
Trevescan	This station opened in late 1940 under the control of No 60 Group, parented by RAF St Eval. On 17 February 1941 it was placed under the control of No 78 Wing, which took over the parenting responsibilities. It probably closed between June 1943 and January 1944.
Trevose Head	This station was forming as 'Trevose' in November 1940 in No 60 Group, parented by RAF St Eval and had opened by July 1941 under the control of No 78 Wing, which took over the parenting responsibilities. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching.
Trewan Sands	This station (19G) had opened by July 1941 under the control of No 77 Wing and by the end of October 1941 it was being administered by the Valley Sector. By February 1942 it was still allocated to the Valley Sector, parented by RAF Valley. It was initially to be a Mobile station but was intended to become an Intermediate Mobile and then a Final station, which was due to be achieved by the middle of March 1943. It was transferred to No 73 Wing on 15 May 1944. The GCI station ceased operations on 18 August 1944 and On 7 March 1945 the Type 7 station was placed on Care & Maintenance (Stage I), but disbanded on 1 June 1946. On 29 September 1950 it was transferred as an Inactive Station from Southern Signals Area to the Radio Engineering Unit. The GCI station was redesignated No 437 Signals Unit on 1 November 1951, which disbanded on 11 February 1957 and the station was reduced to inactive status, parented by RAF Valley in No 23 Group.
Trewavas Head	An opening date for this station has not been found but by the end of 1942 it had been declared redundant.
Trimley Heath	This had been a Mobile station (05G) under the name of Waldringfield but on being upgraded to Intermediate Mobile standard its name was changed to Trimley Heath. It was commissioned in 1942 as a Final GCI Station and had opened by July 1941, under the control of No 74 Wing. By the end of October 1941 it was being administered by the Debden Sector, but in May parenting responsibility was transferred to RAF Martlesham, whilst it remained allocated to the Debden Sector. It was transferred to No 75 Wing on 1 July 1943 and was still operational in October 1945. (Type 7 and Type 21) The GCI Station was disbanded into the Metropolitan Sector Operations Centre on 14 July 1947. On 1 December 1947 it was operating Types 7, 11 and 21 (technical responsibility only) and was transferred from Southern Signals Area to Northern Signals Area. It was placed on C & M at some point but the C & M Party was disbanded on 1 April 1955 when the location became a satellite of No 144 SU (Bawdsey). No 484 Signals Unit (Trimley Heath) formed here on 15 May 1955, but disbanded on 15 February 1957.
Trimingham	Originally an Army CD/CHL station it was transferred to the Air Ministry on 29 July 1942 as No 9021 AMES with the duplicate unit at Trimingham House being designated No 9031 AMES, the combined units being RAF Trimming ton. It was placed under the control of No 74 Wing and at the end of 1942 was operating 10cm Mk VI equipment on a 200ft tower. It was transferred to No 73 Wing on 1 July 1943 and was still operational as a CHEL (Type 54) station in October 1945. The CHEL station was placed on Care and Maintenance on 15 April 1948, but was returned to operational status on 1 June 1949 in Northern Signals Area, and was redesignated No 432 Signals Unit on 1 November 1951.
Truleigh Hill	This had opened in about June 1940 as a CHL station (07B), under the control of No 60 Group, parented by RAF Tangmere. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 75 Wing, which took over the parenting responsibilities. At the end of 1942 it was engaged on air reporting and stand-by surface watching and had been allocated 10cm Mk IV/V equipment. In early 1944, it became the Slave Site for a Type 7000 Heavy Mobile Chain (GEE). It was still operational as a CHL and CHEL (Type 51) station in October 1945. A Type 41 Station was opened at some point and this closed on 1 November 1945. The CD No 1 Mk V Station was disbanded on 1 June 1946. The CHEL station was placed on Care and Maintenance on 15 April 1948, but was returned to operational status on 1 June 1949 in Southern Signals Area. The GEE Slave station was redesignated No 894 Signals Unit on 1 November 1951. The CHL station was redesignated No 607 Signals Unit on 1 November 1951 and disbanded on 1 August 1957, the station being placed in C & M in No 11 Group . The C & M party was disbanded on 1 January 1959 and the station reduced to inactive status, parented by RAF Wartling in No 11 Group.
Tyne	This was commissioned in 1942/43 as a Mobile GCI Station (AA), but no other details have so far been found.
Ulbster	Formation of the station commenced in late 1941 and it had been commissioned by July 1942 under the control of No 70 Wing. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching and had been allocated 10cm Mk IV/V equipment. The Type 31 station was closed down on 1 December 1944 and it was still operational as a CHL (Type 2) station in October 1945, and disbanded on 31 May 1946. On 25 September 1950 it was transferred as an Inactive Station without equipment to HQ, No 66 Group, Home Command, which was transferred to No 64 Group on 1 February 1957 but ceased on 1 May 1957 following disposal of all Air Ministry assets.
Ventnor	This was used as one of the first sixteen sites selected for the Main Chain begun in 1937 as Station 10 with work beginning in 1938 of an 'Advance' CH station. Authority for the construction of a Final CH station operating on 22.69c/s was given in March 1939. It was originally under the direct control of HQ Fighter Command, it was transferred to the newly formed No 60 Group on 23 February 1940, parented by RAF Gosport. By January 1941 this was a CH station with an Emergency Alternative MRU being proposed at Paradise (10M). On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 76 Wing, which took over the parenting responsibilities. It was commissioned in 1942/43 as a Type 14 station with Type 273 Naval equipment. At the end of 1942 it was operating 10cm Mk IV equipment. It was also operating a 10cm Mk VI equipment on an experimental basis and had been allocated high power transmitters. It was transferred to No 75 Wing between July and December 1941. In early 1943 a Type 16 AME Station had been sited here under the control of MAP, but on 1 April 1944 it was transferred to the control of No 11 Group, administered by No 75 Wing. On 11 October 1944 the Type 16 Station was transferred from HQ ADGB top No 60 Group. The Type 24 station was transferred from HQ Fighter Command to No 60 Group on 24 November 1944. By March 1945 it was a Type 1 and 16 station on Care & Maintenance (Stage I). It was still operational as a CHEL (Type 52) station in October 1945. A Type 41 Station was opened at some point and this closed on 1 November 1945. The CH, CD No 1, Type 16 and Type 24 Stations were all disbanded on 1 June 1946. The CHEL station was returned to operational status on 1 June 1949 in Southern Signals Area. On 25 August 1950 the Control & Reporting station was on C & M and was transferred from No 90 Group to Fighter Command, parented by RAF Tangmere. The CHL (+ CMH), CHEL and CH stations were redesignated No 23 Signals Unit on 1 November 1951.
Waldringfield	This GCI station (05G) commenced formation in late 1940 in No 60 Group, as RAF Etton, but was renamed in early 1941 after being resited to Martlesham, with parenting being transferred to RAF Debden. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 74 Wing, which took over the parenting responsibilities, however, on 14 April it ceased to be a separate unit being taken onto the establishment of the Debden Sector, parented by RAF Martlesham Heath. It was initially a Mobile station but intended to become an Intermediate Mobile and then a Final station. However on becoming a IM station its name was changed again, to Trimley Heath, probably between June 1942 and January 1943.
Walton (Tower)	This opened as a CHL station on 7 December 1939 originally under the direct control of HQ Fighter Command, it was transferred to the newly formed No 60 Group on 23 February 1940, parented by RAF North Weald. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 74 Wing, which took over the parenting responsibilities. By January 1941 this was a CHL station as station 23A and was commissioned during 1942. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching. It was transferred to No 75 Wing on 1 July 1943. A Type 13 Station was formed on 3 March 1945. The CHL Station and Type 13 Mk II station were disbanded on 1 June 1946. On 1 December 1947 it was non-operational with Types 2 and 13 (abandoned) and was transferred from Southern Signals Area to Northern Signals Area. In May 1951 it was listed as redundant in Fighter Command, parented by RAF Felixstowe, which ended on 25 November 1953 following its derequisitioning.
Warden Point	An opening date for this station has not found but by the end of 1942 it was being used for tracking mine-laying aircraft, manned by the Army but was later transferred to the RAF. By 1 July 1943 it had been placed in No 75 Wing. It was closed on 14 April 1944 and the site transferred back to the Army.
Warren	This Type 1 Station opened in about June 1940 under the control of No 60 Group, parented by RAF Carew Cheriton, which was changed to Pembroke Dock in August 1940. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 76 Wing, which took over the parenting responsibilities and was transferred to No 78 Wing on 1 July 1943. It was closed on 5 January 1945.
Wartling	This GCI station (20G) opened in late 1941/early 1942 under the control of No 75 Wing, administered by the Kenley Sector and by February 1942 was still in Kenley Sector, being parented by RAF Shoreham but in December 1942 it was transferred to Ford Sector. On 15 January 1943, administration responsibilities were transferred to RAF Eastbourne. Initially as a Mobile station but was intended to become an Intermediate Mobile and then a Final station, the target date for which was April 1943. By 1 July 1943 it was again in the Kenley Sector, now parented by RAF Gatwick and was still operational as a CGI station in October 1945. The GCI station was redesignated No 919 Signals Unit on 1 November 1951.
Watness	This Type 2 station had opened by July 1941 under the control of No 71 Wing. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching. It transferred to No 70 Wing on 1 July 1943, and disbanded on 31 May 1946. In May 1951 it was listed as redundant in No 90 Group, parented by No 1 GRSS, Grangemouth, but from 1 December 1953 this was transferred to RAF Bishopbriggs, which was withdrawn on 14 June 1954 following derequisition of the station.
West Beckham	This was used as one of the first sixteen sites selected for the Main Chain begun in 1937 as Station 32. Before the full CH station was completed, the site was chosen in 1938 for a mobile CH installation in order to provide RDF coverage of the Wash area. Authority for the construction of a Final CH station operating on 22.69Mc/s was given in March 1939. It was originally under the direct control of HQ Fighter Command, it was transferred to the newly formed No 60 Group on 23 February 1940, parented by RAF Bircham Newton. By January 1941 an Emergency Alternative MRU (32 M) was proposed at Kelling but it is not known at present if it was completed. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 74 Wing, which took over the parenting responsibilities. During 1942/43 it was commissioned as part of the Buried Reserve. t was transferred to No 73 Wing on 1 July 1943 and was still operational as a CH and CHEL (Type 55) station in October 1945. The CHEL station was returned to operational status on 1 June 1949 in Northern Signals Area. The CH (+ CMH) and CHEL stations were redesignated No 820 Signals Unit on 1 November 1951, disbanding on 1 July 1956 in No 12 Group, with a C & M party being formed the same day. The C & M party disbanded on 15 January 1958, with the station being reduced to inactive status, parented by RAF Coltishall.
West Prawle	Authority for the construction of a CH station (Station 14) operating on 50.5Mc/s was given in March 1939 with the name Prawle Point but this was obviously changed. It opened in June 1940 and was placed under No 60 Group, parented by RAF Mount Batten. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 78 Wing, which took over the parenting responsibilities. By January 1941 this was 'Advance' CH station but it was planned to be upgraded to CH. A CHL was also set up here as station 14A but was withdrawn when Kingswear was ready. In early 1944, it became the Slave Site for a Type 7000 Heavy Mobile Chain (GEE). In October 1945 it was scheduled to be placed in Care & Maintenance (Stage II). The CH station disbanded on 1 June 1946. On 29 September 1950 it was transferred as an Inactive Station from Southern Signals Area to Radio Navigation Aids Wing. It was placed on Care and Maintenance as a 'Rotor' site on 12 December 1950. The GEE Slave station was redesignated No 380 Signals Unit on 1 November 1951. The CH station was redesignated No 620 Signals Unit on 1 November 1951, disbanding on 1 July 1956, with a C & M party being formed the same day. On 14 September 1956 the C & M party was disbanded and RAF West Prawle was transferred from No 11 Group to No 90 Group.
Westburn	Originally commissioned as an Inter Service CD/CHL station under War Office control, it was transferred to the Air Ministry on 20 May 1942 and placed in No 60 Group, under the control of No 71 Wing. By the end of 1942, it was a dual-role station engaged on air reporting and surface watching. It transferred to No 70 Wing on 1 July 1943 and in January 1944 instructions were issued for the Type 2 CHL station to be closed.
Westcliffe	Originally commissioned as an Inter Service CD/CHL station under War Office control, it was transferred to the Air Ministry on 11 March 1942 and placed in No 60 Group, under the control of No 76 Wing. At the end of 1942 it was engaged on air reporting and stand-by surface watching. It was transferred to No 78 Wing on 1 July 1943 and was still operational as a CHL station in October 1945. The CHL station was returned to operational status on 1 June 1949 in Southern Signals Area.
Whalehead	This Type 1 station opened before 1 June 1940, under the control of No 60 Group, parented by No 950 Squadron at Lyness, Orkneys. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 70 Wing, which took over the parenting responsibilities. It was still operational in October 1945, and disbanded on 31 May 1946. In May 1951 it was listed as redundant in No 90 Group, parented by No 1 GRSS, Grangemouth, but from 1 December 1953 this was transferred to RAF Bishopbriggs, until 1 January 1956, following disposal of all Air Ministry assets.
Wherwell	This station was opened in January 1941 in No 60 Group, parented by RAF Middle Wallop.
Whitburn	This had originally commissioned as an Inter Service CD/CHL station known as Marsdon, under War Office control, and was transferred to the Air Ministry on 3 April 1942 and placed in No 60 Group, under the control of No 75 Wing, but had been renamed Whitburn by June 1942. It was again renamed in about August 1942, as Cleadon
Whitstable	This was opened in about June 1940 as a CHL station (02A), under the control of No 60 Group, parented by RAF Manston. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 75 Wing, which took over the parenting responsibilities. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching. A Type 31 Station was opened on 2 April 1945, which was closed on 1 November 1945, and it was still operational as a CHEL (Type 57) station in October 1945. The CHL Station and CD No 1 Mk V Stations were disbanded on 1 June 1946.
Willesborough	This GCI station (04G) commenced formation in late 1940 in No 60 Group, parented by RAF Biggin Hill. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 75 Wing, which took over the parenting responsibilities, however, on 14 April it ceased to be a separate unit being taken onto the establishment of the Biggin Hill Sector, parented by RAF Manston, but in May parenting responsibility was transferred to RAF Hawkinge. By January 1943 it was due to be placed on Care & Maintenance when the station at Sandwich became operational, and was closed on 3 August 1944.
Windyhead	This station opened between July 1941 and July 1942 under the control of No 71 Wing. It transferred to No 70 Wing on 1 July 1943, and disbanded on 31 May 1946. On 25 September 1950 it was transferred as an Inactive Station without equipment to HQ, No 66 Group, Home Command, which was transferred to No 64 Group on 1 February 1957 and then to RAF Kinloss in No 18 Group on 1 July 1957.
Winterton (Blood Hill)	This station opened between July 1942 and July 1943 under the control of No 74 Wing. Originally named Blood Hill, its name was changed to Winterton on ? At the end of 1942 it was available as a stand-by surface watching station only, operating 10cm Mk VI equipment on a 200ft tower and had been allocated high power transmitters. It was transferred to No 73 Wing on 1 July 1943. By October 1945 it was a Type 54 CHEL station on Care & Maintenance (Stage II). On 1 July 1951 it was transferred as an Inactive Station from No 90 Group to No 12 Group, parented by RAF Coltishall, until 24 March 1959 following disposal of all Air Ministry assets.
Worth Matravers/ RAF Renscombe Down	The area around the Dorset village of Worth Matravers was home to a number of radar units, the main one being called Renscombe Down, it consisted of a Chain Home (CH - Station 12) station with two 240ft. wooden masts on 'A-Site' and a Chain Home Low (CHL - Station 12A) station on the cliff top. During the early part of the war these stations were involved in development work under the auspices of the Telecommunications Establishment. This Establishment had been moved to Worth Matravers in May 1940 after firstly being evacuated to Dundee from its original location at Bawdsey Manor in Suffolk, where it was considered to too at risk from German attacks. It was placed in No 60 Group, parented by RAF Warmwell. On 17 February 1941, No 60 Group was split into Wings and it was allocated to No 76 Wing, which took over the parenting responsibilities. Aircraft, for calibration duties were initially operated from Christchuch until facilities at Hurn became available. As the sites around Worth Matravers expanded they began to attract enemy attention and an alternative location was sought, resulting in a moved to Malvern in May 1942. The stations at Renscombe Down continued operation after the radar scientists left and the site was also used for the assembly and training of large numbers of radar and signals units prior to their dispatch overseas. At the end of 1942 it was a dual-role station engaged on air reporting and surface watching. By 1943 there appear to have two separate units in existence, Worth Matravers, as an operational radar site under No 76 Wing (No 78 Wing from 1 July 1943) and RAF Renscombe Down, which concentrated on training and the formation of new units. From 1 November 1943 the CSR 615 equipment at Worth Matravers was employed for GCI and ASR Services in addition to 'Reporting' function. The GCI station was under the control of No 10 Group. After the war, the sites were used by the RAF as a training station. The GEE Slave and Monitor station was redesignated No 407 Signals Unit on 1 November 1951. The domestic site was reduced to inactive status on 1 May 1958, parented by RAF Sopley in No 11 Group.
Wrafton	This GCI station (13G) had opened by April 1941 under the control of No 77 Wing, however, on 14 April it ceased to be a separate unit being taken onto the establishment of the Pembrey Sector. On 1 November 1941 administration of pay, rations and accommodation was transferred to RAF Chivenor, whilst all other administration became the responsibility of Exeter Sector in No 78 Wing. It was initially a Transportable GCI station but was intended to become an Intermediate Transportable and then a Final station, which was due to be achieved by May 1943. By 1 July 1943 it was in the Fairwood Common Sector, parented by RAF Chivenor in No 78 Wing. Type 7 and was still operational as a CGI station in October 1945. It was transferred from Fighter Command to No 90 (Signals) Group on 1 May 1946. The GCI station disbanded in No 78 Wing on 1 June 1946. On 15 August 1950 it was transferred as an Inactive Station from No 90 Group to Transport Command, parented by RAF Chivenor.
Wylfa	This was formed in early 1941 in No 60 Group and by July 1941 under the control of No 77 Wing. It was transferred to No 73 Wing on 15 May 1944. By June 1944 it was a Type 1 station on Care & Maintenance (Stage II), but disbanded on 1 June 1946. In May 1951 it was listed as redundant in Maintenance Command, parented by RAF Llanwrog but was transferred to RAF Valley in No 25 Group on 15 October 1951, which ceased on 10 March 1957 following disposal of all Air Ministry assets..

For details of these stations' status on 31 January 1947 see the Signals Units page.

Stage I - Stations maintained in such a state of readiness that it could return to Operations at 14 days' notice.

Stage II - Stations maintained in such a state of readiness that it might return to Operations at six months' notice.

On 1 December 1949 some units shown above were transferred from No 90 Group to Fighter Command as follows: -

Further transfers from No 90 Group to Fighter Command took place on 17 February 1950 as follows: -

Unit (Establishment Title)	Type	Establishment includes for sites at	Administrative control by	Operationally controlled by SOC	Elements remaining in No 90 Group
RAF Unit, Ringstead	CH	Westcliffe CHL The Verne CHEL	Tangmere	Sopley	-
RAF Unit, Poling	CH	-	Tangmere	Sopley	CHL (C&M) GEE, Truleigh Hill
RAF Unit, Ventnor	CHL (+CMH) CHEL	-	Tangmere	Sopley	CH (C&M) Ventnor
RAF Unit, Rye	CH	Fairlight CHL (+CMH) & CHEL	West Malling	Sopley	CH (C&M) Dunkirk CH (C&M) Pevensey
RAF Unit, Swingate	CHL (+CMH) CHEL	St Margaret's CHEL	West Malling	Trimley Heath	OBOE (C&M) Hawkshill Down GH Swingate
RAF Unit, Bawdsey	CH CHL CHEL	-	Felixstowe	Trimley Heath	No 5 Radio School remained a lodger unit.
RAF Unit, Hopton	CHL (+CMH) CHEL	-	Coltishall	Neatishead	-
RAF Unit, Stoke Holy Cross	CH	-	Coltishall	Neatishead	-
RAF Unit, West Beckham	CHL (+CMH) CHEL	Bard Hill CHL (+CMH)	Coltishall	Neatishead	-
RAF Unit, Stenigot	CH	-	Church Fenton	Patrington	GEE Stenigot