Air of Authority - A History of RAF Organisation
No 15 (Reconnaissance) Group (HQ - Plymouth)
| Unit | Location | Notes |
| No 224 Sqn | RAF Aldergrove - Station in RAFNI | Hudsons |
| No 502 Sqn | RAF Aldergrove - Station in RAFNI | Whitleys |
| 1 Flight, No 48 Sqn | RAF Aldergrove - Station in RAFNI | Ansons |
| RAF Station Carew Cheriton | Carew Cheriton, Pembrokeshire | |
| 'B' Flight, No 1 AACU | RAF Carew Cheriton | Henleys |
| 'L' Flight, No 1 AACU | RAF Carew Cheriton | Henleys |
| No 321 (Dutch) Sqn | RAF Carew Cheriton | Ansons |
| Care & Maintenance Party | Falmouth for operational use from time to time by FB detachments | Administered by Mount Batten |
| Embarkation Office | Fowey, administered by Mount Batten | |
| RAF Station Hooton Park | Hooton Park, Cheshire | |
| No 48 Sqn less 2 Flights | RAF Hooton Park | Ansons/Beauforts |
| RAF Station Mount Batten | Plymouth, Devon | |
| No 10 Sqn, RAAF less detachment | RAF Mount Batten | Sunderlands |
| RAF Station Oban | Oban, Argyllshire | |
| No 210 Sqn | RAF Oban | Sunderlands |
| Detachment, No 10 Sqn, RAAF | RAF Oban | Sunderlands |
| RAF Station Pembroke Dock | Pembroke Dock, Pembrokeshire | |
| No 320 (Dutch) Sqn | RAF Pembroke Dock | Fokkers |
| No 209 Sqn | RAF Pembroke Dock | Lerwicks |
| Flying Boat Major Maintenance | RAF Pembroke Dock | Sunderlands |
| RAF Station Port Ellen | Port Ellen, Islay | |
| 1 Flight, No 48 Sqn | RAF Port Ellen | Ansons |
| No 15 Group Communication Flight | RNAS Roborough (FAA Station) | |
| RAF Station St Eval | St Eval, Newquay, Cornwall | |
| No 236 Sqn | RAF St Eval | Blenheims |
| No 217 Sqn | RAF St Eval | Ansons |
| 'B' Flight, PRU | RAF St Eval | Spitfires |
| 'C' Flight, No 2 AACU | RAF St Eval | Battles |
| RAF Station Stranraer | Stranraer, Wigtownshire | |
| No 240 Sqn | RAF Stranraer | Stranraers |
| Flying Boat Training Sqn (No 17 Group unit) | RAF Stranraer | Singapore III |
| Embarkation Office | RAF Stranraer |
No 16 (Reconnaissance) Group (HQ - Chatham)
| Unit | Location | Notes |
| RAF Station Bircham Newton | Bircham Newton, Norfolk | |
| No 206 Sqn | RAF Bircham Newton | Hudsons |
| No 235 Sqn less 1 Flight | RAF Bircham Newton | Blenheims |
| Mobile Torpedo Base | RAF Bircham Newton | |
| RAF Station Detling | Detling, Kent | |
| No 53 Sqn | RAF Detling | Blenheims |
| No 500 Sqn | RAF Detling | Ansons |
| No 1 Coastal Artillery Co-operation Unit (No 17 Group unit) | RAF Detling | Ansons |
| Care & Maintenance | RAF Felixstowe | |
| RAF Station Heston (under HQ Coastal Command) | Heston, Middlesex | |
| Photographic Reconnaissance Unit | RAF Heston | Various |
| RAF Station North Coates | North Coates Fitties, Lincolnshire | |
| No 22 Sqn | RAF North Coates | Beauforts |
| Mobile Torpedo Base | RAF North Coates | |
| Care & Maintenance | RAF Eastchurch | |
| No 16 Group Communication Flight | Rochester (Civil) | |
| RAF Station Thorney Island | Thorney Island, Hampshire | |
| No 59 Sqn | RAF Thorney Island | Blenheims |
| 1 Flight, No 235 Sqn | RAF Thorney Island | Blenheims |
| Interpretation Section, PRU (Administered by Heston) | Wembley |
No 17 (Training) Group (HQ - Gosport)
| Unit | Location | Notes |
| RAF Station Abbotsinch | Abbotsinch, Renfrewshire | |
| Torpedo Training Unit | RAF Abbotsinch | |
| RAF Station Calshot | Calshot Spit, Hampshire | |
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| RAF Station Catfoss | Catfoss, Hornsea, East Riding of Yorkshire | |
| No 2 (Coastal) Operational Training Unit | RAF Catfoss | Blenheims/Ansons |
| Embarkation Office | Glasgow | Administered by Abbotsinch |
| RAF Station Gosport | Gosport, Hampshire | |
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| RAF Station Greenock | Greenock, Renfrewshire | |
| Flying Boat Major Maintenance | RAF Greenock | |
| RAF Station Silloth | Silloth, Cumberland | |
| Detachment, No 1 (C) OTU | RAF Prestwick - Station in Flying Training Command | Blenheims |
| No 1 (Coastal) Operational Training Unit less detachment | RAF Silloth | Various |
| Embarkation Office | Southampton | Administered by Calshot |
| RAF Station Squires Gate | Squires Gate, Blackpool, Lancashire | |
| No 1 School of General Reconnaissance | RAF Squires Gate | Ansons |
| No 2 School of General Reconnaissance | RAF Squires Gate | Ansons |
| 'F' Flight, No 1 AACU | RAF Squires Gate | Henleys |
No 18 (Reconnaissance) Group (HQ - Pitreavie Castle)
| Unit | Location | Notes |
| Embarkation Office | Aberdeen | Administered by Dyce |
| RAF Station Dyce | Dyce, Aberdeen | |
| No 612 Sqn less 1 Flight | RAF Dyce | Ansons |
| No 254 Sqn | RAF Dyce | Blenheims |
| RAF Station Helensburgh | Helensburgh, Dunbartonshire | |
| Marine Aircraft Experimental Establishment | RAF Helenburgh | Various |
| RAF Station Invergordon | Invergordon, Ross & Cromerty | |
| RAF Station Kaldadarnes | Kaldadarnes, Iceland | |
| No 98 Sqn | RAF Kaldadarnes | Battles |
| Embarkation Office | Lerwick | Administered by Sullom Voe |
| RAF Station Leuchars | Leuchars, Fife | |
| No 233 Sqn | RAF Leuchars | Hudsons |
| No 18 Group Communications Flight | RAF Leuchars | Various |
| 1 Flight, No 612 Sqn | Stornoway | Ansons |
| RAF Station Sullom Voe | Shetlands | |
| No 201 Sqn | RAF Sullom Voe | Sunderlands |
| No 204 Sqn | RAF Sullom Voe | Sunderlands |
| RAF Floating Dock | RAF Sullom Voe | |
| RAF Station Sumburgh | Shetlands | |
| No 248 Sqn | RAF Sumburgh | Blenheims |
| RAF Station Thornaby | Thornaby, North Riding of Yorkshire | |
| No 608 Sqn | RAF Thornaby | Ansons |
| No 220 Sqn | RAF Thornaby | Hudsons |
| RAF Station Wick | Wick, Caithness | |
| No 269 Sqn | RAF Wick | Hudsons |
| No 42 Sqn | RAF Wick | Beauforts |
| 'A' Flight, PRU | RAF Wick |
| Unit | Location | Notes |
| No 202 Sqn | Gibraltar | Londons |
| 1 Flight, No 3 AACU | Gibraltar | Swordfish/Queen Bees |
Source - SD161 (5th Issue), August 1940
County names used are those in use at the time
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