Air of Authority - A History of RAF Organisation
No 2 (Bomber) Group (HQ - Huntingdon)
| Unit | Location/Administered by |
| RAF Station Wattisham (No 83 Wing) | Wattisham, Suffolk |
| No 107 (Bomber) Sqn (O) | RAF Wattisham |
| No 110 (Bomber) Sqn (O) | RAF Wattisham |
| RAF Station Watton (No 79 Wing) | Watton, Norfolk |
| No 21 (Bomber) Sqn (O) | RAF Watton |
| No 82 (Bomber) Sqn (O) | RAF Watton |
| RAF Station West Raynham | West Raynham, Norfolk |
| No 101 (Bomber) Sqn (R) | RAF West Raynham |
| RAF Station Wyton (No 82 Wing) | Wyton, Huntingdonshire |
| No 15 (Bomber) Sqn (O) | RAF Wyton |
| No 40 (Bomber) Sqn (O) | RAF Wyton |
All squadrons equipped with Blenheims
(O) = Operational Squadron
The following changes to the above took place before the issue of the next SD161
| Change | Note |
| The Wing designations were deleted | AL5, 25 Mar 1940 |
No 3 (Bomber) Group (HQ - Mildenhall)
| Unit | Location/Administered by |
| RAF Station Feltwell | Feltwell, Norfolk |
| No 37 (Bomber) Sqn (O) | RAF Feltwell |
| No 214 (Bomber) Sqn (R) | RAF Feltwell |
| RAF Station Honington | Honington, Suffolk |
| No 9 (Bomber) Sqn (O) | RAF Honington |
| RAF Station Marham | Marham, Norfolk |
| No 38 (Bomber) Sqn (O) | RAF Marham |
| No 115 (Bomber) Sqn (O) | RAF Marham |
| RAF Station Mildenhall | Mildenhall, Suffolk |
| No 99 (Bomber) Sqn (O) | RAF Mildenhall |
| No 149 (Bomber) Sqn (O) | RAF Mildenhall |
| RAF Station Stradishall | Stradishall, Suffolk |
| New Zealand Flight | RAF Stradishall |
All squadrons equipped with Wellingtons
(O) = Operational Squadron
(R) = Reserve Squadron
The following changes to the above took place before the issue of the next SD161
| Change | Note |
| No 214 Sqn moved to RAF Stradishall from Feltwell | AL2, Feb 1940 |
| New Zealand Flight moved to RAF Feltwell from Stradishall | AL2, Feb 1940 |
No 4 (Bomber) Group (HQ - Linton-on-Ouse)
| Unit | Location/Administered by |
| No 58 (Bomber) Sqn (O) | RAF Boscombe Down (Station in Training Command) |
| RAF Station Dishforth | Dishforth, North Riding of Yorkshire |
| No 10 (Bomber) Sqn (O) | RAF Dishforth |
| No 51 (Bomber) Sqn (R) | RAF Dishforth |
| RAF Station Driffield | Driffield, East Riding of Yorkshire |
| No 77 (Bomber) Sqn (O) | RAF Driffield |
| No 102 (Bomber) Sqn (O) | RAF Driffield |
| RAF Station Linton-on-Ouse | Linton-on-Ouse, North Riding of Yorkshire |
| No 78 (Bomber) Sqn (O) | RAF Linton-on-Ouse |
All squadrons equipped with Whitleys
(O) = Operational Squadrons
(R) = Reserve Squadron
The following changes to the above took place before the issue of the next SD161
| Change | Note |
| No 51 Sqn at Dishforth changed from (R) to (O) | AL1, 25 Jan 1940 |
| No 78 Sqn at Linton-on-Ouse changed from (O) to (R) | AL1, 25 Jan 1940 |
| No 58 Sqn moved from Boscombe Down to Linton-on-Ouse | AL3, 12 Feb 1940 |
No 5 (Bomber) Group (HQ - 'St Vincents', Grantham)
| Unit | Location/Administered by |
| RAF Station Finningley | Finningley, West Riding of Yorkshire |
| No 106 (Bomber) Sqn (R) | RAF Finningley |
| RAF Station Hemswell | Hemswell, Lincolnshire |
| No 61 (Bomber) Sqn (O) | RAF Hemswell |
| No 144 (Bomber) Sqn (O) | RAF Hemswell |
| RAF Station Scampton | Scampton, Lincolnshire |
| No 49 (Bomber) Sqn (O) | RAF Scampton |
| No 83 (Bomber) Sqn (O) | RAF Scampton |
| RAF Station Waddington | Waddington, Lincolnshire |
| No 44 (Bomber) Sqn (O) | RAF Waddington |
| No 50 (Bomber) Sqn (O) | RAF Waddington |
All squadrons equipped with Hampdens
(O) = Operational Squadrons
(R) = Reserve Squadron
(GP) = Group Pool Squadron
The following changes to the above took place before the issue of the next SD161
| Change | Note |
| No 98 Sqn (R) moved from No 6 Group to RAF Scampton | AL4, 12 Mar 1940 |
No 6 (Auxiliary) Group (HQ - Norwich)
| Unit | Location |
| RAF Station Abingdon | Abingdon, Berkshire |
| No 97 (Bomber) Sqn (GP) - Whitleys | RAF Abingdon |
| No 166 (Bomber) Sqn (GP) - Whitleys | RAF Abingdon |
| Code & Cypher School | Oxford, administered by RAF Abingdon |
| RAF Station Bassingbourn | Bassingbourn, Cambridgeshire |
| No 215 (Bomber) Sqn (GP) - Wellingtons | RAF Bassingbourn |
| No 35 Sqn (Aircraft and crews) - Blenheims | RAF Bassingbourn |
| RAF Station Benson | Benson, Oxfordshire |
| No 52 (Bomber) Sqn (GP) - Battles | RAF Benson |
| No 63 (Bomber) Sqn (GP) - Battles | RAF Benson |
| Kings Flight - Various | RAF Benson |
| RAF Station Bicester | Bicester, Oxfordshire |
| No 104 (Bomber) Sqn (GP) - Blenheims | RAF Bicester |
| No 108 (Bomber) Sqn (GP) - Blenheims | RAF Bicester |
| RAF Station Cottesmore | Cottesmore, Rutland |
| No 185 (Bomber) Sqn (GP) | RAF Cottesmore |
| No 207 (Bomber) Sqn (Aircraft and crews) (Battles) | RAF Cottesmore |
| RAF Station Cranfield | Cranfield, Bedfordshire |
| No 35 (Bomber) Sqn (GP) - Ground crew | RAF Cranfield |
| No 207 (Bomber) Sqn (GP) - Ground crew | RAF Cranfield |
| RAF Station Harwell | Harwell, Oxfordshire |
| No 75 (Bomber) Sqn (GP) - Wellingtons | RAF Harwell |
| No 148 (Bomber) Sqn (GP) - Wellingtons | RAF Harwell |
| No 98 (Bomber) Sqn (R) - Battles | RAF Hucknall, Station in Fighter Command |
| No 1 Ferry Pilots' Pool (Maintenance Command) | RAF Hucknall, Station in Fighter Command |
| RAF Station Upwood | Upwood, Huntingdonshire |
| RAF Station Upper Heyford | Upper Heyford, Oxfordshire |
| No 7 (Bomber) Sqn (GP) - Hampdens | RAF Upper Heyford |
| No 76 (Bomber) Sqn (GP) - Hampdens | RAF Upper Heyford |
| RAF Station Upwood | Upwood, Norfolk |
| No 90 (Bomber) Sqn (GP) - Blenheims | RAF West Raynham |
(R) = Reserve Squadron
(GP) = Group Pool Squadron
Source - SD161 (2nd Issue), January 1940
The following changes to the above took place before the issue of the next SD161
| Change | Note |
| No 35 Sqn (GP) (Blenheims) was reunited at RAF Upwood | AL2, Feb 1940 |
| No 98 Sqn (R) moved to RAF Scampton from No 6 Group | AL4, 12 Mar 1940 |
| RAF Hucknall was transferred to Bomber Command | AL5, 25 Mar 1940 |
County names used are those in use at the time
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