Appendix 7: Equipment and Location of British Fighter Squadrons, 9th July 1940
| Squadron | Equipment | War Station | |
| NO. 10 GROUP, RUDLOE, NR. BATH (Air Vice-Marshal Sir Quintin Brand) | |||
| Pembrey Sector | |||
| 92 | Spitfire | Pembrey | |
| Filton Sector | |||
| 87 | Hurricane | Exeter | |
| 213 | Hurricane | Exeter | |
| St. Eval Sector | |||
| 234 | Spitfire | St. Eval | |
| NO. 11 GROUP, UXBRIDGE (Air Vice-Marshal K. R. Park) | |||
| Middle Wallop Sector | |||
| 609 | (West Riding) | Spitfire | Middle Wallop |
| 238 | Hurricane Warmwell | ||
| 501 | (County of Gloucester) | Hurricane | Warmwell |
| Tangmere Sector | |||
| 43 | Hurricane | Tangmere | |
| 145 | Hurricane | Tangmere | |
| 601 | (County of London) | Hurricane | Tangmere |
| Kenley Sector | |||
| 64 | Spitfire | Kenley | |
| 615 | (Auxiliary) | Hurricane | Kenley |
| 111 | Hurricane | Croydon | |
| Biggin Hill Sector | |||
| 32 | Hurricane | Biggin Hill | |
| 610 | (County of Chester) | Spitfire | Biggin Hill |
| 79 | Hurricane | Hawkinge | |
| 604 | (County of Middlesex) | Blenheim | Gravesend |
| Hornchurch Sector | |||
| 65 | Spitfire | Hornchurch | |
| 74 | Spitfire | Hornchurch | |
| 600 | (City of London) | Blenheim | Manston |
| 54 | Spitfire | Rochford | |
| Northolt Sector | |||
| 1 | Hurricane | Northolt | |
| 257 | Hurricane | Northolt | |
| North Weald Sector | |||
| 56 | Hurricane | North Weald | |
| 151 | Hurricane | North Weald | |
| 25 | Blenheim | Martlesham Heath | |
| NO. 12 GROUP, WATNALL, NR. NOTTINGHAM (Air Vice-Marshal T. L. Leigh-Mallory) | |||
| Debden Sector | |||
| 85 | Hurricane | Debden | |
| 17 | Hurricane | Debden | |
| Duxford Sector | |||
| 19 | Spitfire | Duxford | |
| 264 | Defiant | Duxford | |
| Coltishall Sector | |||
| 66 | Spitfire | Coltishall | |
| 242 | Hurricane | Coltishall | |
| Wittering Sector | |||
| 266 | Spitfire | Wittering | |
| 229 | Hurricane | Wittering | |
| 23 | Blenheim | Wittering | |
| Digby Sector | |||
| 611 | (West Lancashire) | Spitfire | Digby |
| 46 | Hurricane | Digby | |
| 29 | Blenheim | Digby | |
| Kirton-in-Lindsey Sector | |||
| 222 | Spitfire | Kirton-in-Lindsey | |
| 253 | Hurricane | Kirton-in-Lindsey | |
| NO. 13 GROUP, NEWCASTLE-ON-TYNE (Air Vice-Marshal R. E. Saul) | |||
| Church Fenton Sector | |||
| 73 | Hurricane | Church Fenton | |
| 616 | (South Yorkshire) | Spitfire | Leconfield |
| 249 | Hurricane | Leconfield | |
| Catterick Sector | |||
| 41 | Spitfire Catterick | ||
| 219 | Blenheim | Catterick | |
| Usworth Sector | |||
| 72 | Spitfire | Acklington | |
| 152 | Spitfire | Acklington | |
| Turnhouse Sector | |||
| 245 | Hurricane | Turnhouse | |
| 603 | (City of Edinburgh) | Spitfire | Turnhouse and Montrose |
| I41 | Defiant Turnhouse | ||
| 602 | (City of Glasgow) | Spitfire | Drem |
| 605 | (County of Warwick) | Hurricane | Drem |
| Wick Sector | |||
| 3 | Hurricane Wick | ||
| 504 | (County of Nottingham) | Hurricane | Wick |
| NON-OPERATIONAL SQUADRONS (Forming or re-equipping) | |||
| 238 | Hurricane | Middle Wallop | |
| 1 | (Royal Canadian Air Force) | Hurricane | Middle Wallop |
| 607 | (Auxiliary) | Hurricane | Usworth |
| 263 | Hurricane | Grangemouth | |
NOTE: The normal establishment of a fighter squadron comprised 26 pilots, an initial equipment of sixteen aircraft, and a small immediate reserve (usually from three to five aircraft). When operating as a tactical formation a squadron flew normally at a strength of twelve aircraft. Alternatively a squadron might operate as two flights each of six aircraft, or as four sections each of three aircraft. As an emergency measure four aircraft were added to the establishment of each of 30 Hurricane and six Spitfire squadrons in the early summer of 1940. In theory this should have enabled each of the augmented squadrons to put an additional section into the air at moments of crisis; in practice their ability to do so was governed by the supply of pilots.