| Group | Squadron | Base | County | Arrived | Comments |
|---|---|---|---|---|---|
| 13 | 315 | Acklington | Northumberland | 21/01/41 | Formed. Hurricane I, 02/41. |
| 9 | 315 | Speke | Lancashire | 13/03/41 | |
| 11 | 315 | Northolt | Middlesex | 14/07/41 | Spitfire IIa, 07/41. Spitfire IIb, 07/41. Spitfire Vb, 08/41. |
| 9 | 315 | Woodvale | Lancashire | 01/04/42 | |
| 11 | 315 | Northolt | Middlesex | 05/09/42 | Spitfire IX, 11/42. |
| 12 | 315 | Hutton Cranswick | Yorkshire | 02/06/43 | |
| 82 | 315 | Ballyhalbert | County Down | 06/07/43 | |
| 11 | 315 | Heston | Middlesex | 13/11/43 | Mustang III, 03/44. |
| 2TAF | 315 | Coolham | Sussex | 01/04/44 | |
| 2TAF | 315 | Holmsley South | Hampshire | 22/06/44 | |
| 2TAF | 315 | Ford | Sussex | 25/06/44 | |
| 2TAF | 315 | Brenzett | Kent | 10/07/44 | |
| 11 | 315 | Andrew's Field | Essex | 10/10/44 | |
| 12 | 315 | Coltishall | Norfolk | 24/10/44 | |
| 14 | 315 | Peterhead | Aberdeenshire | 01/11/44 | |
| 11 | 315 | Andrew's Field | Essex | 16/01/45 |