| Group | Squadron | Base | County | Arrived | Comments |
|---|---|---|---|---|---|
| 3 | 215 | Honington | Suffolk | 03/09/39 | Harrow, 08/37. Wellington I, 07/39. |
| 3 | 215 | Bramcote | Warwickshire | 10/09/39 | |
| 3 | 215 | Bassingbourn | Cambridgeshire | 24/09/39 | Anson I, 01/40. Became No.11 OTU, 08/04/40. |
| 3 | 215 | Newmarket | Cambridgeshire | 09/12/41 | Reformed. |
| 3 | 215 | Stradishall | Suffolk | 05/01/42 | To Far East, 12/02/42. |