| Group | Squadron | Base | County | Arrived | Comments |
|---|---|---|---|---|---|
| 4 | 10 | Dishforth | Yorkshire | 03/09/39 | Whitley IV, 05/39. Whitley V, 05/40. |
| 4 | 10 | Leeming | Yorkshire | 08/07/40 | Halifax I, 12/41. Halifax II, 12/41. |
| 4 | 10 | Melbourne | Yorkshire | 19/08/42 | Halifax III, 03/44. To Transport Command, 05/45. |