| Group | Squadron | Base | County | Arrived | Comments |
|---|---|---|---|---|---|
| 4 | 51 | Linton-on-Ouse | Yorkshire | 03/09/39 | Whitley II, 02/38. Whitley III, 08/39. Whitley IV, 11/39. To Coastal Command, 24/11/39 |
| 4 | 51 | Dishforth | Yorkshire | 09/12/39 | Ex-Coastal Command. Whitley V, 05/40. To Coastal Command, 06/05/42. |
| 4 | 51 | Snaith | Yorkshire | 27/10/42 | Ex Coastal Command. Halifax II, 11/42. Halifax III, 01/44. |
| 4 | 51 | Leconfield | Yorkshire | 20/04/45 | To Transport Command, 05/45. |