| Group | Squadron | Base | County | Arrived | Comments |
|---|---|---|---|---|---|
| 5OTU | Aston Down | Gloucestershire | 15/03/40 | From 12 Group Pool. Harvard IIb, Gladiator, Blenheim I, Spitfire, Hurricane I, Hurricane II, Defiant I, Battle, Master I, Master II, Master III. Became No. 55 OTU, 01/11/40. |