| 25 Squadron Hawkinge, June 1938 to September 1938. Northolt, September 1938 to October 1938. Hawkinge, October 1939 to February 1939. Code letters: "ZK". |
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| Serials | Code | Arrival | Note | Departure |
| K6147 | 23/06/38 From 56 Sq. | 30/12/38 To 607 Sq. | ||
| K6149 | 23/06/38 From 56 Sq. | 05/01/39 To 607 Sq. | ||
| K7961 | 23/07/38 From 56 Sq. | 23/02/39 To 65 Sq. | ||
| K7982 | 22/06/38 From 56 Sq. | 10/01/39 To 607 Sq. | ||
| K7983 | 28/06/38 From 65 Sq. | 30/12/39 To 607 Sq. | ||
| K7988 | 21/06/38 From 56 Sq. | 12/01/39 To 607 Sq. | ||
| K7989 | 22/06/38 From 56 Sq. | 12/01/39 To 607 Sq. | ||
| K7992 | 29/06/38 From 56 Sq. | 05/01/39 To 607 Sq. | ||
| K7995 | 23/06/38 From 56 Sq. | 05/01/39 To 607 Sq. | ||
| K7996 | 25/06/38 From 65 Sq. | 10/01/39 To 607 Sq. | ||
| K7997 | 28/06/38 From 65 Sq. | 13/02/39 To 607 Sq. | ||
| K7998 | 28/06/38 From 65 Sq. | 03/01/39 Ran short of fuel on ferry flight; hit tree in forced landing, Great Corby, Cumberland. | 13/02/39 Wreck to 607 Sq. | |
| K7999 | 28/06/38 From 65 Sq. | 05/01/39 To 607 Sq. | ||
| K8020 | 24/06/38 From 56 Sq. | 30/12/38 To 607 Sq. | ||
| K8030 | 21/06/38 From 56 Sq. | 30/12/38 To 607 Sq. | ||
| N5902 | From 263 Sq. | Used by the squadron, at least for non-operational flights, in 1939. | To Northolt Station Flight. | |
Gloster Gladiator in Commonwealth squadron service
