Formed as 8 London Brigade Royal Field Artillery (TF) in February 1920. It became 65 (8th London) Brigade RFA (TF) in 1922. The Brigade was re-designated as 65 (8th London) Field Brigade RA (TA) in June 1924. 65 (8th London) Field Regiment RA (TA) was re-designated from 65 Field Brigade in November 1938 on a two battery basis. In January 1941 it changed to a three battery set up. 65 (8th London) Field Regiment RA (TA) went into suspended animation in June 1945 and reconstituted in January 1947 as 265 (8th London) Heavy Anti-Aircraft Regiment RA (TA).
Illustrations of the formation badges under which a unit served or supported are given. This is no guarantee that the unit used this formations badge.
| 3 Sep 39 |  |
44 (Home Counties) Infantry Division | Lee Green, London, UK |
| 25 Sep 39 | |
44 Infantry Division | Woolwich, London, UK |
| 23 Oct 39 | |
44 Infantry Division | Winterbourne Steepleton, Dorset, UK |
| Apr 40 | |
44 Infantry Division | France |
| Jun 40 | |
44 Infantry Division | UK |
| Jul 42 | |
44 Infantry Division | N Africa |
| Oct 42 | |
44 Infantry Division | Alamein |
| Nov 42 |  |
50 Infantry Division | N Africa |
| Feb 43 | |
50 Infantry Division | Mareth |
| Apr 43 |  |
56 Infantry Division | N Africa |
| Sep 43 | |
56 Infantry Division | Salerno, Italy |
| Apr 44 | |
56 Infantry Division | N Africa |
| Jul 44 | |
56 Infantry Division | Italy |
| Jun 45 | Suspended animation |
Batteries
| 1921 | 257, 258, 259, 260 |
| Nov 38 | 257 (21st London), 258 (22nd London) – 259 & 260 Batteries to 118 Field Regiment |
| Jan 41 | 257, 258, 445 |