54 (City of London) Heavy Anti-Aircraft Regiment RA (TA) was re-designated as 54 (City of London) Anti-Aircraft Regiment RA (TA) from 54 Anti-Aircraft Brigade RA (TA) in January 1939. It was re-designated as Heavy Anti-Aircraft in June 1940. The Regiment sreved in Anti-Aircraft Command until moving to Ceylon (Sri Lanka) in September 1942. In May 1943 it moved to the Middle East for the remainder of the war. 54 (City of London) Heavy Anti-Aircraft Regiment RA (TA) was placed in suspended animation in February 1945 and reconstituted as 454 (City of London) Heavy Anti-Aircraft Regiment RA (TA) in January 1947.
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.
| Sep 39 |  |
1 Anti-Aircraft Division, 48 Anti-Aircraft Brigade | London, UK |
| Sep 42 |  |
Ceylon Command, 1 Anti-Aircraft Brigade Royal Marines 162 Battery to East Africa Command |
Ceylon (Sri Lanka) |
| Oct 42 | |
Ceylon Command, 23 Anti-Aircraft Brigade | Ceylon (Sri Lanka) |
| Feb 43 | |
Ceylon Command, 24 Anti-Aircraft Brigade | Ceylon (Sri Lanka) |
| May 43 |  |
Middle East Forces, 8 Anti-Aircraft Brigade 312 Battery under command 89 HAA Rgt, Benghazi |
Tahag, Egypt |
| Jan 44 | |
Middle East Forces, 17 Anti-Aircraft Brigade | Tripolitania, Libya |
| Jun 44 | |
Middle East Forces, 17 Anti-Aircraft Brigade | Suez Canal, Egypt |
| Feb 45 | Suspended animation |
Batteries
| Sep 39 | 160, 161, 162 |
| May 40 | 160, 161, 162, 312 |
| Aug 41 | 160, 161, 312, 428 |
| Dec 41 | 160, 161, 312 |
Gun Sites Occupied
160 Battery
| Dates | Gun Site | Gun Defended Area |
| May 40 | ZS6 Welling | London IAZ |
161 Battery
| Dates | Gun Site | Gun Defended Area |
| May 40 | ZS8 Woolwich Common | London IAZ |
162 Battery
| Dates | Gun Site | Gun Defended Area |
| 15 May 40 | ZS7 Eltham | London IAZ |
312 Battery
| Dates | Gun Site | Gun Defended Area |
| 1-15 May 40 |
ZS14 Dulwich ZS16 Clapham Junction |
London IAZ |