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 was placed in suspended animation in February 1945 and reconstituted as 454 (City of London) Heavy Anti-Aircraft Regiment RA(TA) in January 1947.
| Sep 39 | 48 Anti-Aircraft Brigade, 1 Anti-Aircraft Division | London, UK |
| Sep 42 | 1 Anti-Aircraft Brigade Royal Marines 162 Battery to East Africa Command |
Ceylon (Sri Lanka) |
| Oct 42 | 23 Anti-Aircraft Brigade | Ceylon (Sri Lanka) |
| Feb 43 | 24 Anti-Aircraft Brigade | Ceylon (Sri Lanka) |
| May 43 | 8 Anti-Aircraft Brigade, Middle East Forces 312 Battery under command 89 HAA Rgt, Benghazi |
Tahag, Egypt |
| Jan 44 | 17 Anti-Aircraft Brigade | Tripolitania, Libya |
| Jun 44 | 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 |
