54 (Durham Light Infantry) Searchlight Regiment RA(TA) formed in August 1940 by the transfer of 1/5th Battalion The Durham Light Infantry (54 Searchlight Regiment) (TA) to the RA. The Regiment was placed in suspended animation in February 1946. It was re-constituted as 589 (The Durham Light Infantry) (Mixed) Light Anti-Aircraft/Searchlight Regiment RA(TA) in January 1947.
| Nov 38 | 1/5th Battalion Durham Light Infantry (54 Searchlight Regiment) |
Stockton on Tees, Co Durham, UK |
| Aug 40 | Became RA – 43 Anti-Aircraft Brigade, 7 Anti-Aircraft Division |
Teeside, UK |
| Aug 40 | 31 Anti-Aircraft Brigade | West Yorkshire, UK |
| Nov 40 | 31 Anti-Aircraft Brigade, 10 Anti-Aircraft Division | West Yorkshire, UK |
| Sep 42 | 31 Anti-Aircraft Brigade, 5 Anti-Aircraft Group | Yorkshire, UK |
| Jun 44 | 31 Anti-Aircraft Brigade, 21 Army Group | Shaftesbury, Dorset, UK |
| Nov 44 | 101 Anti-Aircraft Brigade | Brussels, Belgium |
| Dec 44 | 5 Royal Marine Anti-Aircraft Brigade | Antwerp, Belgium |
Batteries
| Aug 40 | 411, 412, 413 |
