25 Light Anti-Aircraft Regiment RA(TA) was formed at Liverpool, in June 1939. It was placed in suspended animation in February 1946. The unit re-constituted as 525 Light Anti-Aircraft/Searchlight Regiment RA(TA) in January 1947.
| Sep 39 | Western Command | Liverpool, Merseyside, UK |
| Mar 41 | British Troops Egypt | N Africa |
| Oct 41 | 8 Army | N Africa |
| May 42 | Home Forces | UK |
| Dec 44 | 53 Infantry Division | NW Europe |
Batteries
| Sep 39 | 81, 82, 225 (27th West Lancashire) |
| Mar 41 | 81, 82, 274 (Northumberland Hussars) |
| Sep 42 | 81 (reduced to cadre), 82, 274 |
| Sep 43 | 81 (cadre), 82, 138, 274 |
| Mar 44 | 82, 138, 274 |
