25 Light Anti-Aircraft Regiment RA (TA) was formed at Liverpool, in June 1939. The Regiment moved to North Africa in March 1941. It returned to the UK a year later to prepare for D Day, moving to France in December 1944. It was placed in suspended animation in February 1946. 25 Light Anti-Aircraft Regiment RA (TA) re-constituted as 525 Light Anti-Aircraft/Searchlight 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.
| Jun 39 |  |
Western Command | Liverpool, Merseyside, UK |
| Aug 39 |  |
4 Anti-Aircraft Division, 53 Anti-Aircraft Brigade | North West England |
| Mar 41 |  |
British Troops Egypt, 2 Anti-Aircrfat Brigade | Suez Canal North, Egypt |
| Oct 41 |  |
8 Army, 12 Anti-Aircraft Brigade | N Africa |
| Dec 42 |  |
50 Infantry Division | Egypt |
| Mar 43 | |
50 Infantry Division | Mareth Line, Tunisia |
| May 43 | |
50 Infantry Division | Tunis, Tunisia |
| July 43 | |
50 Infantry Division | Sicily |
| Nov 43 | |
50 Infantry Division | UK |
| June 44 | |
50 Infantry Division | Normandy, France |
| Sep 44 | |
50 Infantry Division | Arras, France |
| Sep 44 | |
50 Infantry Division | Nijmegen, Holland |
| Dec 44 |  |
53 Infantry Division | Ardennes, Belgium |
| Feb 45 | |
53 Infantry Division | Reichswald, Germany |
| May 45 | |
53 Infantry Division | Hamburg, Germany |
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 |