125 (Cameronians) Light Anti-Aircraft Regiment RA (TA) was converted in February 1942 from 56 Searchlight Regiment. The Regiment 125 (Cameronians) Light Anti-Aircraft Regiment RA (TA) was placed in suspended animation in March 1946 and re-constituted as 591 (Cameronians) 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.
| Feb 42 | Formed from 56 Searchlight Regiment | ||
| Feb 42 | Home Forces | UK | |
| Jun 42 |  |
6 Anti-Aircraft Division, 6 Anti-Aircraft Brigade | South East England |
| Dec 42 |  |
2 Anti-Aircraft Group, 27 Anti-Aircraft Brigade | UK |
| Jun 43 |  |
21 Army Group, 76 Anti-Aircraft Brigade | Toft Hall, Cheshire, UK |
| Jan 44 | |
21 Army Group, 76 Anti-Aircraft Brigade | Southend, Essex, UK |
| 9 Jun 44 | |
21 Army Group, 76 Anti-Aircraft Brigade | Normandy, France |
| Sep 44 | |
21 Army Group, 80 Anti-Aircraft Brigade | Les Andelys, France |
| Sep 44 | |
21 Army Group, 76 Anti-Aircraft Brigade | Amiens, France |
| Oct 44 | |
21 Army Group, 107 Anti-Aircraft Brigade | Dunkirk, France |
| Nov 44 | |
21 Army Group, 76 Anti-Aircraft Brigade | Kapelle, Holland |
| Jun 45 | Occupation duties | Dortmund, Germany |
Batteries
| Feb 42 | 414, 417, 418, 419 |
| Oct 42 | 417, 418, 419 |