75 (Middlesex) Light Anti-Aircraft Regiment RA(TA) was formed in February 1941 at Ealing, by conversion of 75 Searchlight Regiment. The Regiment was placed in suspended animation in September 1944 and re-constituted as 610 (Middlesex) Light Anti-Aircraft Regiment RA(TA) in January 1947.
| Feb 41 | Formed from 75 Searchlight Regiment | Ealing, London, UK |
| Feb 41 | Home Forces | UK |
| Jun 43 | Middle East Forces | N Africa |
| Jul 43 | 8 Army | Pachino, Sicily |
| Oct 43 | 8 Anti-Aircraft Brigade | Brindisi, Italy |
| Dec 43 | 25 Anti-Aircraft Brigade | Brindisi, Italy |
| Sep 44 | Suspended animation |
Batteries
| Feb 41 | 232, 233, 234 |
| Dec 41 | 233, 234, 303 |
| Feb 42 | 233, 234, 303, 467 |
| Jul 42 | 233, 234, 303 |
