75 (Middlesex) Searchlight Regiment RA(TA) formed in May 1939 at Cowley, Uxbridge. The Regiment converted to 75 Light Anti-Aircraft Regiment in February 1941 (initially numbered 73). It was re-constituted as 610 (Middlesex) Light Anti-Aircraft Regiment RA(TA) in January 1947.
| May 39 | 38 Light Anti-Aircraft Brigade, 1 Anti-Aircraft Division | Uxbridge, London, UK |
| Feb 41 | Became 75 Light Anti-Aircraft Regiment |
Batteries
| May 39 | 470, 471, 472, 473 |
