71 (East Lancashire) Searchlight Regiment RA(TA) formed in November 1938 at Manchester, with three batteries. The Regiment was reduced to a cadre in May 1943 and considered to have lapsed in to suspended animation in March 1944. It was re-constituted as 606 (East Lancashire) (Mixed) Heavy Anti-Aircraft Regiment RA(TA) in January 1947.
| Nov 38 | 44 Anti-Aircraft Brigade, 4 Anti-Aircraft Division | Manchester, UK |
| 1940 | 53 Light Anti-Aircraft Brigade | North Midlands, UK |
| Apr 43 | 5 Anti-Aircraft Brigade | South Coast England |
| Sep 43 | Reduced to a cadre | |
| Mar 44 | Suspended animation |
Batteries
| Nov 38 | 462, 463, 464 |
| Nov 40 | 462, 463, 464, 516 |
| Mar 42 | 462, 463, 464 |
