85 Light Anti-Aircraft Regiment RA (TA) was formed in September 1941 at the RA Depot, Woolwich with two batteries. It went to Iceland as part of Alabaster Force in October 1941. On its return to the UK it served with Anti-Aircraft Command. 85 Light Anti-Aircraft Regiment RA (TA) was disbanded in January 1945 at Lyndhurst, Hampshire.
| Sep 41 | Formed from batteries from 12 Heavy & 44 Light Anti-Aircraft Regiments | Woolwich, London, UK | |
| Sep 41 | Home Forces | UK | |
| Oct 41 |  |
Alabaster Force | Iceland |
| Jul 42 | Home Forces | UK | |
| Nov 42 |  |
5 Anti-Aircraft Group, 41 Anti-Aircraft Brigade | UK |
| Feb 43 | Home Forces, unbrigaded | UK | |
| Nov 43 | |
6 Anti-Aircraft Group, 36 Anti-Aircraft Brigade | UK |
| Mar 44 | |
6 Anti-Aircraft Group, 5 Anti-Aircraft Brigade | Portsmouth, UK |
| Nov 44 | Home Forces | UK | |
| May 45 | Disbanded | Lyndhurst, Hampshire, UK |
Batteries
| Sep 41 | 52, 77 |
| Oct 42 | 52, 77, 136 |
| Jun 43 | 52, 304, 420 |
| Jul 43 | 52, 56, 304 |
| May 44 | 52, 201, 304, 448 |