86 Light Anti-Aircraft Regiment RA(TA) was formed in September 1941 at Holyport with three batteries. The Regiment was disbanded in June 1944 in the Middle East.
| Sep 41 | Formed from batteries from 28, 46 & 81 Light Anti-Aircraft Regiments |
Holyport, Berkshire, UK |
| Sep 41 | Home Forces | UK |
| Sep 42 | Middle East Forces | N Africa |
| May 43 | 1 Anti-Aircraft Brigade | Benghazi, Libya |
| Jun 44 | 18 Anti-Aircraft Brigade | Alexandria, Egypt |
| Jun 44 | Disbanded |
Batteries
| Sep 41 | 53, 119, 281 |
| Feb 42 | 53, 119, 281, 475 |
| May 42 | 119, 281, 452 |
