86 Light Anti-Aircraft Regiment RA (TA) was formed in September 1941 at Holyport with three batteries. The Regiment Moved to the Middle East in September 1942 serving in Libya and Egypt until disbanded. 86 Light Anti-Aircraft Regiment RA (TA) was disbanded in June 1944 in the Middle East.
Illustrations of the formation badges under which a unit served or supported are given. This is no guarantee that the unit used this formations badge.
| 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 |