86 Searchlight Regiment RA(TA) was formed in January 1941 with three batteries, at Kilmarnock. It was converted to 120 Light Anti-Aircraft Regiment in January 1942.
| Jan 41 | Formed | Kilmarnock, Ayrshire, UK |
| Jan 41 | 63 Anti-Aircraft Brigade, 12 Anti-Aircraft Division | Ayr, Ayrhire, UK |
| Jan 42 | Became 120 Light Anti-Aircraft Regiment |
Batteries
| Jan 41 | 526, 527, 528 |
