64 Anti-Aircraft Brigade was formed in February 1940 in the newly raised 8 Anti-Aircraft Division based at Bristol. The Brigade was a Light Anti-Aircraft and Searchlight Brigade tasked with airfield defence. 64 Anti-Aircraft Brigade left the Division in August 1942. The Brigade was disbanded in 1944.
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.
| Feb 40 | Formed | | |
| Feb 40 | Airfields |  | 8 Anti-Aircraft Division |
| Aug 42 | Left 8 AA Division | | Unknown |
| 1944 | Disbanded | | |
Order of Battle 1940
| 35 Light Anti-Aircraft Regiment (78, 89, 90, 144 Batteries) |
| 2 Searchlight Regiment (4, 5, 6, 475 Batteries) |
| 3 (Ulster) Searchlight Regiment (9, 10, 11, 12 Batteries) – Converted to LAA Jan 42 |
| 76 Searchlight Regiment (474, 485, 492, 493 Batteries) |
| 85 Searchlight Regiment (520, 521, 522, 523 Batteries) – Joined Jan 41 |
Order of Battle 1941-42
| 98 Heavy Anti-Aircraft Regiment (300, 301, 320 Batteries) – Joined May 42 |
| 119 Heavy Anti-Aircraft Regiment (372, 377, 378, 464 Batteries) – Joined Dec 41, left Jun 42 |
| 35 Light Anti-Aircraft Regiment (78, 89, 144 Batteries) – Left Nov 41 |
| 75 (Middlesex) Light Anti-Aircraft Regiment (233, 234, 303 Batteries) – Joined Dec 41, left Jul 42 |
| 87 Light Anti-Aircraft Regiment (185, 288, 291 Batteries) – Joined Oct 41, left Jun 42 |
| 127 (Queens) Light Anti-Aircraft Regiment (416, 420, 439, 440 Batteries) – Joined Jul 42 |
| 2 Searchlight Regiment |
| 3 Searchlight Regiment – Left Dec 41 |
| 76 Searchlight Regiment – Left Dec 41 |
| 82 Searchlight Regiment (483, 510, 525, 554 Batteries) – Joined Dec 41 |
| 85 Searchlight Regiment – Left Dec 41 |
