46 Anti-Aircraft Brigade served in the South West of England with 5 Anti-Aircraft Division. When the Division split to form 8 Division the Brigade moved to the new Division. At present, nothing more is known after the change to 3 Anti-Aircraft Group about 46 Anti-Aircraft Brigade.
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.
| 1939 | South West |  | 5 Anti-Aircraft Division |
| Nov 40 | Bristol |  | 8 Anti-Aircraft Division |
| Oct 42 | Bristol |  | 3 Anti-Aircraft Group |
Order of Battle 1939
| 76 (Gloucestershire) Anti-Aircraft Regiment (236, 237, 238 Batteries) |
| 98 Anti-Aircraft Regiment (300, 301 Batteries) |
| 4 (City of Bristol) Battalion Gloucestershire Regiment (66 Searchlight Regiment) |
Order of Battle 1939-40
| 76 (Gloucestershire) Anti-Aircraft Regiment (236, 237, 238 Batteries) |
| 23 Light Anti-Aircraft Regiment (73, 74, 130 Batteries) – Left May 1941 |
| 66 (Gloucestershire Regiment) Searchlight Regiment (Part) (447, 448, 449 Batteries) |
| 68 (Monmouthshire Regiment) Searchlight Regiment (453, 454, 455 Batteries) |
Order of Battle 1941-42
| 59 (Essex Regiment) Heavy Anti-Aircraft Regiment (164, 167, 265 Batteries) – Left to War Office control March 1942 |
| 76 (Gloucestershire) Heavy Anti-Aircraft Regiment (236, 237, 238, 349 Batteries) – Left December 1941 |
| 104 Heavy Anti-Aircraft Regiment ( 328, 329, 336, 452 Batteries) – Left December 1941 |
| 112 Heavy Anti-Aircraft Regiment (351, 352, 353, 380 Batteries) – Joined May left December 1941 |
| 116 Heavy Anti-Aircraft Regiment (341, 363, 364, 441 Batteries) – Left December 1941 |
| 119 Heavy Anti-Aircraft Regiment ( 372, 377, 378, 464 Batteries) – Joined May left December 1941 |
| 133 (Mixed) Heavy Anti-Aircraft Regiment (451, 462, 463, 472 (M) Batteries) |
| 140 Heavy Anti-Aircraft Regiment ( 418, 420, 429, 430 Batteries) – Left May 42 |
| 150 (Mixed) Heavy Anti-Aircraft Regiment (489, 509, 513, 515 (M) Batteries) |
| 165 Heavy Anti-Aircraft Regiment (198, 275, 317 Batteries) |
| 36 Light Anti-Aircraft Regiment ( 97, 128, 266 Batteries) – Joined May left Summer 1941 |
| 47 Light Anti-Aircraft Regiment (85, 131, 258, 451 Batteries) – Joined December 1941 Left 1942 |
| 133 Light Anti-Aircraft Regiment (442, 443, 444, 465 Batteries) – Joined July 1942 |
| 66 Searchlight Regiment (447, 448, 449, 559 Batteries) – Left Summer 41 |
| 68 Searchlight Regiment (453, 454, 455 Batteries) – Left Summer 41 |
| 1 Anti-Aircraft Z Regiment (103, 123, 129, 145 Batteries) – Joined May 41 left December 1941 |
