40 Anti-Aircraft Brigade was formed at Boston Lodge in South Ealing, London in September 1938. It served in Anti-Aircraft Command in the South and East of England for the entire war. Just before D Day it covered the invasion forces on the south coast. 40 Anti-Aircraft Brigade then became part of the Diver defences against the V1 rockets.
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 38 | Formed South Ealing, London War station RAF Duxford |  | 2 Anti-Aircraft Division |
Oct 42 | Nottinghamshire |  | 5 Anti-Aircraft Group |
May 44 | Portsmouth |  | 6 Anti-Aircraft Group |
Jun 44 | South Coast Diver defences |  | 6 Anti-Aircraft Group |
Oct 44 | Thames Estuary Diver defences |  | 1 Anti-Aircraft Group |
Nov 44 | Thames Estuary Diver defences |  | 9 Anti-Aircraft Group |
Jan 45 | London |  | 2 Anti-Aircraft Group |
Order of Battle September 1938
33 (St Pancras) Anti-Aircraft Battalion RE (332, 333, 334 Companies) – Searchlights |
36 (Middlesex) Anti-Aircraft Battalion RE (317, 345, 346, 424 Companies) – Searchlights |
56 (Middlesex) Anti-Aircraft Battalion RE (344, 425, 426 Companies) – Searchlights |
9th Battalion Middlesex Regiment (60 Searchlight Regiment) (429, 431, 439 Companies) |
10th (3rd City of London) Battalion Royal Fusiliers (69 Searchlight Regiment) (456, 457, 458 Companies) |
Order of Battle September 1940-41
78 (1st East Anglian) Heavy Anti-Aircraft Regiment (243, 244, 245, 409 Batteries) |
30 Light Anti-Aircraft Regiment (117, 118, 120 Batteries) |
36 (Middlesex) Searchlight Regiment (317, 345, 346, 424 Batteries) |
64 (Essex Regiment) Searchlight Regiment (441, 442, 443 Batteries) |
72 (Middlesex) Searchlight Regiment (465, 466, 467, 510 Batteries) |
Order of Battle September 1941-43
78 (1st East Anglian) Heavy Anti-Aircraft Regiment (243, 244, 245, 409 Batteries) – Left Summer 1941 |
30 Light Anti-Aircraft Regiment (117, 118, 120 Batteries) – Left December 1941 |
33 Light Anti-Aircraft Regiment (67, 68, 132 Batteries) – Joined Autumn left December 1941 |
96 Light Anti-Aircraft Regiment (80, 299, 300, 454, 479 Batteries) – Joined November 1941 left Spring 1942 |
138 Light Anti-Aircraft Regiment (80, 299, 300, 454, 479 Batteries) – Joined May 1942 left Summer 1943 |
36 (Middlesex) Searchlight Regiment (317, 345, 346, 424 Batteries) – Left September 1943 |
64 (Essex Regiment) Searchlight Regiment (441, 442, 443 Batteries) – Left June returned October 1942, left August 1943 |
72 (Middlesex) Searchlight Regiment (465, 466, 467, 510 Batteries) – Left late 1941 |
Order of Battle 1943-44
126 Heavy Anti-Aircraft Regiment (423, 425, 426, 431 Batteries) |
127 Heavy Anti-Aircraft Regiment (396, 411, 422, 433 Batteries) |
140 Heavy Anti-Aircraft Regiment (418, 420, 429, 430 Batteries) – Joined January 1944 |
129 Light Anti-Aircraft Regiment (425, 426, 427, 455 Batteries) |
134 Light Anti-Aircraft Regiment (192, 275, 287, 475 Batteries) |
135 Light Anti-Aircraft Regiment (445, 447, 450, 469 Batteries) |
Order of Battle Summer 1944
122 Heavy Anti-Aircraft Regiment (397, 400, 401 Batteries) – Joined September 1944 |
126 Heavy Anti-Aircraft Regiment (423, 425, 426, 431 Batteries) – Re-joined July 1944 |
127 Heavy Anti-Aircraft Regiment (396, 411, 422, 433 Batteries) – Left August 1944 |
132 (Mixed) Heavy Anti-Aircraft Regiment (435, 450, 457, 469 (M) Batteries) – Joined July left August 1944 |
134 (Mixed) Heavy Anti-Aircraft Regiment (459, 460, 461, 583 (M) Batteries) – Joined July left September 1944 |
136 Heavy Anti-Aircraft Regiment (182, 409, 432, 468 Batteries) – Joined July left August 1944 |
140 Heavy Anti-Aircraft Regiment (182, 409, 432, 468 Batteries) – Left July 1944 |
189 (Mixed) Heavy Anti-Aircraft Regiment (575, 577 (M) Batteries) – Joined August left September 1944 |
19 Light Anti-Aircraft Regiment (221, 263, 294 Batteries) – Joined August 1944 |
88 Light Anti-Aircraft Regiment (178, 289, 293 Batteries) – Joined August 1944 |
134 Light Anti-Aircraft Regiment (192, 275, 287, 475 Batteries) – Left July 1944 |
Order of Battle 1944-45
119 Heavy Anti-Aircraft Regiment (372, 377, 378 Batteries) – Joined October left November 1944 |
126 Heavy Anti-Aircraft Regiment (423, 425, 426, 431 Batteries) |
128 Heavy Anti-Aircraft Regiment (309, 431, 468 Batteries) – Joined March 1945 |
136 Heavy Anti-Aircraft Regiment (182, 409, 432, 468 Batteries) – Re-joined October 1944 |
150 (Mixed) Heavy Anti-Aircraft Regiment (456, 489, 515 (M) Batteries) – Joined November 1944 |
168 (Mixed) Heavy Anti-Aircraft Regiment (557, 559, 611 (M) Batteries) – Joined October left November 1944 |
19 Light Anti-Aircraft Regiment (221, 263, 294 Batteries) |
138 Light Anti-Aircraft Regiment (454, 458, 469 Batteries) – Joined October left December 1944 |