26 Anti-Aircraft Brigade was formed in 1922 at Chelsea, London as 2 Air Defence Brigade. It was soon re-numbered as 26 AD Brigade. After another change of title it eventually became 26 (London) Anti-Aircraft Brigade in January 1939. It served with Anti-Aircraft Command throughout the war. In 1947 it was re-numbered as 52 (London) AA Brigade in the re-formed TA.
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.
| 1922 | Chelsea, London as 2nd and then 26th Air Defence Brigade | | |
| Dec 35 | Chelsea, London as 26 (London) Anti-Aircraft Group | | |
| Jan 39 | Re-titled 26 (London) Anti-Aircraft Brigade | | |
| Sep 39 | Brompton Road, South Kensington
responsible for North and East London |  | 1 Anti-Aircraft Division |
| Oct 42 | London |  | 1 Anti-Aircraft Group |
| Jan 47 | Chingford, Essex – TA portion of the Brigade was re-numbered as 52 (London) AA Brigade | | 1 Anti-Aircraft Group |
Order of Battle 1922 (26 Air Defence Brigade)
| 53 (City of London) Anti-Aircraft Regiment (157, 158, 159 Batteries) |
| 86 (Honourable Artillery Company) Anti-Aircraft Regiment (273, 274, 275 Batteries) |
| 88 Anti-Aircraft Regiment (281, 282, 283 Batteries) |
| 26 Anti-Aircraft Brigade Company Royal Army Service Corps |
Order of Battle September 1939
| 26 (London) Air Defence Brigade (151, 152, 153 Batteries) |
| 52 (London) Air Defence Brigade (154, 155, 156 Batteries) |
26 (London) Air Defence Battalion (London Electrical Engineers) Royal Engineers (TA)
(301, 303, 321, 339 Batteries) Searchlights |
| 26 (London) Anti-Aircraft Signals Company Royal Signals |
Order of Battle November 1940
| 4 Heavy Anti-Aircraft Regiment left June 1941 |
| 52 (London) Heavy Anti-Aircraft Regiment left July 1941 |
| 86 (Honourable Artillery Company) Heavy Anti-Aircraft Regiment |
| 88 Heavy Anti-Aircraft Regiment left June 1941 |
| 119 Heavy Anti-Aircraft Regiment |
| 62 Light Anti-Aircraft Regiment |
Order of Battle October 1942
| 101 Heavy Anti-Aircraft Regiment (226, 297, 379 Batteries) |
| 120 Heavy Anti-Aircraft Regiment (248, 381, 384 Batteries) |
| 132 (Mixed) Heavy Anti-Aircraft Regiment (435, 450, 457, 469 Batteries) |
| 137 (Mixed) Heavy Anti-Aircraft Regiment (476, 481, 487, 574 Batteries) |
| 156 (Mixed) Heavy Anti-Aircraft Regiment (530, 532, 533, 535 Batteries) |
| 6 AA Z Regiment (128, 148, 171, 173 Batteries) |
Order of Battle November 1945
| 12 Heavy Anti-Aircraft Regiment (4, 18, 360 Batteries) |
| 153 (Mixed) Heavy Anti-Aircraft Regiment (509, 513, 521 Batteries) |
| 156 (Mixed) Heavy Anti-Aircraft Regiment (530, 532, 533 Batteries) |
| 162 (Mixed) Heavy Anti-Aircraft Regiment (449, 480, 528 Batteries) |
