The 1st Anti-Aircraft Division became independent, leaving 1st Anti-Aircraft Corps and coming directly under Anti-Aircraft Command, during April 1942. Like the other Anti-Aircraft Corps and Divisions, it was disbanded and replaced on 1 October 1942 by a new Anti-Aircraft Group structure. London was covered by the 1st Anti-Aircraft Group.
HQ Hillingdon House, RAF Uxbridge
Order of Battle 1939
| 26 (London) Anti-Aircraft Brigade, Brompton Road, London SW3 |
| 53 (City of London) Anti-Aircraft Regiment |
| 86 (Honourable Artillery Company) Anti-Aircraft Regiment |
| 88 Anti-Aircraft Regiment |
| 38 Light Anti-Aircraft Brigade, Duke of York’s Headquarters, Chelsea |
| 26 (London Electrical Engineers) Anti-Aircraft Battalion, Royal Engineers (TA) |
| 27 (London Electrical Engineers) Anti-Aircraft Battalion, Royal Engineers (TA) |
| 75 (Middlesex) Searchlight Regiment |
| 48 Anti-Aircraft Brigade, Lewisham |
| 54 (City of London) Anti-Aircraft Regiment |
| 60 (City of London) Anti-Aircraft Regiment |
| 97 (London Scottish) Anti-Aircraft Regiment |
| 99 (London Welsh) Anti-Aircraft Regiment |
| 49 Anti-Aircraft Brigade, RA(TA), Lower Belgrave Street, London SW1 |
| 51 (London) Anti-Aircraft Regiment |
| 52 (London) Anti-Aircraft Regiment |
| 84 (Middlesex, London Transport) Anti-Aircraft Regiment |
Order of Battle 1941-42
| 26 Anti-Aircraft Brigade – part of London Inner Artillery Zone |
| 4 Heavy Anti-Aircraft Regiment – left in Jun 41 for West Africa Command |
| 52 (London) Heavy Anti-Aircraft Regiment – left Summer 41 for 9 Anti-Aircraft Division |
| 84 (Middlesex, London Transport) Heavy Anti-Aircraft Regiment – joined from 49 Anti-Aircraft Brigade, Summer 41, left Winter 41 for 6 Anti-Aircraft Division |
| 86 (Honourable Artillery Company) Heavy Anti-Aircraft Regiment – rejoined by Feb 41, to 49 Anti-Aircraft Brigade late 41 |
| 88 Heavy Anti-Aircraft Regiment – rejoined from 9 Anti-Aircraft Division by May 41, left Jun 41 for Middle East Forces |
| 105 Heavy Anti-Aircraft Regiment – joined from 48 Anti-Aircraft Brigade Summer 41, returned Autumn 41 |
| 119 Heavy Anti-Aircraft Regiment – formed Dec 40, left by May 41 for 8 Anti-Aircraft Division |
| 120 Heavy Anti-Aircraft Regiment – formed Jan 41, joined Summer 41 |
| 132 (Mixed) Heavy Anti-Aircraft Regiment –formed Sep 41 |
| 156 (Mixed) Heavy Anti-Aircraft Regiment – formed Apr 42 |
| 62 Light Anti-Aircraft Regiment – formed Oct 40, left Jun 42 for 9 Anti-Aircraft Division |
| 6 Anti-Aircraft Z Regiment – formed Sep 40 |
| 38 Light Anti-Aircraft Brigade – London Searchlight layout |
| 26 (London Electrical Engineers) Searchlight Regiment |
| 35 (First Surrey Rifles) Searchlight Regiment – to 5 Anti-Aircraft Division Summer 41 |
| 63 (Queens) Searchlight Regiment – joined autumn 41 from 5 Anti-Aircraft Division, converted to 127 (Queens) Light Anti-Aircraft Regiment Mar 42 |
| 75 (Middlesex) Searchlight Regiment – converted to 75 Light Anti-Aircraft Regiment Feb 41, joined 8 Anti-Aircraft Division |
| 79 Searchlight Regiment – formed Oct 40 |
| 48th AA Brigade– part of London Inner Artillery Zone |
| 53 (City of London) Heavy Anti-Aircraft Regiment – rejoined from 6 Anti-Aircraft Division Feb 41 as a mobile regiment, left in Oct 41 to India |
| 54 (City of London) Heavy Anti-Aircraft Regiment |
| 97 (London Scottish) Heavy Anti-Aircraft Regiment – to 49 Anti-Aircraft Brigade Autumn 41 |
| 105 Heavy Anti-Aircraft Regiment – formed Sep 40, to 26 Anti-Aircraft Brigade Summer 41, returned Autumn 41 |
| 109 Heavy Anti-Aircraft Regiment – from 49 Anti-Aircraft Brigade Dec 41, to 26 Anti-Aircraft Brigade by May 42 |
| 141 (M) Heavy Anti-Aircraft Regiment – formed Dec 41, to 49 Anti-Aircraft Brigade Jan 42 |
| 1 Anti-Aircraft Z Regiment – formed Sep 40 |
| 14 Anti-Aircraft Z Regiment – formed Sep 41 |
| 49th Anti-Aircraft Brigade – part of London Inner Artillery Zone |
| 53 (City of London) Heavy Anti-Aircraft Regiment – rejoined Jul 40, left for 6 Anti-Aircraft Division Oct 40 |
| 57 (Wessex) Heavy Anti-Aircraft Regiment – from Anti-Aircraft Division Autumn 41, to 11 Anti-Aircraft Division Jan 42 |
| 84 (Middlesex, London Transport) Heavy Anti-Aircraft Regiment– to 26 Anti-Aircraft Brigade Summer 41 |
| 86 (Honourable Artillery Company) Heavy Anti-Aircraft Regiment – from 26 Anti-Aircraft Brigade Mar 42 |
| 97 (London Scottish) Heavy Anti-Aircraft Regiment – from 48 Anti-Aircraft Brigade Autumn 41 |
| 109 Heavy Anti-Aircraft Regiment – formed Sep 40, to 48 Anti-Aircraft Brigade Dec 41, returned Jun 42 |
| 141 (Mixed) Heavy Anti-Aircraft Regiment – from 48 Anti-Aircraft Brigade Jan 42 |
| 11 (City of London Yeomanry) Light Anti-Aircraft Regiment – transferred to War Office Reserve Summer 41 |
| 36 Light Anti-Aircraft Regiment – to 8 Anti-Aircraft Division by May 41 |
| 42 Light Anti-Aircraft Regiment – from 11 Anti-Aircraft Division by May 41 |
| 70 Light Anti-Aircraft Regiment – formed Jan 41 |
| 73 Light Anti-Aircraft Regiment RA (TA)– formed Feb 41 |