19 Anti-Aircraft Z Regiment RA formed in October 1942 at Bracken Knoll, Courtenay Avenue, London N6 with four batteries. The Regiment disbanded in March 1945 with RHQ becoming 5 Area Anti-Aircraft Maintenance HQ.
| Oct 42 | Formed | Bracken Knoll, London, UK | |
| Oct 42 |  |
1 Anti-Aircraft Group, 49 Anti-Aircraft Brigade | London, UK |
| Apr 44 | |
Became 19 Anti-Aircraft Area Mixed Regiment | Bayswater Road, London, UK |
| Feb 45 | |
1 Anti-Aircraft Group, 26 Anti-Aircraft Brigade | London, UK |
| Mar 45 | Batteries disbanded Became 5 Area Anti-Aircraft Maintenance HQ |
Batteries
| Oct 42 | 173, 189, 193, 194 |
| Dec 42 | 103, 173, 189, 192, 193 |
Batteries manned by Home Guard
| Battery | Home Guard Unit | Date from |
| 103 Battery | 102 County of London (Mixed) | Nov 42 |
| 173 Battery | 101 Middlesex (Mixed) | Nov 42 |
| 189 Battery | 102 Middlesex (Mixed) | Nov 42 |
| 192 Battery | 108 County of London (Mixed) | Jul 42 |
| 193 Battery | 101 City of London (Mixed) | Jul 42 |