| Aug 40 | Formed from 31 Anti-Aircraft Battalion Royal Engineers | Sutton, London, UK |
| Aug 40 | 27 Anti-Aircraft Brigade | Portsmouth, Hampshire, UK |
| Feb 42 | Became 123 Light Anti-Aircraft Regiment |
Batteries
| Aug 40 | 324, 325, 326, 327 |
The history of the Regiment in WW2
