133 Light Anti-Aircraft Regiment RA(TA) was converted in March 1942 from 89 Searchlight Regiment. The Regiment was disbanded in March 1946 in NW Europe.
| Mar 42 | Formed from 89 Searchlight Regiment | |
| Mar 42 | 60 Anti-Aircraft Brigade, 8 Anti-Aircraft Division | Watchet, Somerset, UK |
| Jun 42 | 69 Anti-Aircraft Brigade, 8 Anti-Aircraft Division | South West England |
| Sep 42 | 46 Anti-Aircraft Brigade – RHQ & 444 Battery only | Bristol |
| Mar 43 | 74 Anti-Aircraft Brigade – War Office control | UK |
| Aug 44 | 1 Canadian Army | Normandy, France |
| Oct 44 | 5 Royal Marine Anti-Aircraft Brigade | Antwerp, Belgium |
| Feb 45 | 74 Anti-Aircraft Brigade, 2 Canadian Corps | Reichswald, Germany |
Batteries
| Mar 42 | 298, 442, 443, 444 |
| May 42 | 298, 442, 443, 444, 475 |
| Jul 42 | 442, 443, 444, 465 |
| Oct 42 | 442, 443, 444 |
