133 (Mixed) Heavy Anti-Aircraft Regiment RA (TA) was formed at Clifton in September 1941. It became a non-mixed unit in August 1945. The Regiment was considered a new War Formed Regiment in January 1947 at Rotherham, Yorkshire and in the April was re-designated 92 Heavy Anti-Aircraft Regiment RA.
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.
| Sep 41 | Formed | Clifton, Bristol, UK | |
| Sep 41 |  |
8 Anti-Aircraft Division, 46 Anti-Aircraft Brigade | South West England |
| Oct 42 |  |
3 Anti-Aircraft Group, 46 Anti-Aircraft Brigade | South West England |
Batteries
| Nov 41 | 451, 462, 463, 472 |
| May 43 | 451, 462, 463, 472, 670 |
| May 44 | 451, 462, 463, 472 |
| Jul 45 | 451, 462, 463 |