150 (Mixed) Heavy Anti-Aircraft Regiment RA (TA) was formed in Bristol in February 1942. It became a non-mixed Regiment in August 1945. The Regiment served with Anti-Aircraft Command for its entire existence. 150 (Mixed) Heavy Anti-Aircraft Regiment RA (TA) was considered a War Formed Regiment in January 1947 and re-designated as 97 Heavy Anti-Aircraft Regiment RA in April that year.
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.
| Feb 42 | Formed | Bristol, UK | |
| Feb 42 |  |
8 Anti-Aircraft Division, 46 Anti-Aircraft Brigade | Cornwall, UK |
| Nov 44 |  |
9 Anti-Aircraft Group, 40 Anti-Aircraft Brigade | Southern England |
Batteries
| Mar 42 | 489 (Mixed), 509 (Mixed), 513 (Mixed), 515 (Mixed) |
| Jul 42 | 489 (M), 515 (M), 575 (M), 577 (M) |
| May 43 | 489 (M), 515 (M), 666 (M), 681 (M) |
| Jul 44 | 489 (M), 515 (M), 666 (M) |
| Nov 44 | 456 (Mixed), 489 (Mixed), 492 (M), 515 (Mixed) |
| Jul 45 | 456 (M), 489 (M), 492 (M) |