145 (Mixed) Heavy Anti-Aircraft Regiment RA(TA) was formed at Hemlington, Middlesborough in January 1942. It became a non-mixed Regiment in August 1945. The Regiment was considered a War Formed Regiment in January 1947 and re-designated as 106 Heavy Anti-Aircraft Regiment RA in April that year.
| Jan 42 | Formed | Middlesbrough, Yorkshire, UK |
| Apr 42 | 43 Anti-Aircraft Brigade, 7 Anti-Aircraft Division | North East England |
| Oct 42 | 43 Anti-Aircraft Brigade, 6 Anti-Aircraft Group | North East England |
| Apr 43 | 36 Anti-Aircraft Brigade, 6 Anti-Aircraft Group | Scotland |
Batteries
| Jan 42 | 500 (Mixed), 501 (Mixed), 502 (Mixed), |
| Jun 42 | 500 (Mixed), 501 (Mixed), 502 (Mixed), 536 (Mixed), |
| 1945 | 501 (M), 502 (M), 536 (M) |
