144 (Mixed) Heavy Anti-Aircraft Regiment RA(TA) was formed at Nottingham in January 1942. The Regiment was considered a War Formed Regiment in January 1947 and re-designated as 104 (M) Heavy Anti-Aircraft Regiment RA in April that year.
| Jan 42 | Formed | Nottingham, Nottinghamshire, UK |
| May 42 | 66 Anti-Aircraft Brigade, 2 Anti-Aircraft Division | Eastern England |
| Aug 42 | 50 Anti-Aircraft Brigade, 2 Anti-Aircraft Division | Eastern England |
| Dec 44 | 41 Anti-Aircraft Brigade, 5 Anti-Aircraft Group | Lincolnshire, UK |
| Feb 45 | 30 Anti-Aircraft Brigade, 5 Anti-Aircraft Group | Eastern England |
Batteries
| Jan 42 | 497, 498, 503, 504 |
| Aug 45 | 497, 498, 503 |
