183 (Mixed) Heavy Anti-Aircraft Regiment RA(TA) was formed at Datchet in October 1942. The Regiment was disbanded in June 1945.
| Oct 42 | Formed | Datchet, Buckinghamshire, UK |
| Oct 42 | 38 Anti-Aircraft Brigade, 1 Anti-Aircraft Group | South East England |
| Jan 43 | 38 Anti-Aircraft Brigade, 2 Anti-Aircraft Group | South East England |
| Sep 44 | 5 Anti-Aircraft Brigade, 1 Anti-Aircraft Group | Southern England |
| Mar 45 | 103 Anti-Aircraft Brigade | Antwerp, Belgium |
| Jun 45 | Disbanded |
Batteries
| Nov 42 | 564 (Mixed), 591 (Mixed), 608 (Mixed) |
| Feb 43 | 564 (M), 591 (M), 608 (M), 640 (M) |
| Nov 44 | 564 (M), 591 (M), 608 (M) |
