105 Heavy Anti-Aircraft Regiment RA (TA) was formed at Fey Crees Practice Camp in September 1940. The Regiment Served with Anti-Aircraft Command and transferred to 2 Army in March 1944. It fought in France and Belgium in 1944. 105 Heavy Anti-Aircraft Regiment RA (TA) was disbanded in October 1945.
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 40 | Formed | ||
| Sep 40 |  |
1 Anti-Aircraft Division, 48 Anti-Aircraft Brigade | UK |
| Jun 41 | |
1 Anti-Aircraft Division, 26 Anti-Aircraft Brigade | UK |
| Oct 41 | |
1 Anti-Aircraft Division, 48 Anti-Aircraft Brigade | UK |
| Mar 44 |  |
2 Army | UK |
| Aug 44 | |
2 Army, 101 Anti-Aircraft Brigade | Cherbourg, France |
| Dec 44 |  |
21 Army Group, 101 Anti-Aircraft Brigade | Brussels, Belgium |
Batteries
| Sep 40 | 326, 330, 333 |
| Nov 40 | 326, 330, 333, 350 |
| Aug 41 | 326, 330, 333, 350, 435 |
| Sep 41 | 326, 330, 333, 350 |
| Jun 42 | 326, 330, 333 |
Gun Sites Occupied
326 Battery at practice camp Bushey 14 – 20 Dec 40 & firing camp Towyn 20 – 30 Dec 40
330 Battery
| Dates | Gun Sites | Comments | Gun Defended Area |
| Dec 40 | ZS17 Mitcham | 4 x 4.5 inch 4 x 3.7 inch mobile |
London IAZ |
| Dec 40 | ZS15 Norbury | Personnel only | London IAZ |
333 Battery
| Dates | Gun Sites | Comments | Gun Defended Area |
| Dec 40 | ZS19 Wimbledon | Personnel only | London IAZ |
| Dec 40 | ZS27 Weston Green | 2 x 3.7 inch mobile | London IAZ |