85 (Tees) Anti-Aircraft Brigade RA(TA) was formed at Middlesbrough in November 1938. It was re-designated as 85 (Tees) Anti-Aircraft Regiment RA(TA) in January 1939. In June 1940 it was re-designated as Heavy Anti-Aircraft. The Regiment was placed in suspended animation in October 1944 and reconstituted as 485 (Tees) (M) Heavy Anti-Aircraft Regiment RA(TA) in January 1947.
| Jan 39 | 43 Anti-Aircraft Brigade, 7 Anti-Aircraft Division | Middlesbrough, Teeside, UK |
| Apr 40 | 1 Anti-Aircraft Brigade | France |
| May 40 | 1 Anti-Aircraft Brigade | Dilbeek, Belgium |
| May 40 | 2 Anti-Aircraft Brigade | Dunkirk, France |
| Jun 40 | 5 Anti-Aircraft Brigade, 5 Anti-Aircraft Division | Gloucester, Gloucestershire, UK |
| Dec 40 | 28 Anti-Aircraft Brigade, 6 Anti-Aircraft Division | Kent , UK |
| May 42 | 71 Anti-Aircraft Brigade, 6 Anti-Aircraft Division | Kent , UK |
| Oct 42 | 25 Anti-Aircraft Brigade, GHQ Reserve | UK |
| Mar 43 | War Office Reserve | UK |
| May 43 | 66 Anti-Aircraft Brigade | Bone, Algeria |
| Dec 43 | 25 Anti-Aircraft Brigade | Manfredonia, Italy |
| Oct 44 | Suspended animation |
Batteries
| Jan 39 | 174 (North Riding), 175 (2nd North Riding), 220 (County of Durham) |
| May 41 | 174, 175, 220, 413 |
| May 42 | 174, 175, 220 |
Equipment
| Sep 39 | 24 x 3.7 inch Guns |
Gun Sites Occupied
(Site – */* = old site/new site)
174 Battery
| Dates | Gun Sites | Gun Defended Area |
| 12 Jul 40 | X Pembrey (4 guns) T Sketty (4 guns) |
Pembrey Swansea |
| Sep 40 | Y Pembroke Dock Z Pembroke Dock |
220 Battery
| Dates | Gun Sites | Gun Defended Area |
| Nov 40 | N/H4 Nash | Newport |
