535 (Orkney) Coast Regiment RA (TA) was formed from part of the Orkney Heavy Regiment RA (TA), in September 1940. It was responsible for the eastern defences in Kirkwall Fire Command. RHQ was placed in suspended animation in June 1945 with 148, 150 & 151 Batteries, the remainder were disbanded. 535 (Orkney) Coast Regiment RA (TA) was disbanded in January 1947.
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 from part of Orkney Heavy Regiment | Orkney, UK | |
| Sep 40 |  |
OSDEF | Kirkwall, Orkney, UK |
| Dec 42 | Kirkwall Fire Command | Kirkwall, Orkney, UK | |
| Jun 45 | Suspended animation |
Batteries
| Sep 40 | A, B, C, D |
| Apr 41 | 146 (North Lerwick), 147 (Deerness/Rerwick Head), 148 (Galtness), 149, 150, 151 (Wasswick) |
| May 41 | 147, 148, 149, 150, 151, 222 |
| Jun 41 | 147, 148, 150, 151, 222, 329 |
| May 43 | 148, 150, 151, 222, 329, 352 |