526 (Durham) Coast Regiment RA (TA) was formed from part of the Durham Heavy Regiment RA (TA), in July 1940. RHQ was placed in suspended animation and the batteries disbanded, in June 1945. 526 (Durham) Coast Regiment RA (TA) was reconstituted as 427 (Durham) Heavy Anti-Aircraft Regiment RA (TA) 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.
| Jul 40 | Formed from part of Durham Heavy Regiment | ||
| Jul 40 |  |
Northern Command | UK |
| Nov 40 | Pasley Fire Command | Pasley, Coatham, Yorkshire, UK | |
| Jan 44 | |
Northern Command | Pasley, Coatham, Yorkshire, UK |
| Jun 45 | Suspended animation |
Batteries
| Jul 40 | A, B |
| Apr 41 | 116 (Pasley), 117 (South Gare) |
| Jul 41 | 116, 117 – 67 Coast Observation Detachment |
| May 42 | 116, 117, 316 (Whitby), 317 (Scarborough) – 67 Coast Observation Detachment |
| Jul 42 | 116, 117, 316, 317 – 29 & 67 Coast Observer Detachment |
| Apr 43 | 116, 117, 139, 267, 315 – 29 & 67 Coast Observer Detachment |
| Nov 43 | 116, 117, 139, 267, 315 – 67 Coast Observation Detachment |
| Feb 45 | 100, 116, 117, 139, 259, 260, 262, 263, 264, 266, 267, 269, 271, 272, 273, 274, 275, 276, 310, 311, 312, 313, 314, 315, 319, 348, 349, 351, 383, 397, 437, 444, 445 |
Equipment
| 2 x 6 inch Mk XII Guns | Scarborough | 317 Battery |
| 2 x 6 inch Mk VII Guns | Whitby | 316 Battery |