512 (East Riding) Coast Regiment RA (TA) was formed from a part of the East Riding Heavy Regiment RA (TA), in July 1940. In January 1945, RHQ was converted to 617 Infantry Regiment RA (TA) at Gorleston, Great Yarmouth and the batteries all joined 526 Coast Regiment RA (TA). RHQ 512 (East Riding) Coast Regiment RA (TA) was placed in to suspended animation in October 1945 and was reconstituted in January 1947 as 422 (East Riding) Coast Regiment RA (TA).
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 East Riding Heavy Regiment | Spurn Point, Yorkshire, UK | |
| Jul 40 |  |
Northern Command | Spurn Point, Yorkshire, UK |
| Jan 42 |  |
1 Corps | Spurn Point, Yorkshire, UK |
| Nov 42 | Spurn Head Fire Command | Kilnsea, Yorkshire, UK | |
| Mar 44 | |
Northern Command | Kilnsea, Yorkshire, UK |
| Jan 45 | Became 617 Infantry Regiment RA(TA) | Great Yarmouth, Norfolk, UK |
Batteries
| Jul 40 | A, B |
| Dec 40 | A, B, 383 (Sunk Island) |
| Feb 41 | A, B, 350 (Hornsea), 383 |
| Apr 41 | 269, 270, 271, 272, 273, 350, 383 |
| Jul 41 | 269, 270, 271, 272, 273, 349 (Filey), 350, 383 |
| Sep 41 | 193 (Ringbrough), 269, 270, 271, 272, 273, 349, 350, 383 |
| May 42 | 193, 269, 270, 271, 272, 273, 274, 275, 276 – 64 & 65 Coast Observer Detachments |
| Oct 42 | 193, 269, 271, 272, 273, 274, 275, 276 – 65 & 94 Coast Observer Detachments |
| Jul 43 | 100, 269, 271, 272, 273, 274, 275, 276 – 65 & 94 Coast Observer Detachments |
| Jan 44 | 100, 269, 271, 272, 273, 274, 275, 276, 319, 349, 351, 383, 437, 445 – 65 & 94 Coast Observer Detachments |
| Apr 44 | 100, 269, 271, 272, 273, 274, 275, 276, 319, 349, 351, 383, 437, 445 |