570 Coast Regiment RA was formed from Flatholme Fire Command with three batteries, in December 1941. It moved to Barry in December 1942. RHQ 570 Coast Regiment RA was disbanded in June 1945 and 145, 146 and 299 Batteries went to suspended animation. The remaining batteries were disbanded.
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.
| Dec 41 | Formed from Flatholme Fire Command – Severn Defences | Bristol Channel, UK | |
| Dec 41 |  |
Western Command | Bristol Channel, UK |
| Dec 42 | Flatholme Fire Command | Barry, Glamorgan, UK | |
| Jun 45 | Disbanded | Barry, Glamorgan, UK |
Batteries
| Dec 41 | 145, 188, 189 |
| Dec 42 | 145, 146, 170, 187, 205, 430 – 1, 2, 105 & 106 Coast Observer Detachments |
| May 43 | 145, 146, 170, 187, 205, 430 – 105 & 106 Coast Observer Detachments |
| Apr 44 | 145, 146, 170, 184, 187, 188, 189, 205, 299, 366, 422, 430, 431 – 24 & 33 Coast Observer Detachments |
| Jul 44 | 145, 146, 170, 184, 187, 188, 189, 205, 299, 366, 422, 430, 431 |