3 Coast Regiment RA was re-designated from 3 Heavy Regiment in January 1941, on Gibraltar. It was re-designated again in April 1947 as 28 Coast Regiment RA.
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.
| Jan 41 | Re-designation of 3 Heavy Regiment | Gibraltar | |
| Jan 41 |  |
Gibraltar Command | Gibraltar |
| Apr 47 | Re-designated 28 Coast Regiment |
Batteries
| Jan 41 | 4, 26, 27 |
| Dec 42 | 4 |
| Jan 43 | 4, 41 |
| Mar 44 | 4, 26, 27 |