54 Heavy Regiment RA was formed from a cadre of various regiments, including 78 Field Regiment RA(TA) and 52 Heavy Regiment RA(TA) in December 1939 at Sheffield.
54 Heavy Regiment was stationed in coastal defence until it was called up to support First Army in North Africa, being the first heavy regiment to be called up into the new AGRA formations. After North Africa, 54 Heavy Regiment would go to Italy in December 1943, where it would serve until it was converted in February 1945 to 54 Super Heavy 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.
| Dec 39 | Formed | Sheffield, Yorkshire, UK | |
| Dec 39 | Home Forces | UK | |
| Oct 40 |  |
Southern Command | Bournemouth, Dorset, UK |
| Sep 42 |  |
1 Army Group RA | UK |
| Mar 43 | |
1 Army Group RA | N Africa |
| Dec 43 | |
1 Army Group RA | Italy |
| Feb 45 | Became 54 Super Heavy Regiment |
Batteries
| Dec 39 | A, B, C, D |
| Mar 42 | P, Q, R, S |
| Jan 43 | 11, 12, 13, 14 |
Equipment
| Apr 40 | 9.2 inch Howitzers & 6 inch Guns (D Battery) |
| Aug 42 | 7.2 inch Howitzer MkIV |
| Dec 43 | 7.2 inch Howitzer MkIV & 155mm Long Toms (12 & 14 Battery) |