58 (Kent) Heavy Anti-Aircraft Regiment RA (TA) was originally raised as a Medium Regiment in 1921 and titled 52 (Kent) Medium Brigade RA (TA), it was converted to Anti-Aircraft in February 1935 as 58 (Kent) Anti-Aircraft Brigade RA (TA). It was re-designated as 58 (Kent) Anti-Aircraft Regiment RA (TA) from 58 (Kent) Anti-Aircraft Brigade RA (TA) in January 1939. It became 58 (Kent) Heavy Anti-Aircraft Regiment RA (TA) in June 1940. The Regiment was placed in suspended animation in December 1945 and was reconstituted as 458 (Kent) (M) 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.
| Sep 39 |  |
6 Anti-Aircraft Division, 28 Anti-Aircraft Brigade | South Thames, UK |
| Oct 41 |  |
9 Anti-Aircraft Division, 5 Anti-Aircraft Brigade | South West England |
| May 42 |  |
4 Anti-Aircraft Division, 44 Anti-Aircraft Brigade | Manchester, UK |
| Sep 42 |  |
1 Army | UK |
| Nov 42 | |
1 Army, 22 Anti-Aircraft Brigade | Algiers, Algeria |
| Mar 43 | |
1 Army, 52 Anti-Aircraft Brigade | Algeria |
| Jun 43 | Operation Corkscrew | Pantelleria | |
| Oct 43 |  |
Allied Forces HQ, 22 Anti-Aircraft Brigade | Naples, Italy |
| Dec 45 | Suspended animation |
Batteries
| Sep 39 | 206, 207 (Erith), 208 (Bromley), 264 (Dartford) |
| Jun 41 | 207, 208, 264, 419 |
| Dec 41 | 207, 208, 264 |
Equipment
| Nov 42 | 3 inch Guns |