The Regiment 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.
| Sep 39 | 28 Anti-Aircraft Brigade, 6 Anti-Aircraft Division | South Thames, UK |
| Oct 41 | 5 Anti-Aircraft Brigade, 9 Anti-Aircraft Division | South West England |
| May 42 | 44 Anti-Aircraft Brigade, 4 Anti-Aircraft Division | Manchester, UK |
| Sep 42 | 1 Army | UK |
| Nov 42 | 22 Anti-Aircraft Brigade | Algiers, Algeria |
| Mar 43 | 52 Anti-Aircraft Brigade | Algeria |
| Jun 43 | Operation Corkscrew | Pantelleria |
| Oct 43 | 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 |
