140 (5th London) Medium Regiment RA (TA) was formed by the conversion of 140 Field Regiment in September 1943. It went into suspended animation in February 1945. 140 (5th London) Medium Regiment RA (TA) was disbanded 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 43 | Formed from 140 Field Regiment | ||
| Sep 43 |  |
8 Army | Italy |
| May 44 |  |
2 Army Group RA | Cassino, Italy |
| Feb 45 | Suspended animation |
Batteries
| Sep 43 | 367, 518 |
Equipment
| May 44 | 4.5 inch Guns |