101 Anti-Tank Regiment RA was formed in December 1942 from 8th Battalion The Lincolnshire Regiment with three batteries at Leigh on Sea. RHQ was disbanded and the batteries dispersed in August 1943.
| Dec 42 | Formed from 8th Battalion The Lincolnshire Regiment | Leigh on Sea, Essex, UK |
| Dec 42 | Home Forces | UK |
| Aug 43 | Disbanded |
Batteries
| Dec 42 | 186, 187, 188 |