189 Field Regiment RA was formed at Vinters Park Camp, Maidstone in December 1942 with three batteries. It was disbanded in January 1943 to re-form 6 Field Regiment.
| Dec 42 | Formed | Maidstone, Kent, UK |
| Dec 42 | Home Forces | UK |
| Jan 43 | Disbanded | Maidstone, Kent, UK |
Batteries
| Dec 42 | P, Q, R |
| Jan 43 | 526, 527, 528 |