107 Royal Horse Artillery (South Nottinghamshire Hussars Yeomanry) (TA) was converted from 107 (South Nottinghamshire Hussars Yeomanry) Field Brigade RA (TA) in November 1938 with two batteries). 107 Royal Horse Artillery (South Nottinghamshire Hussars Yeomanry) (TA) was reconstituted as 307 (S Notts Hussars Yeomanry) Field 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.
| 3 Sep 39 |  |
Northern Command | Nottingham, Nottinghamshire, UK |
| Sep 39 | 1 Cavalry Division | Scampston, Yorkshire, UK | |
| Nov 39 | 1 Cavalry Division | Wragby, Leicestershire, UK | |
| Jan 40 | 1 Cavalry Division | Palestine | |
| Jun 40 |  |
British Troops Egypt | Mersa Matruh, Egypt Took over positions from 1 Field Regiment |
| Feb 41 | |
British Troops Egypt | Suez Canal, Egypt Spotting for mines |
| Apr 41 | Tobruk Garrison | Tobruk, Libya Extra Troop formed with 4.5 inch Howitzers. Captured Italian guns used for harassing fire |
|
| Dec 41 |  |
8 Army | Tmini, Egypt |
| Jan 42 | |
8 Army | Nile Delta, Egypt |
| Feb 42 | |
8 Army | Sidi Bishr (Alexandria), Egypt |
| Mar 42 |  |
22 Armoured Brigade Group | Beni Yusef, Egypt |
| May 42 | |
22 Armoured Brigade | Knightsbridge, Libya |
| 6 Jun 42 | |
22 Armoured Brigade | The Cauldron, Libya Regiment over run and destroyed fighting a rearguard action |
| Jun 42 | Became 107 Medium Battery |
Batteries
| 3 Sep 39 | 425, 426 |
| 24 Mar 42 | 425, 426, 520 |
Equipment
| 1939 | 16 x 18 pdr Mk IV Guns & Lorries |
| Nov 39 | 18 pdr Mk II |
| Feb 40 | 425 Battery 18 pdr Mk IIPA Guns, 426 Battery 4.5 inch Howitzers |
| 9 Mar 41 | 25 pdr & Quads, Bren Carrier Observation Post |
| Mar 42 | M3 Stuart & Marmon Harrington Observation Post |