29 (Kent) Searchlight Regiment RA (TA) formed in August 1940 by the transfer of 29 (Kent) Anti-Aircraft Battalion Royal Engineers (TA) to the RA. The Regiment served in Anti-Aircraft Command until its conversion in January 1945. 29 (Kent) Searchlight Regiment RA (TA) was converted to 631 Infantry Regiment RA in January 1945. It was re-constituted as 564 (Kent) (Mixed) Light Anti-Aircraft/Searchlight 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.
| Aug 40 | Formed from 29 Anti-Aircraft Battalion Royal Engineers | Chatham, Kent, UK | |
| Aug 40 |  |
6 Anti-Aircraft Division, 56 Light Anti-Aircraft Brigade | Kent, UK |
| Jan 42 |  |
8 Anti-Aircraft Division, 55 Light Anti-Aircraft Brigade | Plymouth, Devon, UK |
| Jun 42 | |
8 Anti-Aircraft Division, 60 Anti-Aircraft Brigade | Exeter, Devon, UK |
| Oct 42 |  |
3 Anti-Aircraft Group, 60 Anti-Aircraft Brigade | South West England |
| Oct 43 |  |
Orkney & Shetland Defences, 58 Light Anti-Aircraft Brigade | Orkney & Shetland, UK |
| Jan 45 | Became 631 (Kent) Infantry Regiment RA |
Batteries
| Aug 40 | 313, 314, 468 |
| May 41 | 313, 314, 468, 508 |
| Jan 42 | 313, 314, 468 |
| Jan 43 | 313, 314, 468, 511 |
| Jul 43 | 313, 314, 468 |
| May 44 | 313, 468 |