79 Searchlight Regiment RA (TA) was formed in September 1940 with three batteries. The Regiment served in Anti-Aircraft Command in London and the South East until disbadment. 79 Searchlight Regiment RA (TA) was disbanded in December 1944 at Hatfield Peveril, Chelmsford.
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.
| Oct 40 | Formed | ||
| Oct 40 |  |
1 Anti-Aircraft Division, 38 Anti-Aircraft Brigade | London, UK |
| Oct 42 |  |
1 Anti-Aircraft Group, 38 Anti-Aircraft Brigade | London, UK |
| Jan 43 | |
2 Anti-Aircraft Division, 38 Anti-Aircraft Brigade | South East England |
| Mar 44 | |
2 Anti-Aircraft Division, 47 Anti-Aircraft Brigade | South East England |
| Oct 44 | |
2 Anti-Aircraft Division, 27 Anti-Aircraft Brigade | South East England |
| Dec 44 | Disbanded | Chelmsford, Essex, UK |
Batteries
| Oct 40 | 502, 503, 504 |
| May 42 | 342, 502, 503, 504 |
| Mar 44 | 502, 503, 504 |