69 (3rd City of London) Searchlight Regiment RA (TA) formed in August 1940 by the transfer of 10th (3rd City of London) Battalion The Royal Fusiliers (69 Searchlight Regiment) (TA) to the RA. It served in Anti-Aircraft Command for its entire war covering Southern and Eastern England. The Regiment was placed in suspended animation in April 1946 at RAF Attlebribge, Norwich. It was re-constituted as 604 (Mixed) and 625 (The Royal Fusiliers) Light Anti-Aircraft Regiments 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.
| Sep 39 | 10th Royal Fusiliers (69 Searchlight Regiment) | London, UK | |
| Aug 40 | Became RA | ||
| Aug 40 |  |
2 Anti-Aircraft Division, 41 Anti-Aircraft Brigade | East Anglia, UK |
| Aug 43 |  |
3 Anti-Aircraft Group, 64 Anti-Aircraft Brigade | South West England |
| Sep 44 | |
1 Anti-Aircraft Group, 56 Light Anti-Aircraft Brigade | Suffolk, UK |
| 1945 | |
5 Anti-Aircraft Group, 33 Anti-Aircraft Brigade | East coast England |
Batteries
| Sep 39 | 456, 457, 458 |
| Aug 41 | 456, 457, 458, 561 |
| Jan 43 | 354, 456, 457, 458, 561 |
| May 43 | 354, 456, 457, 458 |
| Mar 44 | 354, 456, 457 |