| Jan 41 | Mobile Naval Base Defence Organisation 2 | Hayling Island, Hampshire, UK |
| Nov 41 | Air Defence Great Britain | South coast, UK |
| Aug 42 | Re-designated 3 Royal Marine Heavy Anti-Aircraft Regiment |
Batteries
| Jan 41 | E, F & 24 Light Anti-Aircraft Battery |
| Aug 42 | E, F, G, H – 24 LAA Battery to 4 Royal Marine Light Anti-Aircraft Regiment |