Key
| Heavy Anti-Aircraft Site |  | Factory |  |
| Site No. early | Site No. late | Name | OS Grid Reference |
| E | H2 | Christchurch | ST 354 900 |
| F | H3 | Pye Corner | ST 349 849 |
| G | H5 | New House | ST 301 824 |
| H | H7 | Great Oak | ST 276 891 |
| N | H4 | Nash | ST 331 833 |
| O | H6 | Pennsylvania | ST 261 852 |
| P | H1 | Lodge Farm | ST 329 915 |
Early coding sequence integral with Cardiff & Swansea
Gun Strengths
Battle of Britain & the Blitz
| Dates | 3.7 inch static | 3.7 inch mobile | 3 inch |
| May-Jun 40 | 0 | 0 | 4 |
| Jul 40 | 0 | 8 | 4 |
| Aug 40 | 6 | 8 | 2 |
| Sep-Oct 40 | 12 | 8 | 2 |
| Nov 40 | 12 | 8 | 0 |
| Dec 40-Mar 41 | 12 | 4 | 0 |
| Apr-May 41 | 12 | 8 | 0 |
Overlord & Diver
| Dates | 4.5 inch | 3.7 inch MkVI | 3.7 inch static |
| Mar-Jul 44 | 12 | 0 | 24 |
| Aug 44 | 16 | 0 | 16 |
| Jan 45 | 9 | 11 | 4 |
Heavy AA Regiments known to have occupied sites in this GDA
