Key
| Heavy Anti-Aircraft Site |  | Ordnance Depot |  |
| Site No. early | Site No. late | OS Grid Reference |
| A | H2 | SJ 716 110 |
| C | SJ 677 168 | |
| H1 | SJ 676 170 | |
| H3 | SJ 750 107 |
Gun Strengths
Battle of Britain & the Blitz
| Dates | 3 inch |
| Oct 40 | 4 |
| Nov 40 | 4 |
| Dec 40 | 4 |
| Jan 41 | 4 |
| Feb 41 | 4 |
| Mar 41 | 4 |
| Apr 41 | 4 |
| May 41 | 4 |
