Key
| Heavy Anti-Aircraft Site |  | Airfield |  | Ordnance Factory |  |
| Site No. | Name | OS Grid Reference |
| H1 | SD 498 195 | |
| H1 | Dunkirk Lane | SD 515 223 |
| H2 | Newton | SD 450 309 |
| H3 | Hall O’ Th’ Hill | SD 603 147 |
| H4 | Hoghton | SD 614 252 |
| H5 | Hesketh Bank | SD 437 234 |
| H6 | Oswaldtwistle | SD 717 279 |