All changes to tower
| Date | Change | Source |
|---|---|---|
| 13 Jan 2024 | 1,2: weight added | See CB Derbys, Halls and Dawson via Tim Jackson |
| 17 Aug 2016 | 1-3: frameid added; frame info added | David Sloman via e-mail |
| 10 Dec 2003 | Slight grid ref correction (from SK384..) | OS map via JCB |