All changes to tower
| Date | Change | Source |
|---|---|---|
| 23 Jul 2017 | U/r and unsafe tower info noted (no chiming even since 2005) | TimJ (info: R Graham; N Semley) via e-mail |
| 1-3: turning added; 1,3: canon info added; frame: layout added | Tim Jackson via 00012314 | |
| 12 Apr 2017 | 1-3: frameid added; frame info added | David Sloman via e-mail |
| 13 Oct 2011 | 1: historically important | David Knight via e-mail |