All changes to tower
| Date | Change | Source |
|---|---|---|
| 31 Dec 2017 | Despite tenor nominal(C-27c), ring key amended to B | Nick Bowden via pNBR |
| 1-6: nominal added | Nick Bowden via 00012688 | |
| 12 May 2014 | Indication of toilet facility added | TimJ#199 via e-mail |
| 29 Sep 2009 | 1-6: frameid added; frame info added | Simon Ridley via e-mail |