All changes to tower
| Date | Change | Source |
|---|---|---|
| 3 May 2020 | 1-8: frameid,turning added; fr1: details added | Tim Jackson via e-mail |
| 7 Jan 2008 | TowerBaseID amended to 7622 (was provisionally 9030) | Tim Jackson#127 via e-mail |
| 18 Sep 2007 | Additional tower | Matthew Higby via e-mail |