All changes to tower
| Date | Change | Source |
|---|---|---|
| 7 Dec 2012 | PN info removed (no regular practice) | Keith Gatman (info: Stuart Clarke) via e-mail |
| 5 Jul 2010 | 6: date amended | John Baldwin via database |
| 4 Jul 2010 | 1-6: frame id added; frame info added; 5: welded(1992) | James Clarke via e-mail |