All changes to tower
| Date | Change | Source |
|---|---|---|
| 3 Dec 2015 | Indication of toilet facility added | Ian Oram via e-mail |
| 15 Jan 2010 | 5: historically important ('listed' by CBC) | David Knight via e-mail |
| 4 Jun 2009 | 1,4: precise weight substituted for estimate; 3: date is approx | Philip Denton via e-mail |