All changes to tower
| Date | Change | Source |
|---|---|---|
| 23 Oct 2020 | 1-8: turning added; fr1: details added | Chris Pickford via 00014078 |
| 27 Sep 2020 | 1-8: frameid added | Lewis Benfield via 00014016 |
| 20 Nov 2006 | Tenor nominal added (E-11c) | GAD spreadsheet via pNBR |
| 21 May 2004 | National Trust ownership shown | via JCB |