All changes to tower
| Date | Change | Source |
|---|---|---|
| 2 Feb 2021 | 1-6: nominal added; 1,3-4: diameter amended; key amended S | Nigel Taylor via Email |
| 26 Jul 2020 | 1-6: frameid,turning added; fr1: details added | [James Hedgcock] via e-mail |
| 17 Dec 2013 | PN info added | Rosalind Martin (info: Valerie Harris) via e-mail |
| 15 Jul 2012 | (W+P) URL added | Rosemary Oakeshott via e-mail |
| 10 Jan 2004 | Slight change to dedication to match Crockford entry | JCB via JCB |