All changes to tower
| Date | Change | Source |
|---|---|---|
| 5 Jul 2022 | 2: weight amended | Whitechapel records via David Sloman |
| 3 Feb 2017 | 1-6: nominal added | David Kelly via e-mail |
| 8 Jul 2016 | 1-6: frameid added; frame info added | David Sloman via e-mail |
| 2-6: turning added; fr1: truss,layout added | John Baldwin via database | |
| 29 Jan 2012 | No longer any practice: PN info removed | David Floyd (info: Christine Brenton) via e-mail |
| 6 Oct 2009 | 2,3,4: canon info added | [George Massey] via e-mail |
| 12 Mar 2008 | PN is now Fri not Thu | David Floyd (Assn webmaster) via e-mail |