All changes to tower
| Date | Change | Source |
|---|---|---|
| 9 Dec 2018 | 1: nominal added | Nick Bowden via 00013203 |
| 21 Nov 2018 | PN removed: no longer held | Ruth Graham (dep Tower Captain) via e-mail |
| 22 Jun 2011 | Mon PN on 3rd wk of month held on the Tue | Keith Gatman via e-mail |
| 19 May 2010 | 4: canon info added | John Baldwin via database |
| 11 Feb 2007 | Tenor nominal added (G-45c) | Auto added via pNBR |