All changes to tower
| Date | Change | Source |
|---|---|---|
| 17 Oct 2016 | PN now weekly; amended URL provides a check route | Michael Keeler-Walker via e-mail |
| 3 Apr 2012 | Practice not always held: check advised; URL amended | Michael Keeler, Tower Captain via e-mail |
| 2 Sep 2011 | Ring key is Ab even though tenor nominal: G+31c | Sam Austin nominals via pNBR |
| 20 Aug 2011 | 1-6: nominal added | Sam Austin via 00009575 |
| 5 Jan 2004 | URL amended | Dickon Love via e-mail |