All changes to tower
| Date | Change | Source |
|---|---|---|
| 3 May 2017 | Wed PN previous rota 'not followed for some time now' | Sam Bolingbroke via L+Mmail |
| 12 Jun 2015 | 1-6: nominal added | David Kelly via 00011224 |
| 21 Mar 2010 | PN now 4th Wed | L&M 2009 Report via JCB |
| 15 Apr 2009 | Thu PN: CHECK beforehand added | L&M 2008 Report via JCB |