http://meta.wikimedia.org/wiki/Wikimedia_UK we find past meetings listed as follows:
* 9th October 2005: London * 16th October 2005: IRC * 13th November 2005: IRC * 27th November 2005: London * 15th January 2006: London
And Jimbo was present at the 27th November meeting.
http://meta.wikimedia.org/wiki/Image:The_Royal_Oak_bootstrap_meet.jpg
:-)
Gordo