I know it's quite early, but I wanted to put forward the information that I'll be in London in late NOvember. I was able to save significantly on the price of the ticket by flying in on Sunday morning rather than Monday, with the pleasant side-effect of hopefully having an opportunity for a Sunday afternoon meetup.
This will be: 27 November
I do not yet have a hotel reservation, but it is my usual custom to stay at a small hotel near Victoria Station. I'm reasonably functional in London in terms of finding my way around, despite having the handicap of only speaking a foreign language (as Jack and Naree would have it ;-)).
--Jimbo