Jeff's idea in the post below this one is so good that I am trying the same thing. Check out the wiki at http://s3.amazonaws.com/s3wiki/wiki/MikeCulverLondonMay2007
I plan to be in London to speak at Internet World on either May 1 or May 2 (which day is not finalized yet). I'll be speaking about Amazon Web Services (of course) , and am able to do the same with you or your group. Accordingly this is an opportunity for community scheduling.
You are invited to schedule me for a meeting, a user group presentation, classroom visit, a pint, or whatever else makes sense. Simply edit the wiki page and add your event (make certain I can travel to your appointment from whatever else is on the calendar, with time to spare). Happy to correspond privately if you don't want to post to the wiki. Simply email awseditor at amazon.com.