The London Linux Expo is next week, Wednesday and Thursday, probably http://www.linuxexpo.co.uk/ or similar. Previous years, ALUG people have met up around lunchtime for a (not so) swift drink in the pub over the road.
Can I suggest that we continue the tradition and meet up at 1pm on the Thursday by the Association For Free Software and Debian stands? (If someone wants to arrange a Wednesday meet-up, feel free, but I can't as I'm not there...)
MJR