Looks like the popular genre convention Alt Fiction is going to be held this year, after its absence in 2009, with the current projected date being 12 June 2010. Details so far are rather sketchy, though the con will once again take place in Derby. There's usually a good turnout of authors, editors, agents, reviewers and other genre folk, and a host of panels and discussions throughout the day.
Mark Charan Newton has already threatened to gatecrash the event by holding a launch party for his upcoming book City of Ruin, which should be fun (even more fun if we can get him drunk beforehand - that'll be one of my goals for the day).
Anyway, more details as and when. I'll probably be attending, though will no doubt end up in the bar (along with 99% of the other attendees).
The event's official website can be found here.