There are a few good things in the UK. I'm planning to go to Paul Gordon's thing in September, the International Magic Convention is in London in November, and then the Session is in January (Ray Kosby's going to be at the next one). And, talking of 2012, Blackpool's going to be hosting FISM in July, as well as the regularly scheduled convention in February. And that's just the tip of the iceberg. I recommend
MagicConventionGuide.com for details of other stuff.
In other words, there's loads of things on. I'm starting to save up now, as September 2011 to June 2012 looks like an expensive and busy conventioning schedule!