I'm Convention-Hungry, Guys!

So after all these weeks I'm still having withdrawal symptoms from Destination Star Trek London, so I'm asking everybody who's reading this for some help! Does anybody know of any convention coming up in 2013 in the UK for Doctor Who, Star Trek or Sherlock (omg do they even have Sherlock conventions they'd be AMAZING)? Please! Just give me the name and I'll google it myself and everything, come on guys!

Or if you don't want to do that, give me a prompt or something for a Star Trek (TOS or TNG) or Sherlock fanfic.

Come on, you know you want to!