london is magnificent - i suggest you:
1. ...
In addition to all this useful stuff, for clubs see
here
There are some great parties on over that weekend

Worth chucking in a mention of Fabric, easily one of the best clubs in the world, stay past 3am and the tourists empty out and the vibe improves... there is also a new 2000+ person venue call Printworks that looks amazing.
Defo check what's on at the barbican, and if you do this on a Friday then the food market on Whitecross street is several shades of awesome.
This place for the best salt beef in London, and brick lane also has cafe 1001 (often day parties) and rough trade for record shopping as well as all kinds of other stuff on depending on the day.. it's also round the corner from spitalfields market, great at the weekend.
The Tate Modern has been extended so is even bigger, and the southbank is a great walk from london bridge & borough market (food to please everyone!), down to to waterloo... southbank centre.
The Design Museum has also moved to a new location, depending on where you end up, it's worth a gander.
Camden is indeed a shadow of it's former self... but if you're in the area, the stalls are alright and the canal is a nice walk... but defo wont be a highight, unless you've never been?
Plan your days, 1+ on not bothering with the tube for short journeys if you can help it, get to where you are going and explore... in three days you could do the southbank, a couple of museums, eat some amazing food and go to a decent party !
