Mmm. At the moment, nothing. I'll do the questions on the site nearer the time, but I'm not really keen on buying anything for the exam - I'm pretty sceptical about how helpful it'd be, to be honest...
Perhaps sudoku and stuff would help to speed the brain up? And maybe some bland reading in the days leading up to it to bring my reading speed up a few notches...
Sounds like I need some newspapers!
For BMAT, I'll go through my GCSE physics revision guide (not doing physics at the moment)... that's all I've got planned at the moment.