I agree gatecrasher in the main room will be brill, but you never know, Tidy might be OK too.
I was out on Saturday night to see Lee Haslam and Johnny Dangerous from Tidy and they both played excellent sets - especially Lee Haslem. Started his set with some strange music and I thought "what the ...." but 2 minutes later the place erupted as he played some quality tunes.
The rest of his set was really uplifting and all his mixing was seamless. I would definitely recommend going to see Lee if anyone gets the chance. I was knackered by the end of the night - haven't danced like that for ages.