who could probably play London on Saturday 29th March for around £50 and bring 20 or so people (at least)?

I ask because firstly I'm sure there are loads of ace up and coming bands I'd love that I haven't heard, and secondly, my band 4 or 5 Magicians is doing a gig in London and can choose 2 bands to play, and virtually every band I know and like either can't do it, is asking for more money than we can realistically pay them, or has another London show really near.

This may turn into a jagfest I suppose but fire away with suggestions nonetheless!