Suggestions for farewell party venue in London

Hey guys, I've been racking my brain and searching the net but still cant think of a venue for a farewell party in London. So I was wondering if anyone had any suggestions on here...
Im looking for a place that can hold 20ish people, does either a guestlist or booth reservation, has a dancefloor or close to another bar that has a dance floor, mid-range in price, centralish London Shoreditch, Westend, City, possibly Camden.

Thanks heaps for the help

http://www.viewlondon.co.uk/

http://www.worldsbestbars.com/

Has many good options.

But I do quite like Zebrano Bar near Carnaby Street - loads of booths and you can reserve. It's classy too - has a cover charge to keep the mingins out but cocktails weren't ridiculously expensive compared to elsewhere.

Fluid!