Party venue hire: your recommendations

Turning 40 in Feb and fancy myself a bit of a party. Started looking for a venue a while ago but then life got in the way, and now it's only two months away...

Requirements:
Late-ish licence - till 1am at least, ideally later
Free or cheap (under £200) to hire, or with reasonable min bar spend
Space for 80-100
Decent soundsystem, ideally with turntables and mixer at very least, preferably CDJs too
Prefer south-east (live in Brockley) or central, but would consider anywhere so long as close to transport links

What you got, Luffguss?

Prince Regent in Herne Hill, talk to Matt, give him a kiss from me...

He can get you a late licence if you ask nicely, like all pubs, they're limited to a certain amount of these every year...

You'll have a great time, I've had a couple of parties up there... And don't let your world famous DJ mates get away with being dicks to the staff... X

Thanks, man. Looks decent. No divas behind the decks, I assure you.

@Timmy2wheels The Nun's head have a smaller room than The Regent, if you want that sweatbox effect. Actually not that small.

Cheers, man. Think I've been to a comedy night up there. Bit small for my many international friends. Also not sure there's a bar in the room, which is key to not being alone whilst playing your carefully-selected party bangers (to the few people not smoking outside).

Final punt. Prince Regent is a great option and one to fall back on, but it is a bit far south/ not that well connected for folk oop north. Any suggestions around Old St/ Angel/ Kings Cross?