Personal favourites are:
South London Soul Train at the Bussey Building in Peckham - A lot of variation in the music across four floors, plenty of space for dancing, well behaved crowd (also helps this is a ten minute stroll from my house).
Corsica Studios in Elephant and Castle - not any night specifically, (though I really wanna go to their Hyperdub one https://www.residentadvisor.net/reviews/20588). If you enjoy electronic music this is probably the best club in London for dancing/hearing quite out there stuff expertly selected.
Really enjoy the Saturday night at Phonox which is about 7 quid on the door. Mostly techno here though and have had mates a little bored of the music.
I don’t venture North or East that often for a night out due to the hassle of getting home, but have had a lot of good nights at XOYO (just make sure it’s not a student night), Oval Space and Oslo. Also hear lots of good things about the Nest.