I think a lot of what clubs you like depends on your music preferences. Personally, my favorite club is The Fridge in Brixton. It often has nights suiting my preferences (house, hard house, trance, hard trance, funky house, and sometimes breaks). Along those lines again i also love SEone in London Bridge. Can't go wrong with Turnmills, Hidden and Ministry of Sound is classic (i know a lot of people hate it, but i just like it ). If you're a big fan of R&B clubs i wouldn't recommend any of the aforementioned (except for maybe Ministry).