On one hand I'm sorry for doing the Londoncentric thread; on the other, I'm not, because I live there

Anyway, as we all know the best and coolest thing to be able to do is be the person who knows of a bar/pub that is still open when all others are closing. On one hand this encourages alcoholism and the dangers associated with alcohol consumption; on the other hand something something. Let us share this knowledge and impress our horrible friends.

Aldgate: The Castle
Pretty disgusting dive pub where the bouncer charges you an indiscriminate amount to get in depending on the look of you. The music is bad.

Whitechapel: Indo.
Pretty disgusting, but really good. The barman may be mental. They serve dark budvar.

Soho: Crobar.
Absolutely disgusting. Pretty metal.

Kennington: The Doghouse.
Lovely late-opening pub. Serves that cloudy cider that make you go blind.