This excellent Mayfair nightclub has been around for about 20 years with a radical redo in 1996. The house music is sort of funky but the spot's a favorite with the Sloane Square rangers, the titled crowd that once included Princess Di. Events vary from night to night, so it's best to call early.
Weekends can be a touch ticket.
So explore a combination deal with Maze, the club restaurant, and one of the best in London. Hit the upscale tailors for some spiffy 'club duds' and leave the Levis at home.