If you like the colour purple, then you'll love this place. Housed in Soho's ultra-posh Sanderson Hotel, this upscale bar invites patrons to gather at the end of the day, sip martinis, and discuss the day's events or make plans for the night. Located just off the lobby, the bar is dramatically decorated with intimate cafe tables, Queen Anne chairs, Venetian mirrors, and a color scheme, as the name would suggest, of purples, lavenders and violets. The billiard room features a floating staircase, antique pool table, and impressive, John Piper-designed stained-glass window. Non-members are advised to make a guest list reservation. TUBE: Goodge Street or Oxford Circus