Who:   London's elite willing to pay £700 a year for a membership. If your holier-than-thou attitude matches the staff's then you should feel right at home.
What:   Urban minimalist space of all wood and glass, this high-toned spot has its reception on the ground floor where membership credentials are inspected as if guests are crossing into East Berlin circa 1962. Guests are then whisked to the fourth and fifth floors for a view of the city accompanied by great food and drink.
Why:   Because it's ultra exclusive, and given the amount of snobbery, the prices are not all that bad. But what's with the lobby sign that says “No Suits.” Is that an attempt at irony?