Nestled within Chiltern Firehouse, it’s the club everyone’s (still) talking about – and few (still) can set a well-heeled foot in. Exclusivity is at the core of this subterranean rendezvous of the rich and recognised: Ms Kate Moss, Ms Poppy Delevingne and Ms Naomi Campbell have all been granted the right to enter. Interest piqued? Try your luck. Bouncers require a special gambling chip or playing card to let you in.