Wondrously exotic lounges such as The Blue Bar and Artesian are the late David Collins’ legacy to London's cocktail scene, but at his creative peak, the Irish designer came up with this fabulously ethereal bar at Nobu Berkeley St – the Tardis as imagined for a Japanese remake of Doctor Who, perhaps. Once inside, you can pair Eurasian tapas and sushi platters with silkily superior saké, pedigree French fizz or a selection of top-notch Tokyopolitans. Nifty ideas include Nashi Bottle (a pear, rosemary, orgéat and Russian vodka sour, served in a milk bottle) and Silk Road (a Manhattan based on Nikka whisky, dates and Grand Marnier). Otherwise, One Shade of Grey (a blue Curaçao-laced twist on a Negroni, ‘served sadistically short’) is a cheapish thrill, while Japanese Painkiller (Nobu's take on New York's modern whisky classic, Penicillin) reportedly cures all ills.