From the moment the glass-box express lift whisks you 38 floors up the face of Heron Tower, this cocky Japanese/Latino fusion pile screams ‘Las Vegas’ – a vision of slick selfie-stick perfection and pizzazz aimed at the big-money crowd. The later the hour, the louder the DJs and the livelier the scene as booze-fuelled high rollers ramp up the party vibe. To drink, investigate Asian-inspired takes on the classics: a Gimlet doctored with coconut and kaffir leaf, a Martini involving Grey Goose La Poire Nashi or a Negroni manqué made with Hibiki Japanese whisky and plum liqueur. If the latter doesn't warm you up, the fire pits and snuggly blankets on the breezy sky terrace should do the trick. With its centrepiece alfresco bar under the flame and metallic leaf canopy of a giant tree sculpture, this is a soothing sanctuary away from the mayhem.