Have lunch with the inmates of a high security prison, stroll through a sex shop into a Mexican restaurant, sing your heart out in a clandestine Korean karaoke club, tap your toes in a gypsy swing club, get pickled in a marooned Irish pub, join the sixties club that’s still swinging, drink cappuccinos made by murderous bikers, play petanque in a central London cellar, tap an oak-tree trunk for whisky ...