Fancy eating in the (tortured metaphorical) footsteps of Christine Keeler? Head down to Café Daquise in South Ken for Polish food and vodka – this is where she used to meet her Russian lover. Or check out the old dead leter drop at the Brompton Oratory. It’s harking back to an era before spying was all about disabling your enemies’ computer systems – blimey, we never thought we’d be wistful for the days of Cold War and imminent nuclear destruction.