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This tour of Mayfair looks at the area's connections with espionage and secrecy. The hotel where a Russian Security Service Officer was poisoned, the club premises from where spies were recruited in the early 20th century and a house where an art dealer hosted drinks parties for friends including Kim Philby, Guy Burgess, Antony Blunt and several leading members of MI5 and MI6 all feature.

Diane Burstein is a qualified London Blue Badge and City of London Guide and author of London Then and Now.