Helen Naylor, who has spoken to us on several previous occasions, will give us a talk exploring the connections between London and espionage.

"London has long been a city of spies and spy catchers, from the days of Queen Elizabeth I and her vast spy networks rooting out Catholics spies to the damage done by Russian double agents Kim Philby and friends in the 1950s. Internationally known secret agent James Bond and his creator Ian Fleming's lives are intertwined with the secret service in London, whilst  fictional spy-catchers John Le Carre's George Smiley and Mick Herron's Jackson Lamb track traitors and enemies of the state in the capital's corridors and streets. The scarcely believable radioactive poisoning of ex-Russian spy, Alexander Litvinenko in a central London hotel by Russian agents in 2006 illustrates the highest stakes are still at play in this murky and desperate world".