NIGEL WEST has written numerous books on security and intelligence topics and was voted 'The Experts' Expert' by The Observer. He is the recipient of the US Association of Former Intelligence Officers' first Lifetime Literature Achievement Award and has spent many years at the Counterintelligence Centre in Washington DC. His highly acclaimed works include Double Cross in Cairo: MI5 in the Great War, Operation GARBO: The Personal Story of the Most Successful Spy of World War II, Churchill's Spy Files and Spycraft Secrets (2017).