MASK: MI5's PENETRATION OF THE COMMUNIST PARTY OF GREAT BRITAIN by Nigel West

(Subject: Intelligence, Espionage, Reconnaissance & Electronic Warfare) An account of the British Security Service's dramatic interception of secret signals to Moscow from a hidden base in London uncovered the true extent of Soviet espionage in Britain. Intelligence expert Nigel West reveals how MASK, the codename for one of the most secretive sources ever run by British intelligence, enabled the British Government to monitor the activities of the Communist Party of Great Britain and track wireless traffic between the Soviet Union and its Comintern representatives abroad during the mid 1930's. The Government Code and Cipher School was one of the most secret branches of Whitehall, under the command of the Secret Intelligence Service, and used its covert intercept station in South London to make vital advances in the intelligence war. This gripping account exposes for the first time how the Communist Party of Great Britain was infiltrated and details the actual contents of its communications with the Soviet Union. (Published: 2005) (Publisher: Routledge) (ISBN: 0415351456) (Pagination: 324pp,158pp of transcipts of radio traffic) (Condition: like new in dw) UL-XXXXXX