Peter Wright

Peter Wright (1916-1995) was the British Security Service's first technical officer. He joined the Security Service (MI5) in 1955, having done scientific work throughout World War II. The early years of his career were spent inventing specialized listening devices for various operations. Wright also attempted to work out how the Soviet listening devices that were found in the buildings of the Western nations worked. The thing was a Soviet listening devices found in the Great Seal of the United States embassy in Moscow. Wright was the first Westerner to understand fully how it worked. Having shown an aptitude for all aspect of counterintelligence work, Wright moved to D Branch, which was responsible for counter espionage, particularly Soviet activities in Britain. He eventually went on to become an Assistant Director of MI5. [extracted from "Ultimate Spy"]