Anthony Blunt

Anthony Frederick Blunt (26 September 1907 – 26 March 1983), known as Sir Anthony Blunt, KCVO, from 1956 to 1979, was a leading British art historian who in 1964, after being offered immunity from prosecution, confessed to having been a Soviet spy. He had been a member of the Cambridge Five, a group of spies working for the Soviet Union from some time in the 1930s to at least the early 1950s. A closely held secret for many years, his status was revealed publicly by Prime Minister Margaret Thatcher in November 1979, and he was stripped of his knighthood immediately thereafter.