John Cairncross

John Cairncross was a Scottish intelligence officer and a member of the 'Cambridge Spies,' known for leaking sensitive information to the Soviet Union. He was one of the last of the group to be publicly identified as a spy, and he admitted to his espionage activities in the 1990s. Cairncross's contributions to Soviet intelligence during the Cold War underscored the extensive infiltration of British institutions by communist sympathizers.