Admission of Kim Philby's Espionage

Date: July 1, 1963 • Location: London, United Kingdom

The British Government admits that former diplomat Kim Philby had worked as a Soviet agent.

Harold Adrian Russell "Kim" Philby was a British intelligence officer and a double agent for the Soviet Union. In 1963, he was revealed to be a member of the Cambridge Five, a spy ring that had divulged British secrets to the Soviets during the Second World War and in the early stages of the Cold War. Of the five, Philby is widely considered to have been the most successful in providing secret information to the Soviets.