Top secret MI5 files detailing first-hand accounts of confessions of three of Britain's most notorious double agents ...

The newly-declassified documents include details about some of the UK's most notorious spies.

Members of the spy ring in the 1930s spilled secrets to the Soviet Union from the heart of the U.K. intelligence establishment.

Britain’s National Archives on Tuesdayreleased declassified MI5 domestic counterintelligence agency files containing the ...

MI5 documents reveal her private secretary ‘saw no advantage in telling her’ about treachery of Buckingham Palace art expert ...

Documents newly declassified by MI5, Britain's internal intelligence agency, show the late Queen Elizabeth II was not ...

Queen Elizabeth II was not told about her long-time art adviser's double life as a Soviet spy, newly declassified documents ...

These programmes examine the gradual exposure of the Cambridge Spies and reveal how the names Burgess, Philby, Maclean, Blunt and 'fifth man' Cairncross became synonymous with treachery at the ...

BBC Archive: Originally broadcast 14 February 1956. 1956: Journalist meets 'Cambridge spies' in Moscow. Video, 00:00:501956: Journalist meets 'Cambridge spies' in Moscow Up Next. 1949: Bonn - new ...

While teaching at Cambridge University, Blunt was influential in recruiting the other three, who were all students there. Burgess became a journalist after he left university, but on the outbreak ...