Five Cambridge University graduates served as double agents, leaking highly classified information to the Soviet Union ...

Confessions of double agents and tips for new spies have been released as part of a tranche of recently-declassified ...

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

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 ...

The files about royal art historian Anthony Blunt are among a trove from the intelligence agency MI5 released Tuesday by ...

MI5 reveals confessions of three members of infamous Cambridge Five spy ring as tranche of documents released into National ...

Queen Elizabeth II wasn’t told details of her long-time art adviser's double life as a Soviet spy because palace officials ...