Confessions of double agents and tips for new spies have been released as part of a tranche of recently-declassified documents from MI5.

Cambridge spy Kim Philby had no regrets about his treachery, his interrogators said after he was unmasked.

LONDON (Reuters) - Top secret MI5 files detailing first-hand accounts of confessions of three of Britain's most notorious double agents including Kim Philby and Anthony Blunt who spied for the ...

More than 100 Security Service (MI5) files have been released by the National Archives, showing the confessions of double agents from Cambridge. The Cambridge Five consisted of Harold ‘Kim ...

A briefcase abandoned by infamous Cambridge spy Guy Burgess as he fled to Moscow in 1951 is among the never-before-seen MI5 artefacts going on display at The National Archives in Kew, south-west ...

Leaders from institutions including the University of Oxford, University of Cambridge and Imperial College London were told research in sensitive areas could be targeted by states intent on ...

They shed new light on a spy ring linked to Cambridge University in the 1930s, whose members spilled secrets to the Soviet Union from the heart of the U.K. intelligence establishment.

The files about royal art historian Anthony Blunt are among a trove from the intelligence agency MI5. Britain's National Archives also released files regarding a spy ring linked to Cambridge ...

They shed new light on a spy ring linked to Cambridge University in the 1930s, whose members spilled secrets to the Soviet Union from the heart of the U.K. intelligence establishment.

Newly declassified documents show she wasn’t told of her longtime art adviser's double life as a spy because officials didn’t want to add to her worries.