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

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 ...

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

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

Two of the Cambridge spies, Donald Maclean and Guy Burgess, fled to Russia in 1951. A third, Kim Philby, continued to work ...

Secret UK Files Detailing Confessions of Cambridge Five Spies Released By Michael Holden LONDON (Reuters) - Top secret MI5 files detailing first-hand accounts of confessions of three of Britain's ...

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

Philby and Blunt were, along with Guy Burgess, Donald Maclean and John Cairncross, part of the "Ring of Five" - former Cambridge University ... and equipment used by spies in the agency's 115 ...

Two of the Cambridge spies, Donald Maclean and Guy Burgess, fled to Russia in 1951. A third, Kim Philby, continued to work for foreign intelligence agency MI6 despite falling under suspicion.

The secrets and betrayals poured out of the art historian as he revealed his secret schemes with the Cambridge spies to betray his country. However, he was never prosecuted, was later knighted ...