Newly-declassified files show the Queen was only told the full story a decade after the Cambridge don and royal courtier confessed he was a KGB spy.

A closer look at recently declassified MI5 files on the intelligence failure surrounding the five "Cambrdige spies" ...

It has been revealed that a Russian spy had worked for the Royal Family for several years. However, Queen Elizabeth was kept ...

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

Newly released MI5 files from the National Archives reveal that British intelligence monitored potential connections between ...

Sir Anthony Blunt, the Royal Family's picture surveyor and renowned art historian, finally admitted that he had been a Soviet ...

Will we ever tire of the Cambridge spies? Kim Philby, Anthony Blunt, Burgess and Maclean – and to a lesser extent John ...

New archival material released in the UK have revealed some unexpected details about one of the biggest spy scandals ...

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

The National Archives has released declassified MI5 files, including the confession of a civil servant who worked in the Cabinet Office, Treasury and Foreign Office in the 1930s, 1940s and 1950s – and ...

The files about royal art historian Anthony Blunt are among a trove from the intelligence agency MI5 released Tuesday by Britain's National Archives. They shed new light on a spy ring linked to ...