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 ...

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 Queen’s Private Secretary, Sir Martin Charteris, shared her composed reaction in a handwritten letter summarised by the head of the Security Service in a Top Secret memo. That memo is just ...

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 ...

LONDON (AP) — Queen Elizabeth II wasn’t told details of her long-time art adviser's double life as a Soviet spy because palace officials didn’t want to add to her worries, newly declassified ...

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 ...

Some of the newly released documents will feature in an exhibition, entitled "MI5: Official Secrets," opening at the National Archives in London later this year.Two of the Cambridge spies ...