Anthony Blunt, who worked at Buckingham Palace as Surveyor of the Queen’s Pictures, was secretly a Soviet spy during WWII.

Jan. 14 (UPI) --Documents newly declassified by MI5, Britain's internal intelligence agency, show the late Queen Elizabeth II was not informed for almost 10 years that a member of her staff had spied ...

Rookie wartime MI5 "watchers" were advised they needed to be prepared to offer a big tip if they had to tell a taxi driver to ...

A defendant in an alleged Russian spy ring case told police he had already spoken to MI5 when he was arrested, the Old Bailey ...

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

Confessions of double agents and tips for new spies have been released as part of a tranche of recently-declassified documents from MI5. The documents are part of a new exhibition on display at the ...

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A World War II-era tailing guide is among declassified records shedding light on spy game in MI5: Official Secrets, at the National Archives.

Avoid false beards, carry plenty of spare change and know what to do when you need to tell a taxi driver "follow that cab!" - ...

Papers released by MI5 show that although Blunt confessed to them he had spied for the Russians during World War Two, the ...

Some MI5 material relating to its involvement with a teenager who was charged with terrorism before she took her own life is being “withheld” from her inquest but is “not a cause for concern”, a ...

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