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 ...

Thomas ‘Cash’ Mellon has walked away from the New IRA amid pressure from his own ‘ceasefire’ colleagues and MI5.

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

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 ...

The manual gives instructions on preferred appearances, disguises and how to follow targets – but warns against fake ...

Critics warn counter-terrorism police and MI5 will be swamped with thousands more cases involving people not considered to be ...

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 ...

Queen Elizabeth II was not officially informed for nearly a decade that Anthony Blunt was a Soviet spy, newly declassified ...

Widening the definition of terrorism could overwhelm the police and MI5, the lawyer carrying out a review of the definition has warned. Jonathan Hall KC, the independent reviewer of terrorism ...

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

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