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 ...

Some MI5 material relating to its involvement with a teenager who was charged with terrorism before taking her own life is ...

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

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

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 documents reveal.

Despite advances in electronic surveillance, security service MI5 still relies on human ‘watchers’. Government documents ...

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 declassified British documents show that 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 ...

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