Widening the definition of terrorism could overwhelm the police and MI5, the lawyer carrying out a review of the definition ...

Jan. 14 (UPI) --Documents newly declassified by MI5, Britain's internal intelligence agency, show the late Queen Elizabeth II ...

Jonathan Hall KC warned that football hooligans and criminal gangs could technically be classed as terrorists under Sir ...

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

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 ...

Confessions of double agents and tips for new spies have been released as part of a tranche of recently-declassified ...

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

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 ...

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

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

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