In new guidelines released this week, the UK Home Office said that such activities could violate stringent national security ...

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

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

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

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

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 ...

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

Security industry guns-for-hire are warned they could face jail time if they work for hostile states — even accidentally.

Newly released MI5 files from the National Archives reveal that British intelligence monitored potential connections between French government interests and nationalist movements in Scotland and Wales ...

The UK faces a substantial terrorism threat level, indicating an attack is likely, according to Pool Re’s 2024 Annual Threat ...

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