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

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

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 ...

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 "follow that cab" when pursuing a suspect, newly declassified documents ...

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

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 ...

The documents, on display in the National Archives in Kew, West London, suggest the organisation was keen to dismiss any fantasies about the glamour of espionage.

A World War II-era guide to tailing a target, and files on notorious double agents such as Kim Philby, feature in MI5: ...

Head of MI5 Ken McCallum has been knighted in the New Year Honours. Sir Ken is made a Knight Commander of the Order of the Bath (KCB) for his more than 25 years of service to UK national security.

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 ...

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