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 ...

WWII-era guide for UK spies to go on display Avoid facial disguises, carry loose change and be ready to make split-second decisions: just some of the advice Britain's domestic spy agency gave recruits ...

Sir Anthony Blunt, the Royal Family's picture surveyor and renowned art historian, finally admitted that he had been a Soviet ...

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 ...