Pressed by the MEN, Ken McCallum said he was 'very sorry' his officers did not seize the 'slim chance' they had to stop ...

The head of MI5 says Britain is facing a staggering rise in attempts at assassination, sabotage and other crimes backed by ...

An assertion by the head of the UK's MI5 security service that Russia's GRU military intelligence agency is bent on causing ...

The UK has seen deadly terrorist attacks on its streets despite the efforts of British spies to target and locate individuals ...

ISIS and al Qaeda present a “resurgent” threat to the United Kingdom, the head of the country’s domestic security service ...

James Callis told UPI the Claude Whelan, the MI-5 director he portrays on "Slow Horses," means well, but is in over his head ...

The head of MI5, Ken McCallum, has issued a stark warning about the increasing terror threat from children in Britain. Over ...

MI5's Ken McCallum warns of Russian chaos, Iran plots, rising terror threats, and increasing youth radicalisation in the UK.

The court case continues for Daniel Khalife, who is accused of spying for Iran. Khalife said in court that everything he gave ...

Ken McCallum says Russian intelligence agencies are also on a ‘sustained mission to generate mayhem on British and European ...

Russia's intelligence agency has been on a mission to generate "sustained mayhem on British and European streets", the head ...

Russian spies are “on a sustained mission to generate mayhem in British streets”, the head of MI5 has said. Ken McCallum said ...