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

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

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

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

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

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

Video: MI5 Director General warns Russian spies are 'on a sustained mission to generate mayhem' This year MI5 tracked down ...

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

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