The head of Britain’s domestic security service said Russia’s military intelligence service was pursuing “dangerous actions ...

The risk presented by Islamic State terrorism and hostile states such as Iran and Russia has surged in the last year, the spy ...

In a rare public speech setting out the major threats to the United Kingdom, Ken McCallum argued that hostile states, ...

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

Britain is facing a “staggering rise” in assassination attempts on its soil by Russia and Iran, as the hostile states recruit ...

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

The UK's domestic intelligence agency head said that the number of state-threat investigations undertaken by his agency had ...

Russian military intelligence is seeking to cause "mayhem" across Britain and Europe, the UK's domestic spy chief said on ...

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

The head of MI5 revealed during a briefing that Iranian intelligence services have been using UK criminals as proxies acting ...

Director-general Ken McCallum was speaking at the Counter Terrorism Operations Centre in west London on Tuesday.

The BBC has been given rare access inside MI5’s headquarters in London to meet a senior intelligence officer who shares what it was like to discover he was neurodivergent. Liam was chairing a ...