Slow Horses season 5 concluded with one of the most intense and surprising episodes of the series to date, ultimately seeing ...

In an annual speech, Ken McCallum says the security service is operating in "a new era" with terrorism remaining an "ever-present threat".

Sir Ken McCallum, Director General of MI5, said the security service routinely uncovered plots to carry out surveillance, sabotage, arson or acts of physical violence in the UK ...

Slow Horses Season 5 ending explained as the finale wraps up the London Rules chapter. The episode reveals secrets about ...

The head of Britain’s domestic intelligence agency says China poses a daily threat to the United Kingdom’s security.

The MI5 chief accused Moscow, Tehran and Beijing of continuing to undermine the UK’s national security through espionage, cyberattacks and intimidation campaigns.

LONDON (Reuters) -Britain's domestic spy agency MI5 issued a rare public warning to members of parliament on Monday that they are being targeted by spies from China, Russia and Iran in an attempt to ...

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 hearing ...

The intelligence agency warned MPs and their staff to look out for spies trying to elicit information from them by blackmail or phishing attacks.

Slow Horses Season 5 has upped the stakes with a terrorist plot revolving around the mayoral campaign in London.

On the latest episode of Queens, Kings and Dastardly Things, Robert Hardman and Kate Williams chart the life of Sir Anthony Blunt, whom Williams brands Britain's 'ultimate traitor.' Blunt, a distant ...

The security service MI5 has handled large amounts of personal data in an "undoubtedly unlawful" way, a watchdog has said. The Investigatory Powers Commissioner said information gathered under ...