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

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

Slow Horses' Ruth Bradley discusses Flyte's complex feelings towards Slough House and Taverner's rise to First Desk in the ...

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

Britain might already be at war with Russia, a former MI5 chief has warned, pointing to the rising number of cyber attacks as well as sabotage and covert operations on UK soil. At such a critical ...

MI5 has offered an “unreserved” apology to the High Court saying there had been “failings and errors” in legal proceedings related to an alleged source accused of abusing two women. An injunction was ...

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

MI5 disrupted a plot from China against the UK as recently as last week, the spy agency’s head, Ken McCallum, said, as he expressed frustration at the collapse of a trial of two alleged spies.

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

LONDON -- Stella Rimington, the first female chief of Britain's MI5 intelligence agency and later a successful thriller writer, has died, her family said Monday. She was 90. The first woman to head a ...

Security Service director general Sir Ken McCallum said the potential risk from artificial intelligence could not be ignored.

The suspected Huntingdon train knifeman was “not known to counter-terrorism police, the security services or the Prevent ...