The home secretary says the government accepts the high court’s ruling that an independent investigation should take place.

Declassified records describe Hans Wilsdorf as “most objectionable” and allege he may have used his position to spread ...

Stella Rimington, the first female chief of Britain's spy agency MI5 and the inspiration behind Judi Dench's M in James Bond, ...

Tehran is deliberately overwhelming British counter-terror agencies with a stream of low-cost, deniable threats in a ...

Stella Rimington, the first female chief of Britain's MI5, has died at the age of 90. Her family says she died on Sunday, ...

Newly declassified MI5 files reveal that Hans Wilsdorf, the German-born founder of Rolex, was once suspected of strong Nazi ...

The MI5 was 'actively tasking' Britain's top IRA spy 'Stakeknife' with missions throughout his time as the Army's prized informant, unearthed documents have shown.

Retired judge John Saunders, who led the inquiry into the Manchester Arena attack, said that one MI5 officer admitted they considered intelligence about suicide bomber Salman Abedi to be a ...

LONDON—The head of the U.K.’s domestic intelligence service, MI5, said the agency is doubling the resources it devotes to tackling threats from Russia, China and Iran—and faces a growing ...

PA Images/Sipa USA The UK’s intelligence agency, MI5, has warned that the Taliban takeover of Afghanistan may have “emboldened” terrorists to carry out future 9/11-type attacks.

The MI5 operation, which lasted three years, required 45 MI5 officers (apparently known as "Pins"), 35 Northern Ireland police officers (known as "Oscars"), and cost millions of pounds in total.

Rimington, the first female head of MI5, said the service has changed dramatically just in the past decade. "Since I left, it's really become primarily a counterterrorist service," she said.