Chris Phillips, former head of the UK's National Counter Terrorism Security Office, told the Mirror: 'There will be concerns ...

The UK's terrorist threat level is currently classified as "substantial," meaning an attack is considered likely.

Head of MI5 Ken McCallum has been knighted in the New Year Honours. Sir Ken is made a Knight Commander of the Order of the ...

MI5 is being forced to 'pare back' its fight against counterterrorism due to growing threats of meddling from Russia and other aggressive countries. Security agency boss, Ken McCallum revealed ...

Actor plays spy chief Jackson Lamb in the Instagram post swapping the fictional Slough House for Thames House, headquarters ...

MI5 issued an alert that Christine Lee had engaged in "political interference and activities" for a branch of the Chinese ...

Head of MI5 Ken McCallum has been knighted and artist Barbara Rae has been made a dame in some of the highest honours awarded ...

The allegations will heap more pressure on the beleaguered Duke, who has said he has severed all ties with the individual ...

Reprising his most recent role as a spy for the intelligence agency, Oldman puts a London spin on The Night Before Christmas.

MI5 kept a file on former Cabinet minister Louise Haigh because of fears about her relationship with a nationalist politician, security sources have told The Mail on Sunday. The concerns – which ...

Slow Horses star Gary Oldman has revealed a surprising collaboration with MI5, with the star narrating a Christmas poem.

Ministers are warned against 'robbing Peter to pay Paul' after the director of MI5 says the intelligence agency had been ...