At the heart of the case is the violent abuse of a woman by a state agent under MI5's control. After the BBC began ...

MI5 is facing fresh scrutiny in the case of a violent neo-Nazi agent after a High Court judge said he had "no confidence" in the Security Service's account of how a senior officer gave false evidence.

IPCO began its secret investigation into MI5's handling of the agent - a genuine neo-Nazi known publicly as X who informed on extremist networks – in 2022. It was prompted by a BBC story about how X ...

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

The security service MI5 has discovered hundreds of new documents on the agent in the IRA, known as Stakeknife, which were not previously disclosed to a major police investigation.

Thames House, the headquarters of the British Security Service (MI5) is seen in London, Britain October 22. Andrew Parker, the head of MI5 has warned about the "three-dimensional threat" that ISIS ...

The Security Service (MI5) and the Secret Intelligence Service (SIS orMI6) began operations in October 1909 as a single organization, the Secret Service Bureau, based in premises rented by a ...

MI5 withheld critical information from the home secretary when it applied for warrants to gather telephone and internet data, Britain’s most secret court has heard. The security service is ...

Prince Andrew demanded a face-to-face meeting with Sir Ken McCallum, the director of the UK's Security Service MI5, after his longtime close confidant was accused of being a Chinese spy.

Senior judges held out the prospect of holding MI5 officers in contempt as they ordered an independent investigation into how ...

FutureSentry, Mi5 Security, Helen Wattie, SSNMIAMI—FutureSentry, a developer of automated detection solutions, today announced it has entered a strategic agreement with Mi5 Security, a provider of ...

A UK tribunal has been told that security service MI5 has been breaching surveillance laws since 2010, and unlawfully obtaining bulk surveillance warrants against the public. Human rights groups ...