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.

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

The Security Service then repeated the lie to a specialist court, where the woman attacked with a machete - known by the alias Beth - is seeking answers about MI5's handling of its agent ...

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.

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 ...

British security services thwarted 15 Iranian plots to murder or kidnap people in the UK. But more funding is needed to ensure MI5’s continued success, the UK’s intelligence watchdog has warned.

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. Operation ...

A 'suspicious package' was found at the MI5 headquarters, triggering a lockdown as specialist officers scramble to the scene.. The roads outside the security services headquarters have been shut ...

A new security agency began its job of protecting the UK from state-sponsored and terrorist threats yesterday. The National Protective Security Authority (NPSA) was created as part of a major new ...