A BBC investigation revealed that the spy agency had lied to three courts about a misogynistic agent who used his MI5 role to ...

MI5 lied "deliberately and repeatedly" as it tried to defend its handling of a neo-Nazi agent who abused women, the BBC has ...

Rosalind Eleazar captures the grief hidden beneath MI5 outcast Louisa Guy’s steely exterior with a subtle and restrained ...

An MI5 agent “deliberately and repeatedly lied” after confirming to a journalist that a violent and misogynistic neo-Nazi was ...

The regulator rewrote a draft report which had contradicted MI5’s false evidence, the BBC can reveal.

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 High Court has been rocked by MI5's 'unreserved' apology, as a judge demands secret documents amid concerns over false ...

IPCO’s investigation, initiated in 2022 after a BBC report revealed disturbing conduct by Agent X, originally found MI5 had ...

Melita Norwood was the KGB's longest-serving female agent in Britain, until being exposed in 1992 by legendary defector ...

A vulnerable teenage girl who is believed to have killed herself after her terror charges were dropped was investigated by MI5 until her death, an inquest has heard ...

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

Sir Brian Leveson is the Investigatory Powers Commissioner, responsible for overseeing MI5's activities The watchdog charged with holding MI5 to account rewrote a report into the handling of a ...