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

MI5 accepts that the status of a neo-Nazi agent should no longer be protected, after previously refusing to confirm if they were an informant A BBC investigation found MI5 had given false evidence ...

A victim of abuse at Kincora Boys' Home has received an undisclosed settlement after claims a paedophile housemaster was ...

An MI5 agent “deliberately and repeatedly lied” after confirming to a journalist that a violent and misogynistic neo-Nazi was operating as an undercover source, a court has heard.

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

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

MI5 is in serious trouble. Britain’s domestic secret intelligence agency has become the story. A neo-Nazi thug who attacked his girlfriend with a machete happened to be a paid undercover agent ...

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.

MI5 has issued an "unreserved apology" after a court was misled in a bid to stop a suspected Security Service informant from being identified. The High Court was “misled” by false information ...

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. It is at odds with the ...

The new head of Britain's MI6 will be a woman for the first time in the more than 100-year history of the country's secret ...

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