MI5 has rejected claims it had a duty to support a teenage girl with mental health issues who died after being groomed by far ...

The security service MI5 has handled large amounts of personal data in an "undoubtedly unlawful" way, a watchdog has said. The Investigatory Powers Commissioner said information gathered under ...

In 2022, a BBC News investigation established through multiple sources that the man - known as X for legal reasons - was an MI5 agent. He used his MI5 role to coercively control Beth, his ex-partner.

MI5 workers improperly held people's intercepted data for nearly five years, an independent tribunal concluded on Monday, criticising the spy agency for its "serious failings." The Investigatory ...

How very odd it is that we pay so much attention to MI5 and its chief Ken McCallum, warning us last week of all the perils supposedly stalking the land, which just so happen to justify his ...

MI5 showed "institutional defensiveness rather than candour" after the Manchester Arena attack and for years continued to present an "inaccurate picture" of what it had known about the suicide ...

In an update of risks facing the country, Ken McCallum, the head of MI5, Britain’s domestic security service, blamed Russia’s military intelligence agency, the G.R.U., for “dangerous actions ...

Families of the Manchester Arena bomb victims claim MI5 chiefs are trying to “wriggle out of justice”. More than 250 people whose lives were devastated by the atrocity at the Ariana Grande ...

MI5 'lacked candour' when it gave evidence to the Manchester Arena bomb inquiry and other reviews of the atrocity, a lawyer representing families affected by the outrage has told a tribunal.

Russia's intelligence agency has been on a mission to generate "sustained mayhem on British and European streets", the head of MI5 has said. Giving his annual update on security threats faced by ...