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

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

June 03, 2025 at 5:13pm BST. MI5 has offered an “unreserved” apology to the High Court saying there had been “failings and errors” in legal proceedings related to an alleged source accused ...

MI5 has offered an “unreserved” apology to the High Court saying there had been “failings and errors” in legal proceedings related to an alleged source accused of abusing two women.. In ...

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 ...

MI5 lied "deliberately and repeatedly" as it tried to defend its handling of a neo-Nazi agent who abused women, the BBC has told a panel of High Court judges. The corporation argued the threshold ...

Undisclosed MI5 intelligence was not deliberately withheld from a £40 million (€46.6 million) investigation into the activities of the British army’s top spy in Northern Ireland during the ...

April 17, 2025 at 11:23am BST. An MI5 review into the failure of the British security agency to disclose information to the team investigating agent Stakeknife has been branded a “whitewash”.

KEW: For the first time in MI5's 115-year history, the famous UK spy agency is revealing some of its secrets in a London show featuring confessions from double agents and James Bond-like gadgets.

A briefcase abandoned by infamous Cambridge spy Guy Burgess as he fled to Moscow in 1951 is among the never-before-seen MI5 artefacts going on display at The National Archives in Kew, south-west ...