Speaker of the House of Commons, Sir Lindsay Hoyle, wrote to parliamentarians on Tuesday to alert them to the ‘Espionage Alert’ issued by MI5.

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. The disgraced ...

MPs, peers and parliamentary staff have been warned by MI5 over spying threats from Chinese security services.

Director General of MI5, the UK's Security Service, Ken McCallum, delivers the annual Director General's Speech at Thames House, the headquarters of the UK's Security Service in London on Thursday Oct ...

The prime minister has ordered a new investigation into how MI5 gave false evidence to three courts about conversations with the BBC. Sir Keir Starmer's direction follows requests from the High Court ...

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 for ...