MI5 told the court everyone from director general Ken McCallum downwards acknowledged the seriousness of the false evidence MI5 lied "deliberately and repeatedly" as it tried to defend its handling of ...

This case, which began with violence inflicted by an MI5 agent on his girlfriend, has now become a test of whether courts and the public can believe MI5. The man, known only as agent X, used his MI5 ...

Details of MI5 surveillance techniques, not previously acknowledged, were revealed last week in a Northern Ireland court case involving three men accused of serious charges, including conspiracy to ...

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 ...

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 ...