MI5 Admits Giving False Evidence in Court Over Violent Neo-Nazi Informant Case

The UK Security Service, MI5, has formally admitted in the High Court in London that it presented evidence based on lies to three separate courts while defending a violent neo-Nazi informant. The admission marks the first time the agency has accepted without reservation that senior intelligence officers engaged in repeated dishonesty to maintain state secrecy over the operative's status.

A panel of three senior judges—led by England and Wales' most senior judge, Lady Chief Justice Baroness Sue Carr, alongside King’s Bench Division President Dame Victoria Sharp and Mr Justice Chamberlain—is now weighing whether to launch contempt of court proceedings. If initiated against MI5 or its individual officers, such an action would be unprecedented in modern British legal history.

The case centers on an MI5 informant known in court proceedings as "Agent X," a foreign neo-Nazi who engaged in severe domestic abuse against his partner, referred to as "Beth." According to court records, Agent X subjected Beth to coercive control and attacked her with a machete while using his status as an intelligence asset as an instrument of intimidation. Despite an active police investigation, MI5 assisted Agent X in traveling abroad to continue intelligence operations.

Legal battles over the matter began when the UK government launched legal proceedings in 2022 to block a BBC investigation into Agent X. While that attempt failed to halt publication, the court granted the informant legal anonymity. Beth subsequently initiated legal challenges against MI5 in the Investigatory Powers Tribunal and later sought a judicial review in the High Court in 2024.

Throughout these proceedings, MI5 maintained that it strictly adhered to its standard "neither confirm nor deny" (NCND) secrecy policy regarding the operative. In a sworn statement submitted to the courts by a senior deputy director identified as Witness A, the agency insisted it had never confirmed Agent X's informant status to anyone, including journalists. Judges accepted these representations, effectively barring Beth from receiving crucial evidence and officially confirming the agent's identity, which placed her legal claims at a severe disadvantage.

However, those assertions were false. MI5 personnel had previously disclosed Agent X's intelligence status during phone calls with a BBC investigative journalist in 2020 while attempting to dissuade the broadcaster from pursuing the story. In addition, an intelligence officer referred to as Officer 2 had attempted to shield the informant by falsely claiming he was neither an abusive misogynist nor a genuine extremist.

When the discrepancies were initially uncovered and reported by the BBC in February 2025, MI5 vigorously denied the allegations. Two initial internal inquiries conducted on behalf of the agency concluded that the false testimony was the result of innocent memory lapses and honest procedural mistakes. In July 2025, a High Court panel rejected those findings, ruling that the internal investigations suffered from serious procedural deficiencies and could not be relied upon.

In September 2025, the Prime Minister ordered an independent investigation headed by Sir John Goldring, the former deputy investigatory powers commissioner. Sir John's report, published in July, delivered a damning assessment, concluding that Officer 2 had lied repeatedly and that another senior intelligence official, Officer 3, had misled colleagues and lied about what he was told. The inquiry identified "serious and systemic failures in MI5's conduct" throughout the litigation.

Appearing before the High Court on Friday, Tim Otty KC, representing MI5, confirmed that the security service accepted Sir John’s findings "without reservation." Otty acknowledged the profound gravity of the findings and stated that MI5 is undergoing a major internal reform program under the direction of its Director General, Sir Ken McCallum.

Otty argued against the initiation of formal contempt of court proceedings, asserting they would not serve the public interest given Sir John's comprehensive investigation, MI5’s public apologies, and the disciplinary measures underway. The court heard that Officer 2 has resigned from the intelligence service, while Officer 3 has been suspended and faces formal disciplinary proceedings that could result in dismissal.

Counsel representing the individual officers also urged the court not to pursue contempt actions. Matthew Butt KC, appearing for Officer 2, stated that the former officer acknowledged his conduct fell below expected standards and expressed regret, but denied acting dishonestly or deliberately interfering with the administration of justice. Aaron Watkins, representing Officer 3, apologized for actions that contributed to misleading the court but maintained that the conduct did not stem from deliberate dishonesty.

In contrast, lawyers representing Beth and the BBC argued that the gravity of the institutional deceit demands formal contempt proceedings. Charlotte Kilroy KC, representing Beth, submitted that the deception was prolonged, deliberate, and extended beyond individual misconduct, urging proceedings against Officer 2, Officer 3, and Sir Ken McCallum in his corporate capacity.

Jude Bunting KC, representing the BBC, told the court that presenting false evidence represented a direct affront to the administration of justice, emphasizing that the truth emerged only after incontrovertible evidence, including audio recordings, forced MI5 to abandon its denials.

Concluding the hearing, Lady Chief Justice Baroness Sue Carr described the session as a serious day addressing grave institutional matters. The three-judge panel has reserved its decision and will deliver a formal judgment on whether to initiate contempt proceedings at a later date.