MI5 Contractor Accused of Leaking Secrets to Foreign State Over 'Silenced' Grievances
An MI5 contractor allegedly passed on classified secrets to a foreign state in a desperate attempt to expose what he described as 'grievances' about the Security Service, which he felt were being deliberately 'silenced' by his superiors. This shocking revelation emerged during a court hearing at the Old Bailey, where the extraordinary case is set to be largely conducted in secret to protect national security interests.
Alleged Espionage and Mental Health Struggles
Juan Joseph, a 42-year-old IT contractor from Sutton, South London, is accused of travelling to an embassy in Latvia and sending emails that contained highly sensitive information relating to security and intelligence matters. Prosecutors assert that the unauthorised disclosure of this material was likely to cause significant damage to UK national security. Joseph, who worked for MI5 for over a decade from 2009 to 2020, held a 'developed vetting' security clearance, granting him access to the highest classification of information during his tenure.
According to the prosecution, Joseph's actions were motivated by a complaint about his treatment by MI5 bosses after his contract was terminated in October 2020 due to his deteriorating mental health. Following his dismissal, the disgruntled contractor raised multiple grievances against the Security Service and even attempted to bring a private prosecution at Westminster Magistrates Court in August 2024. When this application was refused, Joseph escalated the matter by applying for a judicial review at the High Court.
Secret Communications and Embassy Visit
In late 2024 and early 2025, while reportedly mentally unwell, Joseph sent a series of emails addressed to or copied to bodies representing one or more foreign countries. These communications contained information that the prosecution claims should never have been disclosed in such a manner. Concerned court officials alerted the police after receiving emails in November 2024 that copied in a foreign state and contained damaging sensitive intelligence.
Days later, on December 8, Joseph allegedly flew to Riga, Latvia, where he travelled to an embassy and requested meetings with representatives of a foreign state via email. The identity of the country involved remains classified, with many details of the case kept secret to safeguard national security. Upon his return to the UK, Joseph was stopped at Gatwick airport on December 15, where police questioned him and seized five mobile phones, a tablet device, and a laptop. During this encounter, he refused to provide the PINs for his devices, claiming he was still an MI5 officer.
Arrest and Psychiatric Considerations
Further investigations revealed that Joseph sent an email to the Independent Office for Police Conduct containing information likely to be damaging under the Official Secrets Act. He was subsequently arrested on January 30, 2025, at an IBIS hotel in Sutton, where he had reserved a room for two nights. At the time of his arrest, Joseph was described as 'agitated', clutching two phones and carrying a lock knife in his pocket. He insisted to police that he remained an MI5 officer and was entitled to carry the weapon.
Later searches of his home uncovered his signed Official Secrets Act declaration stored in a plastic tub, along with a fake card identifying him as an MI5 officer. In police interviews, Joseph maintained that he was still employed by the Security Service and denied disclosing any secret information, stating he did not intend to copy in the unnamed foreign country.
Insanity Defence and Ongoing Trial
Prosecutor Jocelyn Ledward, KC, informed the court that jurors will be asked to consider whether Joseph was 'not guilty by reason of insanity'. She noted that while there is no dispute about the defendant sending the emails or possessing the knife, the critical issues revolve around his state of mind at the time of these actions. The prosecution acknowledged that, under normal circumstances, such conduct would clearly be prejudicial to UK interests, but psychiatric evidence may provide an alternative explanation.
Ms Ledward suggested that Joseph might have been labouring under a terrible delusion caused by paranoid schizophrenia, believing he had been wronged and silenced, which compelled him to escalate his complaint to a foreign power. Joseph denies two charges of making damaging disclosures relating to security, preparatory conduct under the National Security Act, opening or disclosing protected information, and possessing an offensive weapon. The trial continues at the Old Bailey, with proceedings expected to remain largely confidential.
