Christopher Berry, of Witney, and Christopher Cash, of Whitechapel, were arrested in March 2021 in connection with the investigation. They are accused of breaching the Official Secrets Act and passing on information prejudicial to the safety or interests of the State. One of the men, Cash, was a Parliamentary pass holder at the time of the alleged offenses. Commons Speaker Sir Lindsay Hoyle has reminded MPs that they should not refer to the matter in the chamber due to the sub judice rule.