A man has been charged under the Official Secrets Act with allegedly disclosing defence information unlawfully.
Simon Finch, 49, of Swansea, south Wales, is alleged to have unlawfully disclosed highly sensitive information relating to the UK without lawful authority to do so.
The court heard during the course of the investigation that police seized electronic devices from the defendant's home address.
He is accused of failing to provide the access codes for three of the devices, despite an order from the judge.
Mr Finch is charged with one offence under the Official Secrets Act, and another under the Regulation of Investigatory Powers Act.
He has been bailed and will appear at the Old Bailey on 6 November.