Chi Leung Wai, 38, a UK Border Force officer, and Chung Biu Yuen, 63, a retired police officer, are accused of spying on dissidents in the UK on behalf of Hong Kong.

They were spotted leaving the Central Criminal Court in London on May 24.

Chi Leung Wai, 38, a UK Border Force Officer, ex-City of London Police Special Constable and suspect in a Hong Kong espionage case, leaves the City of London's Old Bailey Central Criminal Court on the morning of Friday 24 May 2024. Chi Leung Wai was in court for a mention alongside co-defendant Chung Biu Yuen, 63, a retired Hong Kong police officer now employed as an office manager at the Hong Kong Economic and Trade Office in London. Both men are accused of allegedly assisting the Hong Kong intelligence services to spy on Hong Kong pro-democracy dissidents living in the United Kingdom.

A third defendant in the case, former Royal Marine Matthew Trickett, was found dead in a public park in Maidenhead on Sunday 19 May 2024, Trickett's death is being treated as unexplained and a post-mortem examination will be carried out in due course, according to a statement from Thames Valley Police.

Chi Leung Wai, 38, a UK Border Force Officer, ex-City of London Police Special Constable and suspect in a Hong Kong espionage case, leaves the City of London's Old Bailey Central Criminal Court on the morning of Friday 24 May 2024.