LONDON – In a landmark espionage case that has escalated diplomatic tensions between London and Beijing, a UK jury has found two dual Chinese-British nationals guilty of conducting coordinated spying operations on behalf of Chinese authorities targeting Hong Kong pro-democracy dissidents based in Britain. The convictions mark one of the highest-profile transnational repression cases prosecuted under the UK’s landmark National Security Act.
The defendants, 40-year-old Peter Wai and 65-year-old Bill Yuen, carried out what prosecutors described as “shadow policing” across the UK, targeting exiled activists and political figures who relocated to Britain after Beijing imposed a sweeping national security law on Hong Kong in 2020. Wai, a serving UK Border Force officer and a special constable with the City of London Police who also operated a private security firm, abused his official access to law enforcement databases to gather intelligence on dissidents. Yuen, a former Hong Kong Police superintendent who worked as an office manager at the Hong Kong Economic and Trade Office (HKETO) – Hong Kong’s official representative body in London – exceeded his official remit to coordinate the surveillance network, prosecutors confirmed.
Following a weeks-long trial at London’s Central Criminal Court, the jury returned guilty verdicts on Thursday on charges of violating the National Security Act by providing assistance to a foreign intelligence service. Wai received an additional conviction for misconduct in public office over his misuse of police computer systems to pull information on targets while off duty. Prosecutors documented that Wai received payment for his work from an HKETO bank account, and the pair exchanged phone messages referring to Hong Kong dissidents as “cockroaches.” Their targets included prominent exiled Hong Kong pro-democracy figure Nathan Law, as well as senior UK politicians: Yuen explicitly instructed Wai to prioritize monitoring members of UK Parliament and government employees, providing Wai with the name of Conservative lawmaker Iain Duncan Smith, co-chair of the Inter-Parliamentary Alliance on China, in 2023.
The conspiracy was uncovered by British counterterrorism police in May 2024, when officers monitoring the network disrupted an attempted break-in at the West Yorkshire home of Monica Kwong, a Hong Kong national living in northern England. Kwong had been accused of 16 million pounds ($21.8 million) fraud by her former employer, Beijing-based Australian businesswoman Tina Zou, who was present at the scene during the attempted break-in. Kwong has maintained the fraud accusation is a fabricated setup. Nine people were arrested during the disruption, including Zou, Wai, and two retired Hong Kong police officers. Yuen, who was in regular communication with the group, was taken into custody shortly after in London.
A third defendant, Matthew Trickett, a UK immigration enforcement officer also arrested at Kwong’s home, died by suicide in custody before the conclusion of the trial. Zou was never charged in connection with the espionage conspiracy, and the jury was unable to reach guilty verdicts on charges linked to the break-in at Kwong’s residence. Prosecutors further confirmed that Hong Kong authorities had offered bounties of up to nearly 100,000 pounds ($136,000) for information leading to the capture of exiled pro-democracy supporters, a context that frames the surveillance operations carried out by Wai and Yuen.
Shortly after the jury delivered its guilty verdicts, the UK Foreign Office summoned Chinese Ambassador Zheng Zeguang to formally protest the actions. Senior UK officials emphasized that the convictions send an unambiguous message to foreign governments seeking to conduct unlawful operations on British territory. “These convictions send a clear message that transnational repression, foreign interference, unauthorized surveillance, and attempts to operate outside the law will not be tolerated on British soil,” said Bethan David, head of counterterrorism at the Crown Prosecution Service. “This conduct was deliberate, coordinated and carried out with full knowledge of who it would benefit.”
Security Minister Dan Jarvis echoed the condemnation in a formal statement, noting: “The activities carried out by these men, on behalf of China, are an infringement of our sovereignty and will never be tolerated. We will continue to hold China to account and challenge them directly for actions which put the safety of people in our country at risk.”
Hong Kong’s government issued a response distancing itself from the case, saying it was not involved in the activities and strongly rejected “unfounded allegations” against the administration or its London trade office.









