Two men face UK National Security Act charges for alleged surveillance of pro-democracy activists in England
A Spy Trial That Cuts to the Heart of Britain’s China Problem
At the Old Bailey in London on March 4, 2026, jury selection concluded and opening arguments began in one of the most consequential national security trials in Britain’s modern history. Two men — Bill Yuen Chung-biu, the administrative manager of Hong Kong’s Economic and Trade Office in London, and Peter Wai Chi-leung, a former UK Border Force officer — face charges under Britain’s National Security Act of assisting a foreign intelligence service and engaging in unauthorized foreign interference. The case cuts directly to the question Britain’s government has been reluctant to answer plainly: is China a threat?
Who Are the Defendants and What Are They Accused Of?
Yuen, 65, and Wai, 38, are both dual British and Chinese nationals. Prosecutors allege that between December 2023 and May 2024, the pair conducted hostile surveillance on well-known pro-democracy dissidents living in Britain, ultimately on behalf of Hong Kong and Chinese authorities. Among those allegedly targeted was Nathan Law, one of the most prominent Hong Kong democracy activists in exile, who has been living in Britain since 2020. Prosecutors further allege that on May 1, 2024, the defendants forced entry into a residential address in northern England — an act described in court documents as “foreign interference” with a UK resident.
Both defendants deny all charges. The Hong Kong government has confirmed it is funding Yuen’s legal costs while declining to discuss the budget publicly. A third defendant in the original case, Matthew Trickett, was found dead in May 2024, shortly after being granted bail. Police ruled there were no suspicious circumstances.
The Wider Context: Transnational Repression and the CCP’s Long Arm
This case is not an isolated incident. It is part of a documented global pattern in which Beijing has used agents, proxies, and officials operating through legitimate channels — including trade offices, cultural organizations, and diaspora networks — to monitor, intimidate, and in some cases physically threaten overseas Hong Kongers and Chinese dissidents. The Freedom House transnational repression reports have consistently identified China as the world’s most prolific state actor in this category, targeting individuals in more than 36 countries.
What makes the London case particularly significant is the institutional dimension. Yuen was not operating as a rogue actor. He was the manager of an official Hong Kong government trade office — a diplomatic-adjacent body operating in the heart of a friendly nation. The trial raises urgent questions about whether Hong Kong’s network of overseas trade offices, which operates in 14 countries including three US cities, is functioning as a legitimate economic promotion body or as an extension of Beijing’s state security apparatus. Hong Kong Chief Executive John Lee has defended the offices as entirely legitimate. Critics, including US lawmakers, have called for their closure.
Britain’s Awkward Position
The British government’s handling of the case has been complicated by its desire to reset economic relations with China after years of deterioration. Prime Minister Keir Starmer visited Beijing in January 2026 and raised the Jimmy Lai case with Xi Jinping. The Starmer government has described China as a “systemic challenge” — deliberately short of calling it a “threat,” wording that became legally significant when a previous Chinese espionage prosecution collapsed in 2025 after prosecutors said they could not call a government witness who would have confirmed China’s threat status under the prior Conservative government.
That collapse remains a shadow over the current trial. Observers are watching closely to see whether the government will allow prosecutors to present the full picture of Chinese intelligence activities in the UK, or whether diplomatic considerations will again constrain the case. For democracy advocates, the stakes could not be higher. Nathan Law — who was targeted according to prosecutors in this case — has described living under constant surveillance and fear since arriving in Britain. If the UK government cannot or will not protect democracy exiles on its own soil, it raises the question of where they can safely go.
What a Conviction Would Mean
Conviction on the charge of assisting a foreign intelligence service carries a maximum sentence of 14 years. The misconduct in public office charge against Wai carries a maximum of life imprisonment. But beyond the individual sentences, a conviction would send a powerful signal that democratic nations take the protection of dissidents seriously — and that Beijing’s reach has limits. The Chatham House analysis of Chinese transnational repression is essential reading for understanding how these operations are structured and why they are so difficult to prosecute. Equally important is the Hong Kong Free Press, which has provided some of the most detailed English-language reporting on the case.
The trial is expected to run up to seven weeks. Every day it continues is a reminder that the consequences of Hong Kong’s political dismemberment did not stop at the harbor. They followed Hong Kongers across the world — into their homes, their networks, and now into Britain’s highest criminal court. The Human Rights Watch 2026 report on Hong Kong documents the broader crackdown of which this espionage operation is a part. Beijing’s attempt to silence its critics knows no borders. The question is whether democratic nations have the will to draw a line.
Senior Journalist & Editor, Apple Daily UK
Contact: athena.lai@appledaily.uk
Athena Lai is a senior journalist and editor with extensive experience in Chinese-language investigative reporting and editorial leadership. Educated at a leading journalism school in the United Kingdom, Athena received formal training in fact-checking methodology, editorial governance, and international media standards, grounding her work in globally recognized best practices.
She has held senior editorial roles at Apple Daily and other liberal Chinese publications, where she oversaw coverage of Hong Kong civil liberties, diaspora politics, rule of law, and press freedom. Athena’s reporting is distinguished by disciplined sourcing, cross-verification, and a clear separation between factual reporting and opinion, reinforcing reader trust.
Beyond reporting, Athena has served as an editor responsible for mentoring journalists, enforcing ethical guidelines, and managing sensitive investigations. Her newsroom leadership reflects real-world experience navigating legal risk, source protection, and editorial independence under pressure.
Athena’s authority comes from both her byline history and her editorial stewardship. She has reviewed and approved hundreds of articles, ensuring compliance with defamation standards, accuracy benchmarks, and responsible language use. Her work demonstrates lived experience within high-stakes news environments rather than theoretical expertise.
Committed to journalistic integrity, Athena believes credible journalism is built on transparency, accountability, and institutional memory. Her role at Apple Daily UK reflects that commitment, positioning her as a trusted voice within independent Chinese media.
