British National Security Advisor Jonathan Powell meeting with Chinese Foreign Minister Wang Yi in July. Yonhap News. 

Allegations have been raised that the British government made it difficult to prosecute Chinese espionage within UK political circles in an effort to prevent the deterioration of relations with China.

According to reports from major dailies such as The Times and the Financial Times (FT) on the 5th (local time), the UK Crown Prosecution Service (CPS) decided last month not to prosecute Chris Cash, a former parliamentary researcher accused of collecting and passing on information that could be beneficial to an enemy.

Although the trial was scheduled to begin in a month, the prosecution stated that they could not proceed with the case due to insufficient evidence.

Immediately following the announcement of the decision not to prosecute, many politicians who have long suspected Chinese espionage within the British democratic system—as well as the Prime Minister’s Office—expressed their dissatisfaction.

A spokesperson for the Prime Minister’s Office told The Times that the decision was "very disappointing."

However, major British media outlets reported on the 5th that the reason the investigation collapsed may actually have stemmed from the "highest levels" of government.

According to the reports, National Security Advisor Jonathan Powell discussed the case early last month with officials including Permanent Under-Secretary at the Foreign Office, Oliver Robbins. Powell reportedly stated that the government's key witness would provide testimony in accordance with the recently published National Security Strategy report.

This report defines China as a "challenge" rather than an "enemy." This means that, under these guidelines, Deputy National Security Advisor Matthew Collins would be unable to testify in court that China is an enemy state or a hostile power acting against national interests, thereby preventing the prosecution from arguing that the defendant violated the Official Secrets Act by acting on behalf of an enemy.

The Home Office, which had hoped to push forward with the case, was also present at the meeting and reportedly engaged in a heated argument with the Prime Minister’s staff and the Foreign Office.

Senior officials told the FT that the dispute appeared to arise because the Prime Minister’s aides and the Foreign Office did not want to provoke China, as the UK is currently seeking to improve relations with its major trading partner.

Conservative MP Alicia Kearns, who was scheduled to provide testimony, emphasized that Prime Minister Keir Starmer must personally answer questions and that the government should disclose the decision-making process in the public interest.

A Cabinet Office spokesperson told the newspaper that "there was no substantive change in the evidence provided by the government." The spokesperson also refuted claims that Advisor Powell made any decisions regarding the substance of the witness’s testimony, labeling it "completely inaccurate" and flatly denying that the Prime Minister’s Office exerted pressure to bury the case.

The government has consistently maintained that the decision not to prosecute was made independently by the prosecution.

Yonhap News