The UK government is under intense scrutiny following the collapse of a high-profile espionage case involving two individuals accused of spying for China. Christopher Berry, an academic, and Christopher Cash, a former parliamentary researcher, were charged under the Official Secrets Act in April 2024. The case was dropped by the Crown Prosecution Service (CPS) due to insufficient evidence that China posed a national security threat at the time of the alleged offenses. Deputy National Security Adviser Matthew Collins, in his witness statements, asserted that China was engaged in ‘large-scale espionage’ against the UK, describing it as the ‘biggest state-based threat to the country’s economic security.’ However, the CPS determined that the evidence fell short of the threshold required for prosecution. The controversy has sparked accusations from the Conservative Party that the Labour government allowed the case to collapse to protect economic ties with China. The government denies these claims, attributing the case’s failure to the previous Conservative administration. MPs have questioned the CPS’s decision, with some suggesting there was enough evidence to proceed to trial. The case has reignited debates about the UK’s relationship with China and the adequacy of its national security measures.