The Department for Science, Innovation and Technology (DSIT) Minister of State, Ian Murray MP, has informed the House of Commons that UK Biobank had reported the online advertisement for sale of datasets purporting to contain participant data on a Chinese e-commerce platform. One dataset appearing to cover all 500,000 volunteers, although the data did not include names, addresses or contact details and no purchases are believed to have occurred. In response, the government worked with UK Biobank, the vendor and Chinese authorities to remove the listings, revoked access from the research institutions identified as the source, and required a pause on further data access until stronger technical safeguards are implemented. UK Biobank has referred itself to the Information Commissioner’s Office and will investigate the cause, notify participants, and conduct a rapid review of its data security arrangements. The Minister emphasised the importance of the Biobank’s research role, described the incident as a misuse of data and a breach of trust, and confirmed that further government guidance on research data controls and cybersecurity will be issued.