A former director at the tobacco giant Philip Morris International (PMI) was handed a role on an influential expert committee advising the UK government on cancer risks. Ruth Dempsey, the ex-director of scientific and regulatory affairs, spent 28 years at PMI before being appointed to the UK Committee on Carcinogenicity of Chemicals in Food, Consumer Products and the Environment (CoC). The committee's role is to provide ministers with independent advice. Yet since taking up the position in February 2020, Dempsey has continued to be paid by PMI for work including authoring a sponsored paper about regulatory strategies for heated tobacco products. She also owns shares in the tobacco giant ... and receives a PMI pension. But her appointment, unreported until now, raises questions about the potential for undue influence and possible access to inside information on policy and regulatory matters that may be valuable to the tobacco industry. PMI has a long history of lobbying and influence campaigns, including pushing against planned crackdowns on vaping. It has also invested heavily in promoting heated tobacco as an alternative to smoking and expects to ship around 140bn heated tobacco units in 2024, a 134% increase on its 59.7bn sales in 2019. Sophie Braznell, who monitors heated tobacco products as part of the University of Bath's Tobacco Control Research Group, said Dempsey's position on the committee risked undermining its work. "In permitting a former senior tobacco employee and consultant for the world's largest tobacco company to join this advisory committee, we jeopardise its objectivity and integrity."