Lewis is a Regulatory & Nutrition Affairs Advisor in the Global Regulatory Affairs team at Campden BRI, advising on a range of topics including UK/EU/USA legislation and global nutrition policy, with experience writing on these topics for peer-reviewed journal articles, government research projects, book chapters, client-facing technical documents, white papers, and guidance documents. He regularly presents on Campden BRI training courses and at a range of industry and academic events on the topics of nutrient profiling, High Fat Sugar Salt (HFSS) legislation, ultra-processed foods, and front-of-pack nutrition labelling.