Sir Patrick John Thompson Vallance (born 17 March 1960) is a British physician, scientist, and clinical pharmacologist who has worked in both academia and industry. He served as the Chief Scientific Adviser to the Government of the United Kingdom from 2018 to 2023. On stepping down, he became chair of the Natural History Museum in London. From 1986 to 1995, Vallance taught at St George's Hospital Medical School, where his research concentrated on vascular biology and endothelial cell physiology. In 1995, he was appointed Professor at UCL Medical School, and in 2002 he became head of UCL's Department of Medicine. From 2012 to 2018, he was president of Research and Development at global pharmaceutical company GlaxoSmithKline (GSK). In March 2020, as the government's Chief Scientific Adviser, Vallance appeared alongside prime minister Boris Johnson and the Chief Medical Officer for England, Chris Whitty, in televised briefings on the COVID-19 pandemic. For a time, he advocated a herd immunity approach. He was appointed Knight Commander of the Order of the Bath (KCB) in the 2022 New Year Honours for services to public health. Source: Wikipedia (en)