John is the Director of the Sheffield Alcohol Research Group and of the Wellcome Doctoral Training Centre in Public Health Economics and Decision Science. He completed his training in the University of York’s Social Policy department with a thesis focused on inequalities, risks and opportunities of young people’s internet use. He also completed a one-year post-doc focusing on child poverty and well-being. Since 2010, he has worked at the School of Health and Related Research (ScHARR) at the University of Sheffield, where he has contributed key epidemiological evidence and policy analyses to national and international alcohol policy debates. In particular, he has worked on minimum unit pricing (MUP), other pricing policies and low-risk drinking guidelines. He currently leads an evaluation of the impact of MUP on harmful drinkers in Scotland, research on drinking occasions, practices and culture, and a Wellcome Investigator Award examining the sharp decline in youth drinking