Andrew is a professor of Health Economics and the London School of Hygiene & Tropical Medicine. Previously, he held the William R Lindsay Chair in Health Economics at the University of Glasgow. Following a sabbatical at Memorial Sloan Kettering Cancer Center, New York in 2016/17 he remains a visiting investigator, collaborating with Dr. Peter Bach on value frameworks for oncology medications. Andrew has expertise in all areas of health economic evaluation -- he has published over 200 articles in the peer-reviewed literature. He has particularly focused on statistical methods for cost-effectiveness analysis. This includes statistical methods for estimation of parameters for cost-effectiveness models as well as statistical analysis of cost-effectiveness alongside clinical trials. He also has a more general interest in epidemiological methods, in particular the use of prognostic scoring methods for predicting health outcomes and the relationship with heterogeneity in cost-effectiveness. Andrew took a leadership role as co-chair of the Joint Society for Medical Decision Making (SMDM) and ISPOR Task Force on Modelling Methods. The Task Force, which was responsible for producing a set of seven papers covering all aspects of modeling methods applied to medical decision making and health technology assessment. He is also the author of two successful textbooks, one published by OUP entitled Decision Modelling for Health Economic Evaluation, and another published by Wiley entitled Statistical Methods for Cost-Effectiveness Analysis. In addition to his academic activities, Andrew is also director & principal of Avalon Health Economics, a small consultancy company based in New Jersey, USA, which focuses on providing support to companies bringing products to market in both US and ex-US.