Andrew Green has over 30 years of practical experience in investigating breast cancer at the molecular level. He is an Associate Professor at the Faculty of Medicine & Health Sciences, University of Nottingham. He was awarded a PhD from the University of Hull, in 1997. Subsequently, he spent six years at the MRC Toxicology Unit, Leicester, primarily investigating the carcinogenic mechanisms of selective estrogen receptor modulators using in vivo models. In 2003, he joined the Breast Cancer Pathology Research Group in the School of Medicine at the University of Nottingham led by Prof Ian Ellis. His main focus is the exploration of the hypothesis that a novel classification of breast cancer based on phenotypic and molecular genetic characteristics will provide a more robust system for classification and therapeutic decision-making.