Andrew G. Leach obtained his Ph.D. from the University of Cambridge and undertook postdoctoral research at UCLA, supported by the Fulbright scheme. He returned to the UK to join AstraZeneca as a computational chemist and worked in oncology, diabetes, and obesity. In 2012, he became one of the cofounders of MedChemica Limited and also joined Liverpool John Moores University as a lecturer in the School of Pharmacy and Biomolecular Sciences. His interests include all aspects of computation to support drug discovery and medicinal chemistry as well as the use of quantum mechanics to unravel interesting reaction mechanisms. He has published more the 70 articles, 5 book chapters and is a named inventor on 12 patents.