Originally from Switzerland, Stephen Senn was Professor of Pharmaceutical and Health Statistics at University College London 1995-2003, Professor of Statistics at the University of Glasgow, from 2003- 2011 and head of the Competence Center for Methodology and Statistics at the Luxembourg Institute of Health in Luxembourg 2011-2018. He has also worked in the Swiss pharmaceutical industry, as a lecturer and senior lecture in Dundee and for the National Health Service in England. He is an honorary professor at the University of Sheffield. He is the author of the monographs Cross-over Trials in Clinical Research (1993, 2002), Statistical Issues in Drug Development (1997, 2007), Dicing with Death (2003) and over 300 scientific publications. In 2001 Stephen Senn was the first recipient of the George C Challis award for Biostatistics of the University of Florida, in 2008 he gave the Bradford Hill lecture of the London School of Hygiene and Tropical Medicine and in 2009 was awarded the Bradford Hill Medal of the Royal Statistical Society. In 2017 he gave the Fisher Memorial Lecture. He is a Fellow of the Royal Society of Edinburgh and an honorary life member of Statisticians in the Pharmaceutical Industry (PSI) and the International Society for Clinical Biostatistics.