Richard Wilkinson has played a formative role in international research and his work has been published in 10 languages. He studied economic history at the London School of Economics before training in epidemiology and is Professor Emeritus at the University of Nottingham Medical School and Honorary Professor at University College London. Kate Pickett is a Senior Lecturer at the University of York and a National Institute for Health Research Career Scientist. She studied physical anthropology at Cambridge, nutritional sciences at Cornell and epidemiology at Berkeley before spending four years as an Assistant Professor at the University of Chicago.