Professor David Butler is Co-director of the Centre for Water Systems at the University of Exeter, UK. Dr Christos Makropoulos is an assistant professor at the National Technical University of Athens and the Chief Information Officer of KWR Watercycle Research Institute in the Netherlands. Dr Chris Digman is a chartered civil engineer working for MWH in UK. He co-developed the first urban drainage research framework for the UK’s Environment Agency. Professor John Davies is Emeritus Professor of Civil Engineering at Coventry University, UK.