Andrew Whittaker is an Associate Professor of Social Work at London South Bank University, UK, where he is the Head of the Risk, Resilience and Expert Decision Making research group. His research focuses on child protection and the risks faced by young people in cities.Brian Taylor is a Professor of Social Work at Ulster University, Coleraine, UK, where he leads the Decision, Assessment, Risk and Evidence Studies research cluster. He is the author of Decision Making, Assessment and Risk in Social Work (2013, 3rd ed) and Understanding and Using Research in Social Work (with Anne McGlade and Campbell Killick, 2015).