Leah Quinlivan1,2,3, Donna L Littlewood1,2,3, Roger T Webb1,2,3, Nav Kapur1,2,3,4. 1. NIHR Greater Manchester Patient Safety Translational Research Centre, University of Manchester, UK. 2. Centre for Mental Health and Safety, University of Manchester. 3. Manchester Academic Health Science Centre (MAHSC), University of Manchester, UK. 4. Greater Manchester Mental Health NHS Foundation Trust, Manchester, UK.