Suzanne Mason, professor of emergency medicine, Carl Marincowitz, clinical senior lecturer in emergency medicine1, Elspeth Guthrie, professor of psychological medicine2 1Sheffield Centre for Health and Related Research, University of Sheffield, Sheffield, UK 2School of Medicine, University of Leeds, Leeds, UK Correspondence to: S Mason s.mason{at}sheffield.ac.uk New centres must be co-located with emergency departments The proposed rollout of 85 mental health emergency departments across...