Tony Ryan is Director of Tony Ryan Associates, an Associate Consultant with the National Institute for Mental Health in England (North West) and an Associate Consultant for the Health and Social Care Advisory Service and has worked in service development since June 2000. He has experience as a mental health nurse in the NHS and edited Managing Crisis and Risk in Mental Health Nursing (1999). Tony has published on a wide range of topics including service development, mental health policy, nursing practice and research methodology. Jacki Pritchard is a qualified social worker who has worked as a practitioner and manager in both fieldwork and hospital settings. She is currently working as a trainer, consultant and researcher focusing on abuse, risk and violence.