He has over twenty years' experience in mental health care. David has served as a panel member for a number of External Inquiries into homicides and suicides, has researched and published extensively on suicide, and is the lead author of the NIMHE Suicide Prevention Toolkit. 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.