JOHN TURNBULL is Director of Nursing at Oxfordshire Learning Disability Health Trust. He has extensive experience as a practitioner, researcher and manager in the field of Learning Disability and has published widely on a range of topics. His previous post was that of Nursing Officer at the Department of Health.BRODIE PATERSON is a Lecturer in the Department of Nursing and Midwifery at the University of Stirling. An experienced teacher and practitioner, he has been involved for many years in research, publication and practice development in the field of managing aggression and violence.