This is the first text to examine the principal elements of service user involvement and participation across both adult and children's services. A valuable learning resource, it draws together information from research, service users, carers and practitioners across both groups. In addition, it gives an overview of the specific knowledge, attitude and skills that social workers need for training at qualifying level and integrates theory with evidence to inform everyday social work practice. Furthermore, case studies and activities encourage reflection and the application of this knowledge to practice situations.