This publication reports on a study that investigated recent developments in the UK and Republic of Ireland in services for young people who have demonstrated sexually abusive behaviour. The authors carried out: a literature review; a survey of key experts; a study of structural and management issues in this area; a mapping survey; analysis of policy documents; a qualitative study of service user perspectives. Findings from each activity are discussed separately before being drawn together in the final chapter. The report concludes with recommendations for further action in relation to various areas of policy, practice and research.