This topical, accessibly written book moves beyond established critiques to outline a model of positive youth justice: Children First, Offenders Second. Already in use in Wales, the proposed model promotes child-friendly, diversionary, inclusive, engaging, promotional practice and legitimate partnership between children and adults which can serve as a blueprint for other local authorities and countries. Setting out a progressive, positive and principled model of youth justice, the book will appeal to academics, students, practitioners and policy makers seeking to improve working practices and outcomes and will make an important contribution to the debate on youth justice policy.