This highly topical report provides much needed evidence to inform the re-configuration of services for children and young people. Focusing on the Connexions strategy and service in England, it explores the effectiveness of inter-agency working in this area. The report is based on two years research in three contrasting Connexions Partnerships and around 300 hours of interviews with key stakeholders, young people's Personal Advisors and young people themselves. It examines the inter-agency strategies developed by the partnerships but, most importantly, what impact they have had on the interventions made with young people facing acute and complex needs. It will be of particular interest to Connexions professionals and managers, others involved in partnership working, those involved in the development and implementation of Children and Young People's Strategic Partnerships and Children's Trusts, as well as youth researchers and policy makers.