Abstract
This article presents three case studies of patients that a child and adolescent mental health service (CAMHS) have supported and its purpose is to encourage discussion of two key learning points. The first of these is the utility of developmental trauma as an approach for children with mental health presentations. The second centres on the importance of multi-agency working when working with young people, principally those within the UK's local authority care system ('looked after children'), who have had traumatic experiences in order to enhance positive outcomes. We also want to encourage consideration of the implications of developmental trauma for current core CAMHS therapeutic models in an attempt to reach beyond the often held narrative that the trauma formulation implies there is 'just trauma, no mental illness'.