r services The structure of LAs is dependent on a number of factors, including their size, the needs of their geographical areas and allocated funding. Each LA has an overall director responsible for overseeing CLA practice and organising the local delivery of practice. Service managers and team leaders have responsibility for teams of practitioners each with their own caseloads. There are a range of practitioners in CLA teams. Some of these include: senior practitioners, social workers, mental health coordinators, newly qualified social workers, personal assistants, occupational therapists, family support workers, play referral coordinators and business support workers. Practice models Each LA incorporates various theories and models of practice into their daily practice and underpinning ethos of the service. Some LAs do not follow a prescribed practice model, instead they have a blended or hybrid approach between different types of practice; for example, between trauma informed practice, restorative practice and relationship-based practice. The blended approaches have a coherent theoretical grounding but also rely on an understanding of other factors. For example, family narratives; understanding how past experiences affect current attitude and behaviour and how work is carried out. Relationship-based practice has six underpinning principles: strength-based approaches, trauma-informed practice, solution-focused brief intervention, systematic approaches, motivational interviewing and safe uncertainty (Mason, 1993). The aim of this practice model is to facilitate an environment for workers to be skilled and confident in their ability to confront, challenge and resolve when working with children, young people, and families. For another LA the core premise of practice is 