Most local authorities offer a CAMHS service, which provides an inclusive approach to supporting the mental and psychological health of children and young people. The aim is for these children to be assessed and professionally treated and supported, along with their family, across a wide spectrum of services, such as health, education and social care. Such support is generally NHS-provided.

The approach CAMHS uses is organised around a four-tier framework, which ascends according to the extent of the child's difficulties. For example, a child on tier one will not need to be referred to mental health specialists, but instead get support from people such as GPs, teachers or voluntary agencies. A child on tier four, however, may require admission into hospital or a specialist day unit. Some children may need support in more than one tier, or even all four, at the same time.