This study provides qualitative evidence on the views of service users, their carers and practitioners on the implementation of Part 2 of the Mental Health (Wales) Measure 2010. This part of the Measure requires health boards and local authorities to work in a coordinated way to improve the effectiveness of mental health services. It also requires that care and treatment plans (CTPs) be provided for service users of all ages who have been assessed as requiring care and treatment within secondary mental health services.