SummaryThis paper reports on the last 8 years in the development of a child mental health learning disability service. The growth, challenges and pitfalls faced by the service are charted here. The paper also shows how a service can cope with rising demand without the development of waiting lists and how a specialist service can be embedded within a generic child and adolescent mental health service (CAMHS) as a tier 3 team, thus creating synergies and commonalities of purpose, while avoiding service gaps that inevitably arise from separate services with specific referral criteria. This is a healthy service model that meets the needs of local children with moderate to severe intellectual disabilities and concomitant child mental health problems.