Designation of specialised services such as services for Grown-Ups with Congenital Heart Disease is a formal process of checking that service providers meet certain standards and that services are able to meet demand and to deliver the best possible outcomes for patients and are good value for money. The service specification standards included in the Grown-Ups with Congenital Heart Disease designation document have been drawn up to assist this process by providing a common set of criteria against which services can be assessed. It is the responsibility of the 10 Specialised Commissioning Groups in England working on behalf of their constituent primary care trusts to decide on the relative priority of work on the specialised services within their designation programmes.