There has been much discussion on the most suitable services for mentally handicapped people with special needs such as additional mental illness or marked behavioural disorders. A number of policy documents have advocated the use of generic services as a matter of course, such as the All Wales Strategy (1983), while others have acknowledged a possible need for specialist input when such services are used e.g. Needs and Responses (Department of Health, 1989). In 1986 the Royal College of Psychiatrists stated that the psychiatric needs of this group required a specialised service and suggested that ideally this would be integrated with other psychiatric specialities as part of a comprehensive service.