Out-patient services in Britain for psychiatric patients have expanded enormously under the National Health Service. Well over half a million patients are seen at clinics annually. Concomitant with this increase the out-patient department has changed in function. No longer is it principally concerned with providing follow up and support for discharged mental hospital in-patients; instead, because of the greatly increased demand for psychiatric care for less severe disorders and under the influence of the movement for community care it now should play a part not at all subservient to the in-patient department. The clinic, properly run, should be an arena of treatment in its own right.