This paper examines the outcomes of 631 patients who were assessed at the Oxford Adult Eating Disorders Service between May 1994 and December 2002. After treatment, significant improvements were reported across the total sample for body mass index (BMI), the Beck Depression Inventory, the Beck Anxiety Inventory and the Robson Self Concept Questionnaire. Significant improvements were also reported for all measures of the Eating Disorder Questionnaire (EDE) and for all measures of the Eating Disorder Inventory (EDI) except for perfectionism. Patients with anorexia nervosa showed improvements in both BMI and associated psychopathology. Patients with bulimia nervosa showed a reduction in the number of self-induced vomiting occasions and the number of objective binges and improvements in the associated psychopathology. Further research is required to identify factors associated with improvements in symptomatology. Copyright © 2005 John Wiley & Sons, Ltd and Eating Disorders Association.