There are wide regional variations in the quality and provision of diabetes care. The pressure is on health care providers to deliver care of the highest quality. The Quality of Care Diabetes Assessment Tool (QUAD‐CAT) was developed to benchmark the care provided in primary and secondary care, based on the American Diabetes Association (ADA) model.We studied data from a random selection of 25 diabetic patients from 10 primary care centres and 100 diabetic patients from George Eliot Hospital diabetes clinic. Data were collected based on the template of the Alphabet Strategy for managing diabetes, for various parameters, including HbA1c, blood pressure, eye and foot examination, nephropathy assessment, lipid profile and aspirin use. A patient questionnaire was included to assess the subjective quality of service.Points were allocated based on the ADA scoring system. In order for a centre to be accredited, 80 out of 110 points were required. The overall points range was 40–95, with three practices accredited. There was a wide variation in performance in the key measures assessed between the practices.In conclusion, QUAD‐CAT provides an easily conducted and well‐accepted tool to evaluate the quality of clinical care and patient's perception of diabetes services Copyright © 2003 John Wiley & Sons, Ltd.