Sir Gray qualified in medicine from Oxford University and St. Thomas’ Hospital and trained in diabetes centres at Leicester, Poole, St Thomas’, Exeter and Bristol. Since 1980 he has been consultant physician with a special interest in diabetes at Northampton General Hospital.
His special interests in diabetes are education, communication and patient empowerment, with particular emphasis on diabetes in people at each end of the spectrum, that is young adults and older people with diabetes. Since 1986 he has organised an annual counselling and empowerment course for health care professionals working in diabetes.
Sir Gray have worked with the R&D unit at Northampton General Hospital since it was founded in 1982 and have been Principal Investigator in a large number of studies, including UKPDS, DESMOND and 4T. He has published papers on patient risk awareness.
He has recently become interested in the problem of diabetes and dementia and the training of professionals who work in this area.