Aim. To explore the practices of nurse prescribers who care for people with diabetes. Background. The use of medicines is an important component of the care of patients with diabetes. However, education and support is equally important to the successful management of this group. These are areas of care in which nurses have traditionally been involved. Evidence suggests that combining nursing skills with prescribing may result in shared decision-making and increased medicines concordance. Design and methods. A collective case study of nine practice settings across England in which nurses prescribed medicines for people with diabetes. Data comprised of semi structured interviews (n = 31), patient questionnaires (n = 131) and video-ta...