Insulin pumps are becoming increasingly sophisticated, and incorporate software programmes that can help the user to calculate appropriate bolus doses of insulin (i.e. insulin specifically taken at meal times) in accordance with car- bohydrate consumption.Therefore, advanced carbohydrate- counting skills (Hall, 2013; Cheyette and Balolia, 2013) are an essential requirement for successful use of pump technol- ogy.This has been identified as fundamental in the NICE guidance (2015a; 2015b).