The Food Standards Agency (FSA) maintains the UK Nutrient Databank, which contains extensive information on the nutrient content of foods commonly consumed in the UK. A range of books based on information from the databank and containing nutrient composition data have been produced. These books comprise the McCance and Widdowson’s The Composition of Foods series (CoF) which provide extensive data for different food groups. Because of the way in which the series has evolved there are often two or more separate entries for a particular food, each entry including different nutrients and/or different values. A dataset containing a single entry for each food has been produced by examining each of the multiple entries and using the values which are most appropriate. The UK Nutrient Databank does not contain values for all nutrients for all foods and therefore the CoF IDS will not have a value for every nutrient for every food. Foods calculated by recipe or calculated based on another food (e.g. foods weighed with waste) have been recalculated to include the most recent data for ingredients and the dataset therefore contains some newly created codes which have not previously been published.