Although there is no evidence that individuals with type 1 diabetes have a different approach to alcohol compared to the background population, nevertheless, its use does have implications for patients mainly because of the risk of hypoglycaemia unawareness. However, binge drinking has been implicated as a factor in the development of ketoacidosis and is probably under-recognised. The aim of this study is to examine the effect of binge drinking on glucose, insulin, counter-regulatory hormones and other metabolites in patients with type 1 diabetes. It is hoped that data from this project will be used to develop a larger study comparing different treatment regimens for patients using alcohol to reduce the risks of hyperglycaemia as well as hypoglycaemia.