Health campaigners are calling for better alcohol labelling as a survey found just one in five Britons know how many calories are in a glass of wine. Just 20% of the public could correctly estimate how many calories are in a medium 175ml glass of wine at 12% ABV (133kcal), the YouGov poll for Action on Smoking and Health found. Just under a quarter of the public (23%) could correctly estimate how many calories were in a pint of lager at 5% ABV (239kcal). Estimates were deemed correct in the survey if they were within 50% of the true value. Just 18% of the public know that the chief medical officers’ drinking guideline is to drink no more than 14 units of alcohol per week, while 34% did not know and 48% answered incorrectly.