'Equivalent of four doughnuts': experts warn of high sugar in alcopops

Calls for tax hike as analysis shows one pre-mixed drink contains 15 teaspoons of sugar

Pre-mixed spirit and cocktail drinks sold in supermarkets contain up to nine teaspoons of sugar in just 250ml, according to experts, who say the beverages should be subject to the sugary drinks tax.

Such drinks have become increasingly popular in recent years but Action on Sugar, at Queen Mary University of London, found many are high in hidden sugar and calories and additionally lack information about their nutritional value.