Starbucks, Costa and Caffè Nero have been accused of fuelling the obesity crisis with their sugar laden speciality drinks. The six pictured above are the worst offenders identified by the campaigning group Action on Sugar. Its survey of 131 flavoured hot drinks found 98 per cent would receive a red label for high sugar content under guidelines drawn up by the Food Standards Agency. The recommended daily amount of added sugar for an adult is 30g or around seven teaspoons. The worst offender was the large - or venti - serving of the Hot Mulled Fruit drink from Starbucks (top left). It comes with chai, orange and cinnamon and contains a staggering 25 teaspoons of sugar per cup - more than three times the recommended daily amount for an adult. The five top offender are: Costa Coffee's Chai Latte (top centre), Starbucks' White Chocolate Mocha with Whipped Cream (top right), Starbucks' Signature Hot Chocolate (bottom left), KFC's Mocha (bottom centre) and Caffè Nero's Caramelatte (bottom right).


