Christmas drinks sold by Starbucks, Costa and Pret have up to THREE times more sugar than a doughnut

EXCLUSIVE: MailOnline analysis found a festive hot chocolate at Starbucks in the UK has nearly as much sugar as four doughnuts and more calories than four chocolate biscuits.EXCLUSIVE: MailOnline analysis found a festive hot chocolate at Starbucks in the UK has nearly as much sugar as four doughnuts and more calories than four chocolate biscuits.Read MoreHealth News | Mail Online