Seasonal lattes and hot chocolates being sold by some High Street coffee chains can contain up to 23 spoonfuls of sugar per cup, a study has found.

Axar.az reports citing foreign media.

Action on Sugar analysed more than 200 drinks and found "shockingly" large amounts of sugar in many of them.

Some were made using vegan-friendly alternatives to cow's milk.

The "venti" (a pint) Starbucks Signature Caramel Hot Chocolate made with oat milk but topped with whipped cream had the most.

It contains 23 teaspoons (93.7g) of sugar and 758 calories, which Action on Sugar says is as much as three cans of Coca-Cola or four white chocolate and strawberry muffins.

Next was Caffe Nero's Grande Salted Caramel Hot Chocolate made with skimmed milk - containing 15 teaspoons (nearly 60g) of sugar and 503 calories.

Third highest in sugar was a venti Starbucks Gingerbread Latte made with oat milk - containing 14 teaspoons (56.6g) of sugar and 523 calories - the same as 17 custard cream biscuits.

Some of the coffee chains included in the study say they offer a variety of low-sugar options to customers, as well as these more indulgent drinks.