Health commentators have welcomed the introduction of the longawaited ‘sugar tax’ that came into force on 6 April, saying that it will help the UK tackle obesity rates and improve the nation’s oral health.

Manufacturers will now be liable to a tax rate equivalent to 24p per litre on drinks containing more than 8g of sugar per 100ml. A lower rate of 18p per litre will apply to drinks containing 5-8g of sugar per 100ml. Figures show that half of all manufacturers have reduced the sugar content in their drinks to avoid paying the levy.

Public health minister Steve Brine welcomed the tax on high-sugar drinks, saying: “Our teenagers consume nearly a bathtub of sugary drinks each year on average, fuelling a worrying obesity trend. The levy is a ground-breaking policy that will help to reduce sugar intake.”

The British Dental Association described the levy as an “excellent first step” but called for additional measures such as tighter controls on advertising and applying the tax to sugary foods as well as drinks.