Britain should introduce the world’s first tax on sugary and salty food, a report recommends today. The “snack tax” could add £3.4 billion a year to families’ shopping bills, with a 60p Mars bar costing 9p more. With 56 million people currently living in England, it means £60 per year will be added to each person’s food bill on average — £240 for a family of four. The money should be used to pay for GPs to prescribe fruit, vegetables and cookery classes on the NHS to help prevent obesity and ill health, the Government-commissioned review says. The radical proposals...