Secondary schools will be banned from selling chocolate, crisps and sugary drinks when the autumn term starts next week.

A new anti-obesity campaign requiring schools to serve healthy food became mandatory in primary schools last year following a campaign by TV chef Jamie Oliver to improve kids’ diets.

Under the new guidelines, all English state secondary schools in England are now required to limit serving burgers, sausages and meat pies to once every two weeks, as well as removing junk food from vending machines and tuck shops.

“Obesity is the biggest health challenge this country faces,” health secretary Andy Burnham told the Daily Telegraph. “Nutritious school lunches can make eating well a healthy habit for life.”