Pies, ready meals and sandwiches will also be subject to the new proposed calorie limits, in a desperate bid to tackle Britain’s obesity crisis.

Under the draft proposals, a standard pizza for one should contain no more than 928 calories – far less than many sold by takeaways, restaurants and shops. And the recommendations suggest that a savoury pie should contain no more than 695 calories.

Public Health England (PHE) said “drastic” measures were needed to combat Britain’s obesity crisis.