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The figures revealed that there is one 'severely obese' child for every classroom in the country.

The data shows a clear link between obesity and social deprivation - with the best and worst areas in the country being just five miles apart.  

Paediatricians warn the map is evidence that successive Governments have failed to tackle childhood obesity, fueling 'appalling life-long consequences'. 

It comes after it was revealed that an obese 12-year-old girl has been taken from her mother after doctors found her BMI is at a 'dangerously high level'.

The data shows that 44 per cent of 11 year olds in the north London borough of Brent are either overweight or obese - the worst region in England.

The figure is almost double that of the slimmest borough (25 per cent), Richmond-upon-Thames, which sits just five miles away.