Fender62,
// 20% of uk children are obese, 80% are not// so the 20% do not need vouchers, but exercise. //
Wrong.
There are 11,500,000 children in the UK, but only 1,300,000 are eligible for free meals. Here isn’t any way you can say the 20% obese ones are eligible for free meal vouchers. While obesity is more common in affluent people, it can also be the result of poor diet in poorer people.
Obese children should take more exercise. But they shouldn’t eat no meals they should eat healthier meals. When children were being fed at school, they ere getting healthy food. For the limited period of the voucher scheme, the parents control what the child is fed, so they might not be getting healthy food. The result will be more obesity which is why the voucher scheme needs scrapping asap when the present corona crisis is over.