harrigran The average day school fees are just over £16,000. The second rate one in my town charges just under £19,000 a year for day pupils. At the risk of repeating myself, 80% of all households with children at independent schools have an income above £50,000,which places them in the highest earning 10%. Advance payment is a tax scam. Second hand clothing might save a bit, but it's nothing compared with the fees and extra charges for music lessons, etc.
I know it's intuitive to think that providing free school meals is the best way to ensure that all children are well-fed, but it isn't. It's an ineffective use of scarce resources and needs further investigation, even according to the report the Labour Party has cited. At worst,it risks diverting money from those who really do need some help. I'm not surprised a YouGov poll would support it. Few people would turn down anything free, but I doubt if the implications were explained to them.
PS. I thought this was a discussion about VAT on private education and universal free school meals for primary pupils, not yet another opportunity to have a dig at Corbyn's personal life!