Food banks warn surge in demand will prevent feeding hungriest this winter

Exclusive: Nearly 70% of providers say they may need to turn people away or shrink the size of emergency rations

Food banks across Britain have warned of a completely unsustainable" surge in demand that will prevent them feeding the hungriest families this winter.

Organisations representing 169 food banks told the Guardian the number of people seeking emergency help had already grown dramatically" and predicted bleak and disturbing" weeks ahead.