This is Lord Freud's (Conservative member of the House of Lords and a Minister) explanation for the rise in food bank users:
Challenged by the Bishop of Truro, the Rt Rev Tim Thornton, over whether ministers conceded a link between the benefits system and food bank use, Lord Freud replied that it was difficult to “make the causal connections”. The minister for welfare reform added: “It is difficult to know which came first – supply or demand.”
“Food banks are absolutely not part of the welfare system that we run. We have other systems to support people.” Asked what he meant, he replied: “If you put more food banks in, that is the supply. Clearly food from a food bank is by definition a free good and there’s almost infinite demand.”