Mikey, there will always be a sizeable proportion of the population "living below the poverty line" because the poverty line is a moveable feast, related to average income and is not an absolute definition. If average income goes up (and those at the lower end do not receive more pay or benefits) there will be even more people below the poverty line without anything else changing. The measure is meaningless.
I'm somewhat exhausted from this now as I don't think there's much more I can add, but I would like to reply to your suggestion that I go to have a look at a food bank. I do three lots of voluntary work in other directions already so don't have the time. However I did take a peek at the Trussel Trust's website and was interested to note that, after concentrating its initial efforts in Bulgaria, it started operating food banks in the UK in 2004. This was long before this government came to power, a good time before the financial crisis of 2008 and quite a time before the modest cuts (or "sanctions" as Dr F prefers) were formulated. Indeed Mr Henderson's first recognition of the problem in the UK was as long ago as 2000 (when a single mother demanded to know what he was going to do about her children having no food. My answer may have been somewhat different to Mr Henderson's). So their need is not recent. It is also interesting to note that customers served at food banks have increased 15-fold in three years. This means that some 850,000 more people availed themselves of food banks in the year 2013-14 than three years previously. Are we seriously to believe that the circumstances of these 850,000 people have deteriorated so much in three years that, whilst they could get by in 2010-11, they could not last year.
Sorry but I don't buy it and I can only repeat what I have already said: food banks are used because they are there. I cannot believe that people are poorer now than even twenty years ago, let alone fifty. Food banks were not around then and people did not starve. I am not denigrating what you and your colleagues at the Trust do; each to their own and almost all voluntary work should be applauded. (Though I must say I am a little disappointed at the apparent heavy involvement of Tescos. As a shareholder who has seen my modest investment decline in the past twelve months because of poor management I would like to see that company concentrate on its customers and shareholders).
I do dispute your assertion that my view is jaundiced. I meet all sorts of people in connection with my work - some on benefits, some working and some both and I cannot say that any of them - including those in receipt of benefits - has struck me as destitute. I don't think that visiting a food bank will alter my views. Whilst it may demonstrate the numbers of people using them (which I do not dispute) it will not help explain the underlying reasons behind their huge growth.