Could it have anything to do with quantitative easing?
From the Daily Mail....
Families are still suffering punishing rises in the cost of living as food prices continue to go up. A survey puts food price inflation at 3.8 per cent, at a time when many are struggling with redundancy or pay freezes.
The spiralling food bills have coincided with bumper profits for the 'big four' supermarkets - Tesco, Asda, Sainsbury's and Morrisons. However, they argue they are having to pay more for the food because of rising production costs.