This article suggests that supermarkets are hiking up prices at a time when their costs are actually going down. According to the article although supermarkets claim to be cutting prices for their customers, they have actually imposed price increases on staple foods. The increase in costs could add as much as £1,100 a year to a family's grocery bills. The big four stores, Tesco, Asda, Sainsbury's and Morrisons have all been criticised for fattening up their profits at a time when they could be passing the savings onto hard pressed customers.