Mr Salmond said that supermarkets could have afforded the tax: "Take Sainsbury's, for example, who were moaning about it. They would have been asked to pay in a year - in a whole year - £2.5m more as their contribution. £2.5m more in a year. That is their revenue for a single hour. They are making that in a single hour, and yet they moaned about having to pay that additional amount to help everyone else in a difficult economic situation over a year."