Several of the UK's leading supermarket chains have come under fire from the animal protection group the RSPCA for failing to ban eggs produced by intensively farmed battery hens. Asda, Safeway and Sainsbury were particularly criticised by the RSPCA, while Marks and Spencer, Selfridges and Harvey Nichols were praised by the charity for their free-range produce. Marks and Spencer was singled out as the most free-range friendly because it only sells eggs from non-battery hens. The RSPCA warned that many stores use battery eggs in their ready meals and recipes for cakes and sauces.