* powered by mySupermarket.co.uk and independent data. Comparison made against Tesco and Sainsbury's online and Morrisons in-store only. Asda, Tesco and Sainsbury's prices checked online on Monday 3rd September 2012 by independent comparison site mySupermarket.co.uk. Morrisons' prices checked independently in-store on Monday 3rd September 2012 and validated by mySupermarket.co.uk. Comparison based on 6,549 products on Asda, Tesco and Sainsbury's websites and in selected Morrisons stores across Great Britain. Includes promotional prices. Online prices may vary from those in-store. mySupermarket.co.uk & independent data. For verification contact ASDA LS11 5AD.