Get £5 of £40 shop at Asda

Here is the info to get £5 off your Asda bill when you spend £40, you need to to do a price check challenge. I think you spend £40 at Asda then use their website to do a price check on what you bought to see how the prices compare with other supermarkets, then once you have completed that, you get a £5 refund. Full details;

http://www.asdapriceguarantee.co.uk/Administration/Bonus-Details.aspx