Instructions:Spend £50 or more on your grocery order in a single delivery. Enter the code above at the online grocery checkout. Must be used before 31/3/08. Note if you make a mistake in entering the code Tesco.com often doesn't give you a second chance and will disallow the voucher. It also states that this code is unique to 'you' and can only be used once so do not know if this will work for everybody else but thought it worth a shot!