Instructions:Just had an email from Tesco; hopefully this voucher will be ok for general useage -
T's & C's -
£10 off is valid on a minimum spend of £50 at tesco.com/groceries. eCoupon XXLCFG is valid for a single order, delivered before 23:59 31st May 2011. Only one eCoupon can be used per order and each eCoupon can only be used once per transaction and once per customer, therefore if this eCoupon has already been used it cannot be used again. eCoupons are and shall remain the property of Tesco Stores Ltd and are not for re-sale or publication. You must sign-in and shop using this email account to redeem these eCoupons. Normal eCoupon terms and conditions apply - see website for full details. eCoupons cannot be used in conjunction with any other beginning XX.