Please double-check you are entering the voucher in the correct box - it's very easy to enter it into the Offer Code box by mistake as they look alike. The voucher code box is case-sensitive, and the code has to be entered exactly as printed for it to work. Sorry, we know it's long ! 

If you are using a membership voucher, you need to make sure you log in before you order. See Membership Vouchers for more information on how to do this.