It would be great to be able to put in more than one voucher code at one time. For example, if I put in a code to get a discount, but also be able to put in my $10 sign up voucher code or $20 gift code as well. I wouldn't even mind if there was a minimum spend to use that second code too. As it would be great to be able to combine a few at once. Make use of the over $50 free delivery purchase all at once.