Here is the way to get free delivery at very plus discount of £3.95 no minimum spend, this is a bit tricky as you need to enter combination of 3 codes to get this discount and don't know how will they act if too many people will use it so be carefull..
Enter these codes at checkout:
ZQ352 - FREE DEL VOUCHER
XX728 - Sorry. This promotion cannot be applied to your order.
XX182 - Another high value promotion has been applied.
Don;t worry if it say that it cannot be applied, it will add discount anyway, has placed order sucessfully and received email confirmation.