Using a uOpen discount code is really simple.
Simply add a subscription box into your basket and click 'checkout'
Then enter your discount code into the 'Do you have a discount or promo code' field which is on the delivery page in the checkout process, and click 'Apply'.
Once you have entered the code, you will see a message telling you that your discount code has been successfully applied.
You will also see the discount applied to your order summary amount on the right hand side of this page.