If you are on mobile:
Click through the cart page to the checkout. At the very top of the checkout page you'll see 'Show Order Summary' with a small downward arrow next to it. Tap this, and the Gift card and discount code box will be revealed. Enter your discount code and hit Apply - your new subtotal will show.
If you're on desktop:
Click through the cart page to the checkout. On the right hand side underneath your order details, you'll see a 'Gift card and discount code' box. Enter your discount code and hit Apply- your new subtotal will show.
You can apply your discount code at any point during checkout, and you can review and confirm your new order subtotal before you continue to your payment method. Please make sure you double check your order total before finalising your order - once you confirm your order, you are agreeing for the amount shown to be debited from your account.
Only one coupon code is valid per order.