Just type your code into the 'Add Promotional Code' box on the Shopping Bag page and click 'Apply' to add it to your order.
Remember: it's one code per order. Make sure you check the terms and conditions, and use it before the expiry date so you don't miss out!
If you do happen to have any problems with a code, click the button in the bottom left to start chatting with us. If Chat's unavailable, please click here to leave us a message.