Once on the Checkout page, on the right hand side below your items, there is a box for your code. On a mobile device you will need to reveal the "Show Order Summary" tab and input your code there. Simply type in the code, click ‘Apply’ and your discount will be deducted from your order. New customers can get a discount code by signing in up to our newsletter - Existing customers get an exclusive discount on their paperwork when they receive their orders to use against their next order - this is our way of saying thanks for shopping with us!