Vouchers are valid for one year on our UK online store (excluding mobile version).
Just select Use a gift card, coupon at the payment stage when confirming your order then check Coupon. Then, enter the numbers under the bar code and security code.
Vouchers can only be used once and can be used in conjunction with any other payment method.
Please note that you cannot use more than five vouchers for the same order or for orders above £3,000.