Select the corresponding offer for your voucher and click "View" and then "Add to Basket". You can also shop for other items.
When ypu're done shopping, click "View Basket' found at the top right corner of the page.
On your shopping basket you will see a box labelled as "Promotion Code", simply type in or paste your code in the box and click "Apply". Your total will be adjusted accordingly.
Choose your preferred delivery method and click "Go to Checkout" to log in to your account with your email and password or if you don't have one just enter your email address and tick "No. I don't (You can create an account later if you wish)". click "Continue" to proceed.
Provide your billing and delivery details to finalize your order.