Click "+ to basket" when you've found what you need, then scroll up to the top of your screen to find the "checkout" button. Click it and you'll be taken to your basket where you can take a look over your order and make sure everything's correct.
Open promotionalcodes.org.uk in a new window and find the Pharmacy First code you want to use on your order. Next, click "view code & open site" and copy the code. Click back over to your Pharmacy First basket and paste it in the gift certificate/voucher code box and click "update," then click "checkout now" once your code has been applied.
Click "create account," enter your contact information and create a password, or login using your Pharmacy First password.
Check that your delivery and billing addresses are correct, or amend them if needed. Click "checkout now" when you're certain that your order details are right.
Choose a payment method and then click "submit & continue." You'll be taken to the Sage Pay site, where you can select a card type and enter your details. Click "proceed" when you're done, and then your order is sorted!