Placing collections on the web
Firstly head to your Basket, check your order in here and click on the checkout button.
This will take you to the Delivery section of your order. Fill out the information required and as it is a collect you can click to make the shipping the same as the billling. Once you have filled out the information click on the checkout button.
On the next screen (payment), underneath the shipping box you will see an option: "I will collect" click on this and choose a payment method to confirm your order.