Please note: this is applicable for domestic returns within the UK only.
Paid returns labels are generated via this link: https://www.royalmail.com/track-my-return
*Bookmark this link on your browser as it is not easy to navigate to this page from the Royal Mail main website.*
You can either link the customer to the page to fill in themselves, or create it yourself and send it through to them.
The process for creating a return label from here is demonstrated below.