Underpaid Postage
Importance of a Return Address
We recommend you include an external return address on all items posted to local, UK and foreign destinations. The best place for your return address is on the back of your post (in the middle at the top, no bigger than 70mm x 30mm).
Companies with franking machines can put their return address in the slogan block in their franking impression. The supplier of your machine will automatically apply Royal Mail's Return Address Guidelines that we have adopted for ease of handling. If you want to protect your company's identity you can choose to have a PO Box address as your return address.
Adding a return address ensures that any undeliverable post can be returned by the delivering administration. Return of undeliverable post cannot be guaranteed if the your details are not on the outside of the item.