Most houses don't have an external mailbox, the mail goes through the front door and into a basket. A lot of houses on terraced streets have no front garden and

Most houses don't have an external mailbox, the mail goes through the front door and into a basket. A lot of houses on terraced streets have no front garden and open directly onto the road, especially in cities. There is doorstep letter and parcel collection for less than a dollar. https://send.royalmail.com/ https://send.royalmail.com/