Hi there,
Unsure if you will see this comment but when editing, you added "Mail Boxes Etc." as the name and brand, which is an Italian company. While they do have locations in the UK, your note (https://www.openstreetmap.org/note/3613829) indicates this is a Royal Mail postbox, and not a "shop=copyshop"

I have rectified the tags, but please be careful in future should you return to OSM :)

Happy mapping!