Removal based on surveys by me on foot and did not use the incorrect, (probably not open data), information on the Royal Mail priority postbox finder (set up to help people locate postboxes for returning Covid 19 test samples).

Concerning how out of date the details are, but at least OpenStreetMap is available with correct details
https://www.royalmail.com/services-near-you/postbox/the-spot-a-de1-2hr/0000DE1750
https://www.royalmail.com/services-near-you/postbox/the-spot-b-de1-2hr/0000DE1104
