Pillar box - Wikipedia
Ludlow style wall box - Wikipedia
Is photographing post boxes Britain's most boring hobby?
Magical Mystery Tour in search of Boxes… – humbugshouse
R706715 Kidderminster. The Letter Box Study Group. Postcard No. 125
Kevin Wiblin (@KevinWiblin) / X
These images are from day one of the Letter Box Study Group advent calendar - more info in the comments : r/Postboxes
UK postal service goes high-tech to thwart thieves
These images are from day one of the Letter Box Study Group advent calendar - more info in the comments : r/Postboxes