Mount Pleasant Post Box

Some post boxes have "Post Office" above the slot, like this one, whereas others have "Royal Mail".
Royal Mail post boxes manufactured since 1994 carry the wording "Royal Mail", normally above the aperture (lamp boxes) or on the door (pillar boxes). Before this date all post boxes carried the wording "Post Office".
Nikon D50 + AF-S DX Zoom-Nikkor 18-70mm f/3.5-4.5G lens at 30mm and f/9.