Mainland Britain’s oldest post box still in use is reckoned to be located in the village of Holwell, near Sherborne. Dating from 1853, it was made by Messrs John Butt & Co of Gloucester. Inscribed with the initials of Queen Victoria, it is unusual being octagonal in shape with a vertical letter slot. Apparently, Royal Mail enthusiasts travel from all over the country to view its unorthodox features. Vertical letter slots were discontinued as it was discovered they provide a lesser shield against rain water. By 2014, the Holwell post box had become quite delapidated and for its refurbishment it had to be stripped right back. The first post boxes in Britain were introduced in the Channel Islands a year earlier as an experiment. These were not red but had a distinctive blue colour. Four post boxes were installed first in Jersey followed by six in Guernsey. Guernsey Post has installed heritage plates on some of their closed post boxes and there is also a Post Box Heri...