To this day mail boxes marked VR for Queen Victoria and ER for Edward VII can be found around the country. After the Irish gained independence from England in mail boxes were painted green over the English red.
To commemorate British gold medal winners at the 2012 Summer Olympics and 2012 Summer Paralympics, postal companies including Royal Mail painted a number of post boxes gold. Each gold medallist had a post box painted in recognition of their achievement, usually in their home-town. It marked the first occasion in modern times that the colour of post boxes in the United Kingdom had been changed from their traditional red.
Edwardian post box beside the Punch Bowl Hotel, Low Bentham, N. Edward VII only reigned from 1901 until but it's possible to isolate the date of this lamp box's manufacture still further, as the Royal Cypher was apparently only used from