Near to Windsor castle, situated next to a more usual red pillar box is a blue George V pillar box. The blue pillar box displays the history of ’special’ blue pillar boxes:

On 9th September 1911, Gustav Hamel took of from Hendon Aerodrome to inaugurate the first United Kingdom aerial post and landed in Shaw Farm meadow, Long Walk, Windsor.

The flight was organised to carry special mail celebrating the coronation of King George V.

Within a few years, Air mail services became well established and between 1930 and 1938, special blue pillar boxes were used for posting Air Letters.

This box is adjacent to the site of Windsor Post Office (1887 – 1966) where Air Mail was received from the United Kingdom aerial post.

Next to the two pillar boxes is a historic stamp vending machine.