British Air Transport – The Pioneering Days 1919–1934 is an 8.44-metre (27.7 ft)-long mural by William Kempster depicting, from left to right, a chronological sequence of events in the history of British aviation on the London to Paris route starting on the left with Hounslow Heath Aerodrome in 1919 and finishing on the right at Croydon Aerodrome (now Airport House) in 1931.

The painting was commissioned by the British Airports Authority in 1969 to mark the opening of Heathrow Terminal 1, London, where it was displayed until 2015.

[2][dead link‍][3] It was unveiled at Heathrow's Terminal One on 17 April 1969 by Prince Philip, in the presence of Queen Elizabeth II.

[4][6] The painting depicts, from left to right, a chronological sequence of events in the history of British aviation on the London to Paris route (1919–1934).

[3] A highly competitive London to Paris route was operated by the Aircraft Transport and Travel (AT&T) company, from Hounslow Heath Aerodrome.

Above is the British Marine Air Navigation Company Ltd's Supermarine Sea Eagle flying boat, which flew from March 1923.

[2] A man identical to a description of the first pilot to circumnavigate the world via flight, Wiley Post, is seen in the centre of the painting.