The first prototype Miles Marathon, first flown on 19 May 1946 wearing Miles test registration U-10. The aircraft was already registered as G-AGPD almost a year earlier on 5 June 1945; a peculiar British habit. This registration was not applied until July or August 1946. Photo from: Imperial War Museums

Built in 1950. Registered to Derby Aviation in 1955 and cancelled as destroyed in February 1964. It has 'DA' plus the registration last two letters 'GW' on the nose in the style of BEA.

The second prototype of the Miles Marathon over The Needles, off the Isle of Wight. Formerly G-AILH. Continuing as the Handley Page Marathon, the 20-passenger airliner type was unsuccessful and used mostly by the RAF as a navigation trainer.