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Four-engined medium air liner.
Miles Aircraft built a 4-engine passenger plane
The Marathon originated as a design to meet the requirements of the Brabazon Committee. It was designed by Miles Aircraft Limited as a high-wing cantilever monoplane with four engines and all-metal construction. It was capable of carrying two crew and up to 20 passengers. The aircraft was designated the Miles M.60 Marathon with the first of three prototypes (registered U-10) flying on 19 May 1946. A total of 25 aircraft were ordered by the Ministry of Supply and 25 by British European Airways, but Miles had financial problems and needed orders for over 100, not helped when the prototype aircraft crashed and the power shortages led to the loss of components already produced. When the Miles company went bankrupt, Handley Page bought the assets, including the factory at Woodley near Reading, Berkshire and design rights to the Marathon.
The new company, known as Handley Page (Reading) Limited, started producing the Marathon with 40 aircraft built over the next three years with the new designation Handley Page (Reading) H.P.R.1 Marathon 1. A twin-engine prototype turboprop-powered version (using the Armstrong Siddeley Mamba) was flown in 1949.