Registered as G-AMHT in March 1951 and transferred to the RAF as XA274 in March 1952. Underwent various trials during military service and returned to F.G. Miles Ltd at Shoreham as G-AMHT in December 1958. One of four ex RAF Marathons purchased by Miles and delivered to Shoreham, G-AMHT was the only one to be overhauled and flown. Its last flight, in April 1962, was the last Marathon flight ever made and the aircraft was scrapped at Shoreham in May 1964.