The Saunders-Roe SR.A/1 was a prototype jet-propelled flying boat fighter, developed during the 1940s with the intention of eliminating the monopoly held by aircraft carriers on launching jet fighters. Described as being the first water-based aircraft to harness jet propulsion in the world, the SR.A/1 attracted interest from both British and American officials, with data on the project being transferred. However, officials concluded that the concept had been rendered obsolete in comparison to increasingly capable land-based fighters, together with the inability to resolve engine difficulties, compelling a termination of work. During June 1951, the SR.A/1 prototype (TG263) flew for the last time.