 The Napier-Heston Racer design team was led by Arthur Ernest Hagg of Napier & Son, and George Cornwall of Heston Aircraft Company Ltd.It was a single-engined, low-wing cantilever monoplane, purpose-built as a contender for the World Speed Record.It was built almost entirely of wood, that served to ensure rapid construction, a "superfine" finish, and streamlined, "beautiful" lines.