The Rootes group launched its answer to the BMC Mini in 1963, the rear engined Hillman Imp. The Imp was quickly "badge engineered" into Singer and Sunbeam derivatives including some pretty "fastback" models. The standard car used a two door bodyshell with a novel opening rear window/hatch, all Imp's were built in a brand new factory built in Glasgow with government grants.
The Sunbeam Imp Sport used a tuned version of the standard Imp engine. It featured a high-lift camshaft and twin-carbs and developed 51bhp. The Sunbeam Imp Sport mirrored the Singer Imp variant in many ways and shared its twin headlamps from 1970. Standard equipment included servo brakes, an oil cooler and extra instruments.