These cars were part of the badge engineering which went on in the British car industry. It was basically a Hillman Minx but was souped up with a more sporting engine, neat fold down side windows which completely opened up the side of the car. They added the Sunbeam name to give it a sporting air. They did the same with a uprated Hillman Imp and the Sunbeam Alpine touring car.
My connection, it was in this car owned by another Peter this time, that I went with the two Peters and a girl called Carolyn ona motoring tour of Europe. It had overdrive on second, third and fourth gears giving a 7 speed gearbox. Despite the heavy load, four people and camping equipment it got us from Leicestershire as far as Geneva and back via Paris. Nice cars.