Dear Bob and Malcolm
According to Tony's excellent book the factory was little more than an assembly plant for both the Tourette and the Progress scooters. The engines were Villiers, but do we know who would have made the GRP body, and who would have made the chassis, as there was no welding bay in the factory and no room for GRP moulds. Apart from the wheels, tyres, electrics and glass which were probably all British, what else is there that could be anything other than British?
Interesting to see that the sales address was 852 Brighton Road, which was next to the old Purley Hospital, while the factory backed onto the railway line in Whytecliffe Road.
Chris Thomas