Very well found. In fact you have obtained more information than I could, and your reply is well worth the point.
I thought the car had been built by Matthews. In fact Turner built it in 1952, the car was raced by Matthews in 1954/56, and he sold it to William Oberem who raced the car until 1960. It is Oberem who is sitting in the car in the puzzle photo, but I'm quite happy to award you the point after such a lot of research.