Well he looks like Archie Scott Brown, and, although we normally associate him with Brian Lister's Lister cars, before that he did drive a Tojeiro owned by Brian Lister so perhaps it had an RGS body and this is it.
PS Shattock made RGS bodies; it was only when they were on his Atalanta-based chassis that the RGS-Atalanta name was used.
My mistake, of course it is an R.G.S. body.....
The car is not a Tojeiro or a Lister. The make is a very well-known one (as far as the public are concerned).
As I mentioned earlier this car has appeared in many different forms but this is the only photo I've seen of it wearing an RGS body. The Jaguar engine is not the original either.
It is Archie Scott-Brown - can you guess the event or circuit and the year for a point?
Another point is available if you can come up with the base car.
Locked for you until your next reply Allan.....