I had always considered it Sandy Beige, but now I'm not so sure, it might be Tunis Beige, it has a red interior also, I'm going to check the paperwork tomorrow when I get back to the car, I do know that it is still the original paint and has been unrestored.
I drove it today and already feel that the decision to bring it back to London is one of the best decisions we have made in a while.