Help trying to remember my first racer

[Deano]

I've done some searching and googling but I can't find anything. Circa 1980. I think it was 12th scale. It was in the shape of an F1 car, Saudia Williams livery. Body wasn't Lexan,but regular plastic. Chassis was very basic, could have been flat ally sheet or maybe FRP. It wasn't Tamiya. I had a feeling it was Mardave, but I can't find any reference to any Mardave that fits the description.