Yes that is good advice xenophobe.

The scratches that are through to the undercoat appear to be from individual scratch events rather than washing and polishing slowly grinding through the layers.

I agree that it should be assessed by an expert. If this car was in silver I would hardly have noticed these defects, but I am hooked on the look of black/anthracite. My goal would be to bring the paint back to its original show-room appearance.