What car and is It the door or the root panel? If just a door just change the skin for one off a salvage car, best way to get paint matching.
Though remediation of the panel and paint I doubt would cost more than £600
Looks like something was dropped on it
The damage I posted up thread - any recommendations on where to get it repaired and what the likely quote cost is? North London preferred.
If I went the insurance route, I would have a £350 excess and bump in future premiums I guess.