Ok so thanks to @Extracurricularfatigue I’m almost certain of the former occupants. I vaguely know the grandchildren and certainly have close connections to their friends.
The gentleman who owned it is deceased and was the gentleman who was protective over the car. Either that or his son...everyone looks ancient when you are little! But the son is the image of the man I remember.
There is no showbiz connection that I can identify. It’s obviously been a couple who lived there and the gentleman died there sadly. Makes me feel even sadder now. But hopefully they had a happy time there and some fabulous parties.