Thanks Donald I appreciate it, I must add that the scuffed rim at 2.00 O'clock came with the car.I've saved DSC05739 to take a closer look and can instantly see several areas of corrosion.
There is a point in doing this - whether or not it is minor you need to raise it before 3 years old else Vauxhall isn't interested.
.... I am anticipating some small claims action in my case.
I'll annotate some photos later for you.