Well finally fitted( not 100% thought but secure for now).
In the end I had to cut through the plastic bumper underneath to pull the screw out as could not loosen them from the bolt as looked totally seized. Also one of the screws under the arch I could not get off I had to break open the screw hole on the bumper part I was removing and then snap the clip off and the screw came out.
Phoned my local VW dealer who advised they could order the screws in so will sort this out next week.
So below are the before and after shots and at least to me looks like a an improvement and still to get colour coded yet
.
Apologies for the dirty car
Before
After