Well even though I give the car to a local hand wash, I shouldn't imagine that they would be too keen on spending this extra time on my car without charging me.
So it looks like I'm edging towards Silver Seal because it seems less time consuming in the aftercare.
Thanks you also for the contact number. If I can establish competative price through a local dealer I'll have that work done when I pick up the vehicle in September.
Thanks again Sue and to Rob for all your help.
Robbie.