Took a test drive with the dealer/garage, we hit 70mph and there was a rattle/buzz that all 3 of us in the car could hear.
Dealer said he has another car with a similar problem and will investigate with Seat HQ and if he can fix it he will call me in a week, to get my car in and fixed as well.
So got to wait a bit and see
Xe good (or bad) not sure which is the best to say, at least they all witnessed the rattle/buzz. This appears to be a more and more common fault / problem, I'm sure there are more lurkers with the same issue.
Thanks for the update and keep us posted on the progress with Seat HQ. BTW where abouts are you i.e. which Seat main dealer?
Cheers