Regarding Bilstein B6 and the roads in Norway i would say they would be perfectt in the UK since your roads are actually roads and not something that was a road in 1960 and has then been fixed half-harted ever since..
I have still only mounted the rears on mine and after 3.5 weeks i still love them. Ride quality is perfect and not harsh in anyway but not soft like A8 without sport suspension. Perfect for a family car
