It is exactly the same regulations in the UK and the Netherlands (being Dutch and living in the UK I have both experiences). The Murano having a full 3-point seat belt in the middle was actually one of the deciding factors for me an my wife.
Our current Patrol (roll-on March for the first UK Murano's...) only has a lapbelt in the middle which makes it very difficult to handle our little girl on longer journeys as she obviously can't sit in the middle...
It do agree with one of the posters here, my daugther is now 2 but before she was one she was way to tall to sit in a reverse facing car-seat. This made journeys for all of us unbearable, just we ignored the guidance and got the forward facing one early for here, but ensured that the angle was adjustable so she could still lay back(ish).
We just went to a baby-superstore and had about 14 different ones fitted before we found one with no movement.
It was sound advice provided earlier: once fitted there should be no movement at all in the car-seat, grap hold of it and shake the car, but there should be nothing in the seat itself...Oh and also ensure your baby is nice and tights, and when they say they are sore, it is only because they repeat what you just said to each other ;-)