I am not sure if this is relevant or of use to anyone on here, but I have seen about 4 accidents near Newport Pagnell in the last 3 months. It is on the second roundabout (Anker Int.) as if you where heading towards Onley on the A509.
If you go that way in the wet as it is "very" slippery, be careful. I know we have Subarus, with AWD, but I don't thing that would stop you from hitting the arnco barrier and / or ending up min the ditch.
If you go that way and it is wet, be careful.