Coming back from a night out in Stony Stratford on Friday, we were on route past Hazeley Wood to drop one of the party off in Grange Farm. As we travelled along the end of the H4 (sat in the back) I spotted something moving across the road. It looked weird because it blended in with the orangy/yellow street lights as it crossed the road. We slowed down and actually started to reverse back up the road to get a better look (now all 5 of us were straining to get a look). I can only say it was probably a Ferret.
Description: Bigger than Weasel and Stoat. Long low and stretched out body (classic mustelid shape), white/pale/yellow fur with possibly darker colouring towards the tips of the hair? Didn't get a view of the face and can't remember anything about the colouration on the tail. It was not bothered by us and happily bounded off towards the houses.