A couple of days ago - some sort of brown hawk, maybe a buzzard but looked a bit too small and not quite right. Perched on a fencepost next to the road, flew off as I approached then circled behind me, keeping very low all the time, then landed in a field on the other side of the road.
Wonderful photos above from David Martin and Chris. I've just been to see the Wildlife Photography of the Year exhibition at Bristol Museum, and I swear some of the ones here are virtually as good.