I've just got in from a good few hours spent in Bletchley Tesco car park!
There are 150+ waxwing constantly moving around the car park, they prefer to sit in the tall trees over the road in the TK Maxx area and then all swarm down onto the berries in Tesco car park. They don't feed for long though as they are soon chased off by a Mistle Thrush, and I think the Saturday shoppers are spooking them a bit, so they fly back into the tall trees after 30 seconds or so. This made it quite hard to count them; also the fact they seem to split up into 3 separate flocks doesn't help, I wouldn't be surprised if there are 200+ in total. The berry stock is starting to look quite low, they may well polish them all off by tomorrow.
Also, I was at Caldecotte for an hour or so in between car park watching and another 30 or so flew over towards Tesco (Paul Gibbs)