We saw the bird immediately on arrival after checking with the handful of others who were there. After a while it came nearer and actually came over the river to our side. It was about 100m away. Someone suggested approaching it as a chap who had just left passed close to it and it didn't fly. We got closer and closer until I was about 25m from it and was able to take some close shots before an off-road motor cyclist came thundering through.
We watched it for another half an hour and then headed back to the car as it started to rain lightly. Here is the star bird which has stayed in the same area for almost two months!
Brown shrike, Staines Moor.