Red Kite over the Royal Berkshire Hospital

At 4:30pm this afternoon I was walking up Craven Road, past the Royal Berkshire Hospital here in Reading.  As I neared the southern end of the road, I noticed a large bird flying over the hospital car park.  It was so large that I initially though it was a heron, but as it flew closer I saw it had a the forked tail characteristic of a red kite.  I stopped to watch and it lazily drifted directly overhead, always looking down, its wing-tip feathers spread like fingers.  It circled back over the car-park a few times.  I lost it in the trees as I turned the corner into Addington Road.  I suppose it must have come down from the Chiltern hills on the cold north wind that has been blowing for the past few days.