We saw it circle the Avon gorge/Southville area 4 times from our allotment in Ashton Vale, on Bristol.
As it was the first week we've had this allotment, plus the first good bit of warmth & sunshine this year (plus I'd pulled a sickie from work) - we assumed it was flying round to congratulate us!!
We would really love to know what it was doing though - it was such a fine sight on its own, i'm gutted I left the camera in the kitchen at home.
I hope someone has the real answer as to why it was in the area.