Here are some more photos of yesterdays star bird taken by the well deserved finder Johnny Allan ( http://surreybirding.blogspot.com/)
The bird looks like an adult. A 2nd calender year bird should show various juvenile plumage features such as white streaking to the underparts and pale edges to the greater coverts but this bird looked pretty uniform - like an adult (however the underwing is in a lot of shade in the photos). The bird is obviously in moult- some of the inner primaries and inner secondaries are missing. According to Forsman the moult in adults starts from April to May and is suspended during migration- although moult in a vagrant context is always a complex consideration.
Black Kite is a very familar bird to many travellers and occurs across a wide area from western Europe to the far east, Africa to India to Australia. Black Kite occurs in 7 different races or subspecies and presumably the Beddington bird is of the nominate race migrans.
Here's a couple of my old holiday snaps- good to see a bird over the local patch that is so evocative of exotic distant places.
Black Kite over the Taj Mahal, India, 2008
Black Kites over the Sea of Galilee, Jordan/Israel, 2009