If you go to
http://maps.live.com/ and type in LU2 9LY click on search maps and then (this is the important bit) click on birds eye view you will get a great summer 2006 view of Luton Airport that you can drag around. You can also zoom in up to 20 yds. This is a completely different shot and more up to date view than selecting aerial.
You can get rid of the box on the left to maximise the picture, now just count those biz jets scattered around the airport
