This is horrible - a light aircraft has crashed in a residential area while taking off or landing at Biggin Hill airport. The crash site is less than a mile from my little brother's old school, and about a mile from my parents' house:
(click to enlarge)
I don't think there have been any aircraft crashes in the area in several years, the last - if I remember correctly - being associated with the Biggin Hill airshow, and eyewitness descriptions at the moment seem to suggest the plane was in some kind of mechanical difficulty.
It's horrible when something like this happens; it's worse when it's practically in your "back yard", and my thoughts go out to everyone affected by the incident.