Aircraft and Helicopter crashed in mid-air in Waddesdon

An aircraft and a helicopter have crashed in mid-air over

Buckinghamshire, the Air Accidents Investigation Branch (AAIB) said.
Emergency services were called to the site near Waddesdon Manor, near Aylesbury, at 12:06 GMT. The AAIB said it was sending a team to investigate.
Ambulance crews said there had been a number of casualties at the scene.
A Wycombe Air Park spokesman said both aircraft invColved came from the airfield near High Wycombe.
Source BBC News.