There are a "number of casualties" following a mid-air collision between an aircraft and helicopter over Buckinghamshire.
Thames Valley Police said the crash took place over the village of Upper Winchendon, near the Waddesdon Manor estate owned and maintained by the Rothschild family, at around noon on Friday (November 17)
A police statement said: "We are aware of a number of casualties following an incident this afternoon in Waddesdon, near Aylesbury.
"There were a number of road closures following the incident which have now been lifted.
"We will provide further updates when available."er
Residents of the village reported hearing a large bang when the aircraft collided at 12.06pm on Friday.
Wycombe Air Park, a private aerodrome not far from the crash, has confirmed to getwestlondon that both aircraft had taken off from the air park.
"Wycombe Air Park can confirm that at 12.00pm today we were informed of an incident north-west of Aylesbury involving two aircraft from Wycombe Air Park," a spokesman said.
Buckinghamshire Fire and rescue sent 35 firefighters to the scene to assist Thames Valley Police, South Central Ambulance and Thames Valley Air Ambulance at the scene.
The ambulance service confirmed there have been reports of a number of casualties but was not able to provide further information.
A spokesman said: "South Central Ambulance Service was called at 12.09pm this afternoon to a mid-air collision involving a helicopter and an aircraft in Upper Winchendon, near Aylesbury.
"We sent to the scene a number of resources, including the Thames Valley Air Ambulance, two ambulance crews, two ambulance officers and a rapid response vehicle.
"There have been a number of reports of casualties at the scene but unfortunately at this stage that is all we can confirm."
Nearby RAF Halton has confirmed that none of the aircraft involved were from the military.
There have been unconfirmed reports that debris from the crash has spread over the vast Waddesdon Manor estate.
A spokesman for Waddesdon told getwestlondon that nobody had been injured at Waddesdon as a result of the crash which happened a mile-and-a-half from the estate.
Keep up to date with the latest news in west London via the free getwestlondon app.
You can set up your app to see all the latest news and events from your area, plus receive push notifications for breaking news.