UPDATE: Vietnamese national who died in crash pictured.

Police who have been investigating a fatal mid-air crash between a helicopter and plane have today left the scene. 

The horror crash - which left four people dead - happened near Waddesdon Manor, just after midday on Friday.

The remnants of the aircraft have now been removed from the woodland in Upper Winchendon and the Air Accident Investigation Branch (AAIB) is continuing work on the investigation. 

Superintendent Rebecca Mears, said: "Our thoughts are very much with the families of those involved in the accident on Friday. Our family liaison officers continue to offer support the victim's families.

"I would like to reiterate my thanks to the Waddesdon estate for their support of police efforts and helping to coordinate the return of the area to a state of normality."