So who is this?
"A member of the Rothschild family said the collision missed her by five minutes.
The woman, who did not want her full name published, said she heard a loud bang while she was driving her car to a dog grooming event, near Waddesdon, in Buckinghamshire.
Just five minutes earlier she had been picking a plant in the Wilderness Woods, the scene of the crash site, on the Waddesdon Estate.
"I'm totally shocked," she said. "I heard a loud bang, which I thought was a car crash."
http://www.telegraph.co.uk/news/2017/11/17/aylesbury-mid-air-crash-fatalities-feared-afteraircraft-helicopter/