The Prime Minister has paid tribute to Lord Ballyedmond, who died in a helicopter crash in Norfolk.
David Cameron said: “Lord Ballyedmond was a towering figure in Northern Irish business life, and passionate about peace and good relations north and south, east and west.
"He was a larger than life figure who was a great supporter of the Conservative party and a good friend to me.”
It's not known how long air accident investigators will need to study the scene of the crash.
But questions will need to be answered into why the helicopter came down at Gillingham.
ITV News Anglia's Jim Rice has been looking at the safety of helicopters after the second crash in Norfolk this year.
Click below to watch his report.
Lord Ballyedmond was 70-years old and one of the richest men in Northern Ireland. He leaves behind a wife and three children.
ITV News Anglia's Natalie Gray looks at his life and his legacy. Click below to watch her report.
Tonight the bodies of the four men who died in last night's helicopter crash, have been removed from the wreckage.
ITV News Anglia's Malcolm Robertson has spent the day at the crash site and has sent this report on the events of last night and today. Click below to watch his report
Suffolk Police have now stood down their involvement in the crash scene and the investigation is now in the hand of air accident investigation teams.
The sensitive task of removing the bodies of the four men who died in the helicopter crash at Gillingham in Norfolk, has begun.
The helicopter came down last night on its way from Gillingham Hall to Northern Ireland.
The owner of the Hall, Lord Ballyedmond, died in the crash along with three colleagues.
ITV News Anglia's Tanya Mercer has been at the scene of the crash all day for us and sent this report.
The Irish peer Lord Ballyedmond who died in last night's helicopter crash at Gillingham was the founding Chairman and CEO of Norbrook Pharmaceuticals.
They released this statement
It is with sincere sadness and deep regret that the Company confirms our founding Chairman and CEO, Lord Ballyedmond, was one of four people who tragically lost their lives. Norbrook management and staff also mourn the loss of their friends and colleagues Declan Small, Captain Carl Dickerson and Captain Lee Hoyle. Our thoughts are with the immediate families and friends..... We take enormous pride in our Chairman's extraordinary legacy in establishing us as a global veterinary and pharmaceutical industry leader.
Lord Ballyedmond's helicopter crashed in a field at Gillingham, Norfolk last night.
Suffolk Police say it was on its way from Gillingham Hall to Northern Ireland when the crashed happened.
This afternoon the other three men who died in the crash have been named as 42-year old Declan Small from Co Down.
The two pilots have been named as Carl Dickerson and Lee Hoyle who worked for Lord Ballyedmond's airport operator Haughey Air Limited.
The pilot and co-pilot who died with the millionaire peer Lord Ballyedmond when his helicopter crashed last night, have been named as Carl Dickerson and Lee Hoyle.
Foreman 42-year old Declan Small from Co Down, was also on board the helicopter.
Mr Dickerson and Mr Hoyle were employed by the peer's airport operator Haughey Air Limited.
Suffolk Police say the helicopter took off from Gillingham Hall and was heading towards Ireland.
Lee Naseby who lives in nearby Beccles, filmed Lord Ballyedmond's helicopter taking off from Gillingham Hall a week ago.
Click above to see the footage taken on his mobile phone
Air accident investigators have begun to work to find a cause of last night's helicopter crash which killed four men.
The helicopter came down in a field near Gillingham on the Norfolk and Suffolk border near Beccles.
Click below to watch this report sent from the scene by ITV News Anglia's Malcolm Robertson.
Air accident investigators have begun work to find out how a helicopter crashed close to the Norfolk and Suffolk border last night.Read the full story ›