Norbrook Pharmaceuticals have released a statement following the death of the company's chairman, Lord Ballyedmond, in the helicopter crash at Gillingham.

The statement reads:

'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 in an aviation accident at Gillingham, Norfolk at approximately 7.30pm on Thursday 13 March 2014.

Norbrook management and staff also mourn the loss of their friends and colleagues Declan Small (Site Foreman), Captain Carl Dickerson (Pilot) and Captain Lee Hoyle (Pilot).

Our thoughts are with the immediate families and friends of the deceased who have requested privacy at this difficult time.

We take enormous pride in our Chairman's extraordinary legacy in establishing Norbrook as a global veterinary and pharmaceutical industry leader. Management will continue to advance his pioneering vision with a renewed vigor and determination befitting his memory.'