Nearly 90 jobs have been lost at Blackbourne Integrated M&E after bosses confirmed they had closed after 61 years of business.
The firm was established in 1958, which was founded by Cedric Blackbourne.
On Tuesday, a spokesman for the Antrim based mechanical and engineering firm has blamed what has been described "extremely difficult" trading conditions in recent years.
It has now entered into a company voluntary arrangement to pay off its debts with all 86 staff being made redundant. It stopped trading this month and has appointed business advisers Baker Tilly Mooney Moore.
In a statement they said: