MJN Colston, the teeside building services firm, has gone into administration with the loss of 146 jobs and another 420 at risk. The business has offices in Gateshead, Blackburn, Coventry, Bury St Edmunds, Croydon, Bristol, Bridgend and Exeter.
The firm had been involved in mechanical and electrical contracting in some high profile public and private projects such as the redevelopment of RAF Northolt and Paddington Station.
In a statement, joint administrators Daniel Butters and Matt Cowlishaw, said: "We intend to trade the business in the short-term with a view to selling and novating the contracts to other providers.
It is not clear at the moment what has precipitated this collapse. However a number of building companies have found themselves in difficulty as some of the major public projects have been put on hold.