Essential building work at the historic Lews Castle in Stornoway is expected to stop following the collapse of a construction firm.

A number of small businesses have been badly hit by losses at Northern Ireland construction firm Patton Group, which went into administration.

The firm had a £2 million contract, funded by Western Isles Council, Historic Scotland and the Heritage Lottery Fund, to carry out a programme of repairs at the crumbling Victoria-era castle which is due to be turned into a hotel and cultural centre.

However, following the appointment of an administrator, Patton now owes its local partner, Neil Mackay & Co, the main contractor on the project, around £360,000.

Mr Mackay said the announcement of administration give some certainty at least to the long running concerns about the firm.

He now faces making half his workforce redundant with some 20 staff at risk of losing their jobs.

A meeting of sub-contractors and council representatives is due to be held tomorrow to discuss a way forward without Patton.

Western Isles Council needs to complete the £2m repair work to make the castle wind and weather tight before it can proceed on to its £9m overhaul.

Patton is one of the consortium firms – which includes Farrans and H&J Martin – which undertook the £70m building of six new Western Isles schools.