MICHAEL Moore last night demanded an end to the "damaging uncertainty" caused by a delay to the independence referendum after the Weir Group, one of Scotland's leading firms, expressed its concern at Alex Salmond's preferred autumn 2014 timescale.

The Scottish Secretary seized on remarks from Keith Cochrane, chief executive of the Glasgow-based FTSE-100 engineering group, which followed on from fears raised by SSE, the utility formerly known as Scottish and Southern Energy.

Mr Cochrane stressed certain questions had to be answered "as soon as possible", including those about the referendum process and the structure of an independent Scotland.

Last week, Perth-based SSE said the referendum "increased risk" which will be "taken into account in making final investment decisions".

Mr Moore said: "As yet another business raises questions about independence, it is clear that the referendum continues to cause damaging uncertainty."

John Swinney, the Scottish Finance Secretary, said he welcomed Mr Cochrane's remarks "in which he said politicians in both the Scottish and UK Governments require to answer questions and indicated support for Weir's headquarters remaining in Scotland".