Prime Minister David Cameron said: "This is a massive vote of confidence in our long-term economic plan.
"This investment is going to create lots of new jobs and opportunities, meaning more financial security and peace of mind for families and a more resilient economy for our country."
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ITV Border Political Editor Peter MacMahon says it's far too early to call this referendum.
A World War Two veteran has told ITV News he has fulfilled a boyhood dream by voting for an independent Scotland.
Speaking as a Scot - not the ITV News Scotland Correspondent - I am feeling a great anxiety about what lies ahead.