UK 24 August 2016 Scotland's huge deficit is an obstacle to independence The country's borrowing level (9.5 per cent) is now double that of the UK. Getty Images. Sign UpGet the New Statesman's Morning Call email. Sign-up Ever since Brexit, and indeed before it, the possibility of a second Scottish independence referendum has loomed. But today's public spending figures are one reason why the SNP will proceed with caution. They show that Scotland's deficit has risen to £14.8bn (9.5 per cent of GDP) even when a geographic share of North Sea revenue is included. That is more than double the UK's borrowing level, which last year fell from 5 per cent of GDP to 4 per cent. The "oil bonus" that nationalists once boasted of has become almost non-existent. North Sea revenue last year fell from £1.8bn to a mere £60m. Total public sector revenue was £400 per person lower than for the UK, while expenditure was £1,200 higher. Nicola Sturgeon pre-empted the figures by warning of the cost to the Scottish economy of Brexit (which her government estimated at between £1.7bn and £11.2.bn a year by 2030). But the country's black hole means the risks of independence remain immense. As a new state, Scotland would be forced to pay a premium on its debt, resulting in an even greater fiscal gap. Were it to use the pound without permission, with no independent central bank and no lender of last resort, borrowing costs would rise still further. To offset a Greek-style crisis, Scotland would be forced to impose considerable austerity. Nor would EU membership provide a panacea. Scotland would likely be forced to wait years to join owing to the scepticism of Spain and others facing their own secessionist movements. At present, two-thirds of the country's exports go to the UK, compared to just 15 per cent to other EU states. The SNP will only demand a second referendum when it is convinced it can win. At present, that is far from certain. Though support for independence rose following the Brexit vote, a recent YouGov survey last month gave the No side a four-point lead (45-40). Until the nationalists enjoy sustained poll leads (as they have never done before), the SNP will avoid rejoining battle. Today's figures are a considerable obstacle to doing so. › Ruin porn: the art world’s awkward obsession with abandoned Soviet architecture George Eaton is senior online editor of the New Statesman. Subscribe For daily analysis & more political coverage from Westminster and beyond subscribe for just £1 per month!