Scottish independence might be a faster route out of the EU than a referendum.  Before 2012 the SNP argued that Independence could be achieved and Scotland remain within the EU while retaining all UK opt outs with a minimal amount of trouble. However this position has since changed largely due to European commission pronouncements on the issue. [1] There is no EU precedent to the situation that Scottish independence would bring about. It has been argued that Scotland would not automatically remain part of the EU and would have to reapply. Commission President Jose Manuel Barroso has said [quote=Barroso] For the European Union’s purposes, from a legal point of view, it is certainly a new state. If a country becomes independent it is a new state and then it has to negotiate into the European Union [2] [/quote] Certainly if Scotland's application to join the EU were a normal one then the 18 month timetable between referendum to independence would not give enough time to go through the process of joining the EU. Some applications have taken over a decade, the UK's own (second) application took over 5 years. The fastest application was Finland which only took 2 years 10 months between application and accession. [3] Even seemingly very minor disputes can hold up membership for long periods, a Croatia-Slovenia dispute over maritime access considerably delayed the accession of the former. Thus small disputes like with Spain over fishing rights or with Ireland over Rockall could be a considerable drag on Scotland's application. [4] None of the above are insurmountable problems and would only impose a temporary exit of Scotland from the EU. However, it is possible that Scotland will be unable to rejoin. It ought to be remembered that enlargement requires unanimous support of the current member states, which may not be forthcoming. A number of other states such as Belgium and Italy have regions with national aspirations, the most likely European opponent to Scottish independence would be Spain with its eastern region of Catalonia's independence movement often being compared to Scotland's. As a result there have been persistent rumours that Spain might veto Scottish re-entry into the EU in order to send a message to its own separatists. [5] Spain’s Prime Minister Rajoy was plain when he said [quote=Rajoy] It's very clear to me… a country that would obtain independence from the EU would remain out of the EU. [6] [/quote]  [1] Carrell, Severin, ‘Barroso casts doubt on independent Scotland’s EU membership rights’, The Guardian, 12 September 2012,  McSmith, Andy, ‘The impact of that Barroso letter’, The Independent, 20 December 2012,   [2] Davidson, Ruth, ‘Separate Scotland would have to reapply to EU – Barroso’, Scottish Conservatives, 10 December 2012,  [BBC Hardtalk transcript]  [3] Wikipedia, ‘Enlargement of the European Union’, accessed 4 November 2013,   [4] Open Europe Blog, ‘Scottish independence and EU accession: tricky to pull off in one manoeuvre?’, 5 February 2013,   [5] York, Christopher, ‘Scottish Independence: Spain Could Veto EU Membership’, The Huffington Post, 6 December 2012,   Peterkin, Tom, ‘Scottish Independence: Spain key to Scotland’s EU hopes’, The Scotsman, 4 November 2012,   [6] Carrell, Severin, and Kassam, Ashifa, ‘Scottish independence: Spain blocks Alex Salmond’s hopes for EU transition’, The Guardian, 27 November 2013,