and England, we advocate, has an English parliament." Arguments for English independence Economy There are questions over the currency of an independent England and whether it would use the Pound sterling. Uncertainty could be brought in the immediate aftermath of independence and the unlikelihood of the Bank of England accepting a currency union with an independent England. Advocates of English sovereignty claim that a sovereign England would enjoy one of the world's strongest economies, with an estimated GDP of US$2.865 trillion as of 2015, making it the world's 5th, 6th, or 7th largest economy depending on measurement. It is also claimed that England would be the 15th wealthiest nation in the world, with a GDP per capita of US$33,999 in 2015. The equivalent figures are $30,783 for Scotland, $23,397 for Wales, and $24,154 for Northern Ireland, or $27,659 for the UK minus England. Education Along with London, one of the leading major world cities and the world's second largest most historically significant financial centres, as its capital, England would continue to possess an enviable education system that includes some of the world's most prestigious universities, with the University of Oxford, the University of Cambridge and colleges of the University of London regularly featuring among the top 10 of the QS World University Rankings. Supporters of English independence Political parties The Green Party of England and Wales supports Welsh independence, the Scottish Greens support Scottish independence and Green Party Northern Ireland support Irish re-unification if the majority of people in Northern Ireland do so. English Democrats Mebyon Kernow supports Cornish devolution The Northern Independence Party supports Northern independence Opinion polls The English nationalist movement has its roots in a historical legacy which predates the United Kingdom. The rise in English identity in recent years, as evidenced by the increased display of the English flag (particularly during international sporting competitions and in relation to their football team), is sometimes attributed in the media to the increased devolution of political power to Scotland, Wales and Northern Ireland. One possible incentive for the establishment of self-governing English political institutions is the West Lothian question: the constitutional inconsistency whereby MPs from all four nations of the UK can vote on matters that solely affect England, while those same matters are reserved to the devolved assemblies of the other nations. (For example, the Scottish MP for West Lothian has a say on policing in the West