Is there a serious threat to the unity of the UK?

Successful arguments would include the following structure and details: How close the Scottish referendum was, whether a second one is imminent, satisfaction with current level of devolution, lack of real change to Westminster model, legitimacy question of Scotland being ruled by a party they unanimously rejected, West Lothian question, EVEL, difference in voting patterns on EU referendum, the fact that the SNP enjoy a hegemony of Scottish electoral support. Counter arguments include: The strength of the conservatives in Wales, satisfaction with devolution in Ireland and Wales, current low polling support for independence in Scotland, the fact that Scotland would not be able to rejoin the EU as an independent country, the level of economic support the other nations receive from England. A successful conclusion would involve thoughtfully weighing up both sides of the argument and explaining a nuanced judgement, perhaps with some analysis of the current UK Zeitgeist.