DaveBB, you're forgetting that the UK and its member nations are also part of the European Union. If Scotland had seceded from the UK they would undoubtedly still be an EU member. And the non-EU countries (like my own) in Europe are part of the EU common marked even if they're not part of the EU political union. The EU is an economic powerhouse that rivals your own great union.
Anyways... It's a moot point.