If Scotland becomes independent will the Shetland Islands return to Norway?

The Statute of Limitations ran out on that deal a long time ago.

I think the Shetlands will always be a part of Scotland now.

Of course they will. After all the Shelties (or whatever they are called) have been studiously keeping up on their Norwegian.

True fact.~

What functional difference does it make if they’re part of only Scotland or a wider UK? The Scottish economy is pretty modern and sophisticated, and depends heavily on finance and R&D, so I’d be rather surprised if anyone saw a benefit to leaving the EU even if Scotland did leave the UK. As such, Shetland residents would probably get most of the benefits of being part of the UK by being in the EU.

Scotland is far from being Greece, and has too many advantages from being able to peddle its service/advanced manufacturing economy to the common market.

No, Glasgow will become independent from Scotland and turn into a free city.

Scotland will leave the United Kingdom at about the same time as Quebec leaves the Canadian confederation. There are just too many advantages belonging to a larger organization plus you have the added benefit of bitching about the government in London, or Ottawa and blaming them for everything that’s going wrong in your part of the world.