Joining the EU could be problematic, given the Catalan thing.

I don't think it would remain a problem if Scotland formally seceded.

Spain might veto Scotland joining, because otherwise it might lend encouragement and legitimacy to Catalan separatism. Or so goes the theory.

Thing is, back in 2014 that was indeed a small risk if Scotland became independent. These days however, Scotland will be leaving the EU and independence does at least give a chance that it could re-join again.

Personally, I voted against independence in 2014 as I felt Scotland was stronger as part of a bigger group of countries. Ironically for this reason, I'd now vote in favour if there was another referendum. The UK will unfortunately wither and decline - especially with Boris and his chums sucking the country dry. I'd now rather Scotland got out, applied for EU membership again and left the rest of the UK to their fate.

And I say this quite sadly, what with having family and friends in England, plus being an Englishman myself...