Currency devaluation, foreign investment flooding out the country ect. I'm sure you've read the news reports and company statements during the last referendum, right?
I read plenty of reports about various aspects of the Scots leaving but really ? The UK government would devalue the pound because Scotland left ? Give over !!! As for foreign investment flooding out of England, Wales etc - utter rubbish. The Scottish government spend considerably more than they raise - they are subsidised from central funds. Why would that make foreign investment within England go elsewhere if Scotland vote to leave the UK ?