The UK predominantly makes much of its money from the banking sector. That's why we have the Caiman Islands and the British Virign Islands - we are a giant money-laundering tax-haven.
Sturgeon's pulling the Scots into Progressivism may not be the direction the party needs - but they don't really know what they need at the moment. I wrote about it before the news broke about her husband's financial infidelity. https://medium.com/lucid-nightmare/nicola-sturgeon-courting-populism-and-the-trans-rape-prison-fiasco-2af13254adcb