Call their bluff, cut the ties and let them go. Walk away. They’re on their own. Including defense, NHS, pensions and infrastructure. And no loans to the new nation-state, either. Stoke their pipes with the hard realities of being ‘home alone’ with Lenin and see what happens. Sink or swim, commie rotters.
Scotland wants a certain number of ships and stuff through this separation. They have no infrastructure to support them though.
I'm not so keen on calling their bluff. I live on the borders in northern England and I dont want to see hordes of Scottish economic migrants flooding over the border when the grand socialist experiment collapses (as it inevitably will)