It's a possibility IMHO. The cost of recreating the Faslane complex is going to be massive and where would you put it? Somewhere in the SW I'd guess but you'll spend the next 10 years in the courts fighting the greens and the second-home brigade.
You could cut a deal with Scotland to keep the current force operating until it runs out of time - say 2025 - but beyond that the cost implications are huge if you have to rebase as well as build a new fleet if teh nationalists stick to their No Nukes Campaign.
I'd like to see some thoughts on what the Scottish Armed Forces would look like - something akin to Denmark I'd guess??