SNP position.
My sketchy understanding is the SNP will expel Trident from the Faslane base as quickly as they can - no longer based there, meaning the submarine will seek a new base-Plymouth Devonport probably.
I can see Labour going this as its a headline solution-keeps the SNP on their side of the house division, and keeps us (the remainder of the UK) with a nuclear weapon system for a little bit of time. But yes of course England will have no real support facility at Devonport because that is in Scotland. USA to the rescue here, in that capacity, for a time? Beyond that general UK disintegration will somehow occur, bit by bit. Thatcherism from beyond the grave..she must be laughing. She hated the Scots, among many other things (football, railways, trades unions). No way SNP will sanction increased defence spending, I think and guess their vision is for a much more Scando style future for the nation. Its just chickens coming home to roost.