One really big problem is Labour basically sweeps the board in Scotland and Wales. The Tories actually have close to majority support in England. This situation could lead to the eventual breakup of the UK.
Plaid Cymru (Welsh Nationalists) are not Separatists.
The Scottish National Party are Separatists, but they only get between 30 and 40 percent of the vote max. Which means they cannot win a referendum on independence.
The SNP are a UK version of the Parti Quebecois, loud, obnoxious, socialists, who cannot deliver on the reason for their existence.
I don't know what Wales brings to the bargain but Scotland brings a *whole* lotta oil.