Any reason for that? Or just you don't like change?
Well they would be entitled to their fair share of the North Sea oil, and with a population of only 5 million the money would go very far. They could use this money to increase education while developing social projects and their infrastructure to be a more independent nation without relying on the English economy for their economic prosperity. They already have free university level education for their students, and so in 20 - 30 years they could have a highly skilled workforce which can generate a large GDP per capita and use taxes to pay for all the services you'd expect in a fair society.
Not a fan of reality then?