I have to disagree with chaim on this one.
I am English and i would love to see the scots go. They just vote Labour in which contributes england to being this left wing place.
England would become slightly more right wing(relatively) if Scotland left.
Then England should declare independence from the UK. The UK was formed because the King of Scotland inherited the English Throne. You can say Scotland hijacked England. The Scottish kings made London their capital. The Left Wing Scottish politicians control the British Parliament. The Scottish would keep the Royal Family if they declared independence just like Canada and wouldn't be a Republic anyway. So you can send the Royal Family to Scotland. Then England can be a Righteous Gentile Republic like under Cromwell. Cromwell was a Puritan like the founders of New England.