Sure the London and NY stock market are probably the most important in the world but it doesn't necessarily translate in political influence. The fact of the matter is that Britain now has little influence in world politics and is seen mostly as a US follower and it's only going to go down which is why some are grasping at the nuclear toys to create the illusion that it's still dominant.
I would have expected one of you to at least point out that the UK has one of only 5 permanent seat at the UN security council thanks to its legacy as a former world power but the again France also has one so...
Does anyone here that doesn't think that the game is really between two players? China and the US with a good dose of Russia, sprinkle of Japan and a dash of Germany, France and the UK.
I'll stop thinking about national boundary when they don't matter. The UK can't even let go of their Pounds(yet another example of misplaced pride) to join the rest of Europe. There may be economic alliances happening and money flows more freely against the globe but countries and even ethnicities are still pretty very protective of their history and heritage and it isn't about to change.