I'm not sure what you mean there, regardless of where or how America gained its power, it is still the leading nation in terms of commercial, military, and religious influence. I'm sure you are aware that President Bush took a shit and started a war, in that order, without regard for the opinion or law of the entire world.
Also, America exists today because of the Tyranny of the goverments of Europe... If America had lost the war we would all be in the same boat, to deny that the world stage was forever changed by the emergence of America as a super power isn't really possible. Now America is going down the same road as every other empire that ever existed.
I'm sure you are aware that America has organized many different pacts with europe, during the war Bush was particularly active over there...
I'm not saying that Europe or the UK don't impact America, but it is pretty obvious where the power lies at the moment.
If you are saying that the existence of America hasn't impacted the freedoms of the UK thats cool, I'm not going to argue with you, but I disagree.