Seriously, I get the idea of a national anthem, and think they are generally. good idea, but the British one isn't about the nation, it's about perpetuating the idea of hereditary privilege, and 'keeping us all in our place'.
I suggest an instrumental is the way forward on this - none of those pesky forelock-tugging or jingoistic words to get in the way of a good melody.
Can we have something with a bit more life in it though, 3/2 is a rubbish time signature.