I think the National Anthem should be instrumental, emotive, instantly recognised & so beloved of the people that it stirs joy into the hearts on account of its quintessential Englishness. To this end I suggest Ron Grainer's venerable Old Ned, better known, of course, as the theme from Steptoe & Son.

Otherwise, as the good old anarchist slogan had it: I will not stand for the National Anthem.

For the benefit of our American viewers:

http://www.youtube.com/watch?v=I7ly_tp-9SY