A national anthem should reflect the status and mood of its country. It should project an image that is consistent both with the values of the country, and it’s position on the world stage. Here is the National Anthem of the UK.
Interestingly enough, God Save The Queen is only the UK National Anthem through custom and use. It is simply accepted that the lyrics will change to “God Save The King” when appropriate, so there’s absolutely no legal reason why these can’t be the lyrics now. I rest my case and eagerly await the court’s verdict
Listen to a longer version being sung here