Blossoming
Do Wales, Scotland and NI have ‘official’ national anthems? They each have their own football and rugby teams and I can’t imagine they all sing God save the current hereditary monarch.
The Welsh sing "Oh land of my Fathers beautiful in Welsh", and the Scots "The flowers of the Forrest". The Irish Rugby team consists of both north and south and they sing two lovely songs. If Northern Ireland is on their own as in boxing I think they sing or play"Danny Boy".