This should be the british anthem:
Hen Wlad Fy Nhadau" (Welsh pronunciation: [heːn wlɑːd və n̥adaɪ̯]) is the national anthem of Wales.[1] The title, taken from the first words of the song, means "Old Land of My Fathers" in Welsh, usually rendered in English as simply "Land of My Fathers". The words were written by Evan James and the tune composed by his son, James James, both residents of Pontypridd, Glamorgan, in January 1856.[1][2] The earliest written copy survives and is part of the collections of the National Library of Wales.[2]
James James
The Welsh national rugby team were playing host to the first touring New Zealand team, who to that point were unbeaten. After Wales won the Triple Crown in the 1905 Home Nations Championship the match was dubbed the 'Game of the Century' by the press. The New Zealand team started every match with the Haka, and Welsh Rugby Union administrator Tom Williams, suggested that Wales player Teddy Morgan lead the crowd in the singing of the anthem as a response. After Morgan began singing, the crowd joined in,[8] and Wales became the first nation to sing a national anthem at the start of a sporting event.[9]