Rugby union is a popular sport in England, Wales, Scotland and Ireland. The game was arguably invented in 1823 by William Webb Ellis, and in 1871 the English Rugby Football Union was the first national rugby football union to be founded. It is organised separately in each of these countries, and also on an all-Ireland basis.
Rugby union in the British Isles is discussed in the following articles, corresponding to the separate organisations governing the sport:
And also to the Crown Dependencies: