There are a number of names used to describe the United Kingdom. Its legal name is United Kingdom of Great Britain and Northern Ireland, however there are some other names used. Legal name The legal name is United Kingdom of Great Britain and Northern Ireland. The name dates from 1927, six years after the Irish Free State left the union it is said because it contains Great Britain and Northern Ireland around the world. This is the name that most people use and it is its official name. Un-official names A lot of un-official names are used. Great Britain/Britain In reference to the island containing Scotland, England, and Wales, it is used to describe things such as British citizens and the British Olympic Association. It is controversial because it excludes Northern Ireland. England England is one of the four countries that make up the union. This name is used by American people and American news organizations. It is disliked by the rest of the UK because it doesn't include anything about them.