The title of the former political unity composed of: England, Wales, Scotland and Ireland, officially adopted on January 1 1802, when the act of union between Great Britain and Ireland came into force.

The name Great Britain has been used since the union of the Kingdoms of England and Scotland in 1707 as the official designation of the united countries.

When in 1922, 26 Irish countries were severed from the United Kingdom and sanded into a dominion of the British Empire under the name of the Irish Free State, no provision was made in the act of any change in the royal style or in the title of the imperial parliament. From 1922 onward, however, the title of United Kingdom of great Britain and northern Ireland was frequently used in official document to designate those part OF THE British isles represented in the imperial parliament, meeting at west minter.