Old Britain File:National flag of Old Britain, the Union Jack.png Founded: Dissolved: Location: Affiliation: Capital: Head of State: Head of Government: Legislature: Judiciary: Major Species: Military: Intelligence Service: Language: Currency: File:Britain and Ireland.jpg Old Britain was a historical region of Earth also known as Great Britain and the UK (short for United Kingdom), and containing England and Scotland. The country played a significant role in Earth history. Residents of Britain were known as British, Britons, or Brits.