British's the adjective and demonym associated with Great Britain and the United Kingdom. It may refer to: People British people, or Britons, the people of Britain. Britons (historical), ancient inhabitants of the southern portion of the island of Great Britain. British nationality law, which governs the citizens of the United Kingdom or British Crown dependencies. Language British English, the forms of the English language used in the United Kingdom. British language (Celtic), also known… (More on British)