Saint Helena, Ascension and Tristan da Cunha, a British Overseas Territory, does not have its own flag; however, the three administrative divisions do have their own flags:
Administrative divisions flags Saint Helena FlagDateUseDescription 2019–present Flag of Saint HelenaFlags of the World St Helena A British Blue Ensign with the Union Flag in the canton and the coat of arms in the fly
Ascension Island FlagDateUseDescription 2013–present Flag of Ascension Island A British Blue Ensign with the Union Flag in the canton and the coat of arms in the fly
Tristan da Cunha FlagDateUseDescription 2002–present Flag of Tristan da Cunha A British Blue Ensign with the Union Flag in the canton and the coat of arms in the fly
Governor's and Administrator's flags Saint Helena FlagDateUseDescription 2019–present Flag of the Governor A Union Flag defaced with the Island's coat of arms
Tristan da Cunha FlagDateUseDescription 2002–present Flag of the Administrator A Union Flag defaced with the Island's coat of arms
Historical Saint Helena FlagDateUseDescription 1874–1985 Flag of Saint Helena A British Blue Ensign with the Union Flag in the canton and the colonial seal in the fly 1874–1985 Flag of the Governor of Saint Helena A Union Flag defaced with the colonial seal 1985–2019 Flag of Saint HelenaFlags of the World St Helena A British Blue Ensign with the Union Flag in the canton and the coat of arms in the fly 1985–1999 Flag of the Governor of Saint Helena A Union Flag defaced with the Island's coat of arms
Ascension Island FlagDateUseDescription –2013 De facto flag of Ascension Island The Union Flag
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