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This is alist of islands of the United Kingdom. TheUnited Kingdom of Great Britain and Northern Ireland has thousands of islands within its territory and several external territories. This is a list of selectedBritish islands grouped byconstituent country oroverseas territory. The largest British island isGreat Britain, which forms a substantial majority of the United Kingdom and is theninth-largest island in the world.

Northern Ireland is a part of the island ofIreland, see;list of islands of Ireland andlist of inland islands of Ireland.


Much of theBritish Antarctic Territory is also included in theoverlapping claims ofChile andArgentina. None of these claims have gained wide international recognition (only the British claim gained any), and all is suspended. All are regulated by theAntarctic Treaty.
TheFalkland Islands are also claimed byArgentina, see:Falkland Islands sovereignty dispute.
St Helena, Ascension and Tristan da Cunha have formed theBritish Overseas Territory ofSaint Helena, Ascension and Tristan da Cunha since 2009.[1]
South Georgia and the South Sandwich Islands are also claimed by Argentina. SeeFalkland Islands sovereignty dispute.
TheCrown dependencies are part of the United Kingdom. For details of islands within their territories, see: