The High Commissioner of South Africa to the United Kingdom is an officer of the South African Department of International Relations and Cooperation and the head of the High Commission of the Republic of South Africa to the United Kingdom in London. The position has the rank and status of an Ambassador Extraordinary and Plenipotentiary and also serves as South Africa's Permanent Representative to the International Maritime Organization (since 1959), a Trustee of the Imperial War Museum and South Africa's Commonwealth War Graves Commissioner.