Northern Department 1660–1782 Secretaries — Undersecretaries
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Southern Department 1660–1768 Secretaries — Undersecretaries
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Southern Department 1768–1782 Secretaries — Undersecretaries 1782: diplomatic responsibilities transferred to new Foreign Office
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Colonial Office 1768–1782 Secretaries — Undersecretaries
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Foreign Office 1782–1968 Secretaries — Ministers — Undersecretaries
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Home Office 1782–1794 Secretaries — Undersecretaries
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War Office 1794–1801 Secretaries — Undersecretaries
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War and Colonial Office 1801–1854 Secretaries — Undersecretaries
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Colonial Office 1854–1925 Secretaries — Undersecretaries
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India Office 1858–1937 Secretaries — Undersecretaries
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Colonial Office 1925–1966 Secretaries — Ministers — Undersecretaries
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Dominions Office 1925–1947 Secretaries — Undersecretaries
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India Office and Burma Office 1937–1947 Secretaries — Undersecretaries
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Commonwealth Relations Office 1947–1966 Secretaries — Ministers — Undersecretaries
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Commonwealth Office 1966–1968 Secretaries — Ministers — Undersecretaries
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Foreign and Commonwealth Office 1968–2020 Secretaries — Ministers — Undersecretaries
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Foreign, Commonwealth and Development Office Since 2020 Secretaries — Ministers — Undersecretaries
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