High Commissioner for Southern Africa

The British office of high commissioner for Southern Africa was responsible for governing British possessions in Southern Africa, latterly the protectorates of Basutoland (now Lesotho), the Bechuanaland Protectorate (now Botswana) and Swaziland (now Eswatini), as well as for relations with autonomous governments in the area. The office was combined with that of Governor of Cape Colony from 1847 to 1901, with that of the governor of Transvaal Colony 1901 to 1910, and with that of Governor-General of South Africa from 1910 to 1931.

Source: Wikipedia — High Commissioner for Southern Africa (CC BY-SA 4.0)