South African Colonisation Society (1902-1919) was established in a period when British society perceived to have a problem of 'surplus' single women in Britain and several emigration schemes to lessen this number came into existence. The South African Colonisation Society was the inheritor of the South African Expansion Scheme Committee established in 1899. Its purpose had been to act as a provisional subcommittee of the United British Women's Emigration Association, its task, to expand British colonising emigration to South Africa after the Boer War. This administrative framework continued until 1901 when it became a separate committee and by 1902 it had set up it own committees on education, work in counties, drawing room meetings and a shipping sub-committee. In 1903 it became an independent body functioning under the name of the South African Colonisation Society and continued as such until after the First World War. In the immediate post-war period, it helped co-ordinate female emigration as part of the Joint Council of Women's Emigration Societies. This was to be a central body which co-ordinated women's emigration after the war and liased with the government. Full merger of the South African Colonisation Society with the two other organisations did not occur until 1919, after government pressure was applied to centralise funding of the schemes and widen the scope of their activities. The amalgamation resulted in the creation of the Society for the Overseas Settlement of British Women.
The South African Colonisation Society (1902-1919), an offshoot of the United British Women's Emigration Association, was originally founded in 1899 as a South African Subcommittee when the United British Women's Emigration Association became very occupied with furthering emigration to the colonies there. From 1901 the committee was known as the South African Expansion Scheme Committee (SAX). By the end of 1902 the South African Colonisation Society had set up committees for education, work in counties, drawing-room meetings and a Shipping Subcommittee. During World War I there was very little emigration, and the South African Colonisation Society, Colonial Intelligence League and British Women's Emigration Association participated in a Joint Council of Women's Emigration Societies, all dissolving and amalgamating in 1919 as the Society for the Overseas Settlement of British Women.