The Commonwealth of Nations' heads of government decided in 1948 to embark on a major change in the law of nationality throughout the Commonwealth. It was decided at the conference that the United Kingdom and the self-governing dominions would each adopt separate national citizenship, but retain the common imperial status of British subject. The British Nationality Act 1948 provided for a new status of Citizen of the United Kingdom and Colonies (CUKC), consisting of British subjects who had a close relationship (either through birth or descent) with the United Kingdom and its remaining colonies. The Act also provided that British subjects could be known by the alternative title Commonwealth citizen.