Republic of South Africa (Temporary Provisions) Act 1961
WHEREAS on the thirty-first day of May, nineteen hundred and sixty-one, the Union of South Africa will become a Republic under the name of the Republic of South Africa, and cease to be a member of the Commonwealth: Be it therefore enacted by the Queen's most Excellent Majesty, by and with the advice and consent of the Lords Spiritual and Temporal, and Commons, in this present Parliament assembled, and by the authority of the same, as follows:—