The Commonwealth Office had been created only in 1966, by the merger of the Commonwealth Relations Office and the Colonial Office, the Commonwealth Relations Office having been formed by the merger of the Dominions Office and the India Office in 1947—with the Dominions Office having been split from the Colonial Office in 1925.
Kantor Persemakmuran baru dibentuk pada 1966, dari penggabungan Kantor Hubungan Persemakmuran dengan Kantor Kolonial, dan Kantor Hubungan Persemakmuran dibentuk melalui penggabungan Kantor Dominion dan Kantor Urusan India pada 1947—sementara Kantor Dominion dipisahkan dari Kantor Kolonial pada 1925.