| 28 March 1889 |
1 July 1889 |
Convention between the Colony of the Cape of Good Hope and the Orange Free State for the establishment of a customs union |
| 24 April 1889 |
24 April 1889 |
Protocol between the Colony of the Cape of Good Hope and the Orange Free State respecting the Customs Union Convention of 28 March / 5 April 1889. |
| 5 July 1890 |
1 April 1891 |
International Union for the Publication of Customs Tariffs |
| 4 July 1891 |
1 July 1892 |
Final Protocol to the Universal Postal Convention, signed at Vienna, July 4, 1891. |
| 4 July 1891 |
1 July 1892 |
Universal Postal Convention concluded between Argentine Republic, Austria-Hungary, Belgium, Bolivia, Brazil, Bulgaria, Chile, Republic of Colombia, Congo Free State, Republic of Costa Rica, Denmark and Danish Colonies, Dominican Republic, Egypt, Equator, France and French Colonies, Germany and the German Protectorates, Great Britain and various British Colonies, British Colonies of Australasia, Canada, British India, Greece, Guatemala, Kingdom of Hawaii, Republic of Hayti, Republic of Honduras, CONTINUED... |
| 20 July 1898 |
|
Convention between the United Kingdom and Guatemala relative to Trade Marks |
| 2 March 1899 |
28 July 1900 |
Convention between the United Kingdom and the United States of America relative to the Disposal of Real and Personal Property |
| 26 April 1900 |
|
Convention between the United Kingdom and Japan for the Protection of the Estates of Deceased Persons |