| 5 July 1912 |
|
International Radiotelegraph Convention |
| 26 September 1927 |
25 July 1929 |
International Convention on the Execution of Foreign Arbitral Awards |
| 24 November 1954 |
1 January 1955 |
Exchange of Notes between the United Kingdom and Portugal on behalf of the Federation of Rhodesia, Nyasaland and Mozambique regarding Visa Abolition |
| 15 December 1956 |
18 September 1957 |
European Convention on the Equivalence of Periods of University Study |
| 17 January 1959 |
|
Exchange of Notes between the Government of the United Kingdom of Great Britain and Northern Ireland and the Government of Denmark extending to the Federation of Rhodesia and Tanganyika and Zanzibar the Convention of March 27, 1950, for the Avoidance of Fiscal Evasion with respect to Taxes on Income |