| Country | Action | Action Date | Effective Date |
|---|
| All Territories under UK Sovereignty | Extension | 24/11/1880 | |
| British African Protectorates | Extension | 11/03/1910 | 11/03/1910 |
| Cameroons | Extension | 28/01/1928 | |
| LUXEMBOURG | Ratification | 29/12/1880 | |
| Nauru | Extension | 28/01/1928 | |
| New Guinea | Extension | 28/01/1928 | |
| Palestine, Mandated Territories (exc. Trans-Jordan) | Extension | 28/01/1928 | |
| South West Africa | Extension | 28/01/1928 | |
| Tanganyika | Extension | 28/01/1928 | |
| Togoland | Extension | 28/01/1928 | |
| Transjordan | Extension | 29/01/1932 | |
| UNITED KINGDOM | Ratification | 18/12/1880 | |
| Western Samoa (UK) | | | |