| Country | Action | Action Date | Effective Date |
|---|
| All Territories under UK Sovereignty | Extension | 16/10/1899 | |
| British African Protectorates | Extension | 13/10/1910 | |
| Cameroons | Extension | 19/07/1934 | |
| Nauru | Extension | 19/07/1934 | |
| New Guinea | Extension | 19/07/1934 | |
| Palestine (inc. Trans-Jordan) | Extension | 19/07/1934 | |
| SAN MARINO | Signature | 16/10/1899 | |
| SAN MARINO | Ratification | 09/11/1899 | |
| South West Africa | Extension | 19/07/1934 | |
| Tanganyika | Extension | 19/07/1934 | |
| Togoland | Extension | 19/07/1934 | |
| UNITED KINGDOM | Signature | 16/10/1899 | |
| UNITED KINGDOM | Ratification | 28/11/1899 | |
| Western Samoa (UK) | Extension | 19/07/1934 | |