| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| Australia | Extension | 27/11/1930 | |
| Bechuanaland | Extension | 27/11/1930 | |
| British Togoland | Extension | 27/11/1930 | |
| Gold Coast | Extension | 27/11/1930 | |
| Kenya | Extension | 27/11/1930 | |
| Malay States, Federated | Extension | 30/11/1934 | |
| Malay States, Unfederated | Extension | 30/11/1934 | |
| MONACO | Signature | 27/03/1930 | 05/07/1931 |
| New Zealand | Extension | 27/11/1930 | |
| Nigeria | Extension | 27/11/1930 | |
| Northern Rhodesia | Extension | 27/11/1930 | |
| Nyasaland | Extension | 27/11/1930 | |
| Palestine | Extension | 27/11/1930 | |
| Sierra Leone | Extension | 27/11/1930 | |
| Solomon Islands Protectorate | Extension | 27/11/1930 | |
| Somaliland | Extension | 27/11/1930 | |
| South Africa | Extension | 27/11/1930 | |
| South West Africa | Extension | 27/11/1930 | |
| Swaziland | Extension | 27/11/1930 | |
| Tanganyika | Extension | 27/11/1930 | |
| The Gambia | Extension | 27/11/1930 | |
| Uganda | Extension | 27/11/1930 | |
| UNITED KINGDOM | Signature | 27/03/1930 | |
| UNITED KINGDOM | Ratification | 23/04/1931 | |
| Zanzibar | Extension | 27/11/1930 |