| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| Aden Colony | Extension | 28/06/1939 | 28/07/1939 |
| Antigua | Extension | 14/10/1931 | 14/11/1931 |
| AUSTRALIA | Accession | 03/10/1933 | 03/11/1933 |
| BAHAMAS | Extension | 14/10/1931 | 14/11/1931 |
| Barbados | Extension | 14/10/1931 | 14/11/1931 |
| Basutoland | Extension | 21/10/1931 | 21/11/1931 |
| Bechuanaland | Extension | 21/10/1931 | 21/11/1931 |
| Bermuda | Extension | 14/10/1931 | 14/11/1931 |
| British Guiana | Extension | 14/10/1931 | 14/11/1931 |
| British Solomon Islands | Extension | 24/12/1931 | 24/01/1932 |
| British Virgin Islands | Extension | 14/10/1931 | 14/11/1931 |
| CANADA | Accession | 01/07/1935 | 01/08/1935 |
| Cayman Islands | Extension | 14/10/1931 | 14/11/1931 |
| Ceylon | Extension | 14/10/1931 | 14/11/1931 |
| Channel Islands | Extension | 28/03/1935 | 28/04/1935 |
| CYPRUS | Extension | 14/10/1931 | 14/11/1931 |
| DOMINICA, COMMONWEALTH OF | Extension | 14/10/1931 | 14/11/1931 |
| Falkland Islands | Extension | 21/10/1931 | 21/11/1931 |
| FIJI | Extension | 14/10/1931 | 14/11/1931 |
| Gibraltar | Extension | 14/10/1931 | 14/11/1931 |
| Gilbert And Ellice Islands | Extension | 24/12/1931 | 24/01/1932 |
| Gold Coast | Extension | 14/10/1931 | 14/11/1931 |
| GRENADA | Extension | 14/10/1931 | 14/11/1931 |
| Hong Kong | Extension | 14/10/1931 | 14/11/1931 |
| Isle of Man | Extension | 28/03/1935 | 28/04/1935 |
| JAMAICA | Extension | 14/10/1931 | 14/11/1931 |
| KENYA | Extension | 14/10/1931 | 14/11/1931 |
| Leeward Islands | Extension | 14/10/1931 | 14/11/1931 |
| Malay States | Extension | 14/10/1931 | 14/11/1931 |
| MALTA | Extension | 14/10/1931 | 14/11/1931 |
| Malta | Extension | 14/10/1931 | 14/11/1931 |
| MAURITIUS | Extension | 09/12/1931 | 09/01/1932 |
| Montserrat | Extension | 14/10/1931 | 14/11/1931 |
| NAURU | Extension | 03/10/1933 | 03/11/1933 |
| New Guinea | Extension | 03/10/1933 | 03/11/1933 |
| NEW ZEALAND | Accession | 18/01/1932 | 18/02/1932 |
| Newfoundland (UK) | Accession | 19/09/1934 | 19/10/1934 |
| NIGERIA | Extension | 14/10/1931 | 14/11/1931 |
| Norfolk Island | Extension | 03/10/1933 | 03/11/1933 |
| North Borneo | Extension | 14/10/1931 | 14/11/1931 |
| Northern Ireland | Extension | 30/09/1931 | 30/10/1931 |
| Northern Rhodesia | Extension | 14/10/1931 | 14/11/1931 |
| NORWAY | Signature | 30/01/1931 | |
| Nyasaland | Extension | 14/10/1931 | 14/11/1931 |
| Palestine | Extension | 14/10/1931 | 14/11/1931 |
| Papua | Extension | 03/10/1933 | 03/11/1933 |
| Sarawak | Extension | 14/10/1931 | 14/11/1931 |
| Scotland | Extension | 30/09/1931 | 30/10/1931 |
| SEYCHELLES | Extension | 14/10/1931 | 14/11/1931 |
| SIERRA LEONE | Extension | 14/10/1931 | 14/11/1931 |
| Somaliland Protectorate | Extension | 14/10/1931 | 14/11/1931 |
| Southern Rhodesia | Accession | 12/04/1933 | 12/05/1933 |
| St Christopher, Nevis | Extension | 14/10/1931 | 14/11/1931 |
| St Helena And Ascension | Extension | 14/10/1931 | 14/11/1931 |
| St Lucia | Extension | 14/10/1931 | 14/11/1931 |
| St Vincent | Extension | 14/10/1931 | 14/11/1931 |
| Straits Settlements | Extension | 14/10/1931 | 14/11/1931 |
| SWAZILAND | Extension | 21/10/1931 | 21/11/1931 |
| Tanganyika | Extension | 14/10/1931 | 14/11/1931 |
| The Gambia | Extension | 14/10/1931 | 14/11/1931 |
| TONGA | Extension | 24/12/1931 | 24/01/1932 |
| TRINIDAD AND TOBAGO | Extension | 14/10/1931 | 14/11/1931 |
| Turks And Caicos Islands | Extension | 14/10/1931 | 14/11/1931 |
| UGANDA | Extension | 14/10/1931 | 14/11/1931 |
| UNITED KINGDOM | Signature | 30/01/1931 | |
| Windward Islands | Extension | 14/10/1931 | 14/11/1931 |
| Zanzibar | Extension | 14/10/1931 | 14/11/1931 |