| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| Aden Colony | Extension | 21/06/1939 | 21/07/1939 |
| Anguilla | Extension | 25/06/1937 | |
| AUSTRALIA | Accession | 20/07/1937 | 20/08/1937 |
| BAHAMAS | Extension | 25/06/1937 | 25/07/1937 |
| Barbados | Extension | 25/06/1937 | 25/07/1937 |
| Basutoland | Extension | 26/10/1937 | 26/11/1937 |
| Bechuanaland | Extension | 26/10/1937 | 26/11/1937 |
| Bermuda | Extension | 25/06/1937 | 25/07/1937 |
| British Guiana | Extension | 25/06/1937 | 25/07/1937 |
| British Honduras | Extension | 25/06/1937 | 25/07/1937 |
| British Solomon Islands | Extension | 25/06/1937 | 25/07/1937 |
| CANADA | Accession | 01/03/1939 | 01/04/1939 |
| Cayman Islands | Extension | 25/06/1937 | 25/07/1937 |
| Ceylon | Extension | 25/06/1937 | 25/07/1937 |
| CYPRUS | Extension | 25/06/1937 | 25/07/1937 |
| Falkland Islands | Extension | 25/06/1937 | 25/07/1937 |
| FIJI | Extension | 25/06/1937 | 25/07/1937 |
| Gibraltar | Extension | 25/07/1937 | 15/07/1937 |
| Gilbert And Ellice Islands | Extension | 25/06/1937 | 25/07/1937 |
| Gold Coast | Extension | 25/06/1937 | 25/07/1937 |
| Hong Kong | Extension | 25/06/1937 | 25/07/1937 |
| HUNGARY | Signature | 25/09/1935 | 07/06/1936 |
| Isle of Man | Extension | 20/12/1983 | 20/01/1984 |
| JAMAICA | Extension | 25/06/1937 | 25/07/1937 |
| KENYA | Extension | 25/06/1937 | 25/07/1937 |
| Leeward Islands | Extension | 25/06/1937 | 25/07/1937 |
| Malay States | Extension | 25/06/1937 | 25/07/1937 |
| MALTA | Extension | 25/06/1937 | 25/07/1937 |
| MAURITIUS | Extension | 25/06/1937 | 25/07/1937 |
| NAURU | Extension | 20/07/1937 | 20/08/1937 |
| New Guinea | Extension | 20/07/1937 | 20/08/1937 |
| NEW ZEALAND | Accession | 05/10/1936 | 05/11/1936 |
| Newfoundland (UK) | Accession | 17/11/1936 | 17/12/1936 |
| NIGERIA | Extension | 25/06/1937 | 25/07/1937 |
| Norfolk Island | Extension | 20/07/1937 | 20/08/1937 |
| North Borneo | Extension | 25/06/1937 | 25/07/1937 |
| Northern Ireland | Extension | 15/11/1983 | 15/12/1983 |
| Northern Rhodesia | Extension | 25/06/1937 | 25/07/1937 |
| Nyasaland | Extension | 25/06/1937 | 25/07/1937 |
| Palestine | Extension | 25/06/1937 | 25/07/1937 |
| Papua | Extension | 20/07/1937 | 20/08/1937 |
| Sarawak | Extension | 25/06/1937 | 25/07/1937 |
| Scotland | Extension | 01/07/1936 | 01/08/1936 |
| SEYCHELLES | Extension | 25/06/1937 | 25/07/1937 |
| SIERRA LEONE | Extension | 25/06/1937 | 25/07/1937 |
| Somaliland Protectorate | Extension | 25/06/1937 | 25/07/1937 |
| Southern Rhodesia | Extension | 23/09/1936 | 23/10/1936 |
| St Helena And Ascension | Extension | 25/06/1937 | 25/07/1937 |
| Straits Settlements | Extension | 25/06/1937 | 25/07/1937 |
| SWAZILAND | Extension | 26/10/1937 | 26/11/1937 |
| Tanganyika | Extension | 25/06/1937 | 25/07/1937 |
| The Gambia | Extension | 25/06/1937 | 25/07/1937 |
| TONGA | Extension | 25/06/1937 | 25/07/1937 |
| TRANSJORDAN | Extension | 25/06/1937 | 25/07/1937 |
| TRINIDAD AND TOBAGO | Extension | 25/06/1937 | 25/07/1937 |
| Turks And Caicos Islands | Extension | 25/06/1937 | 25/07/1937 |
| UGANDA | Extension | 25/06/1937 | 25/07/1937 |
| UNITED KINGDOM | Signature | 25/09/1935 | |
| Windward Islands | Extension | 25/06/1937 | 25/07/1937 |
| Zanzibar | Extension | 25/06/1937 | 25/07/1937 |