| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| Aden Colony | Extension | 01/08/1939 | 01/08/1939 |
| AUSTRALIA | Accession | 07/10/1937 | 07/10/1937 |
| BAHAMAS | Extension | 26/03/1938 | 26/03/1938 |
| Barbados | Extension | 26/03/1938 | 26/03/1938 |
| Basutoland | Extension | 08/01/1939 | 08/01/1939 |
| Bechuanaland | Extension | 08/01/1939 | 08/01/1939 |
| Bermuda | Extension | 26/03/1938 | 26/03/1938 |
| British Guiana | Extension | 26/03/1938 | 26/03/1938 |
| British Honduras | Extension | 26/03/1938 | 26/03/1938 |
| British Solomon Islands | Extension | 26/03/1938 | 26/03/1938 |
| CANADA | Accession | 01/07/1938 | 01/07/1938 |
| Cayman Islands | Extension | 26/03/1938 | 26/03/1938 |
| Ceylon | Extension | 26/03/1938 | 26/03/1938 |
| CYPRUS | Extension | 26/03/1938 | 26/03/1938 |
| Falkland Island Dependencies | Extension | 26/03/1938 | 26/03/1938 |
| Falkland Islands | Extension | 26/03/1938 | 26/03/1938 |
| FIJI | Extension | 26/03/1938 | 26/03/1938 |
| Gibraltar | Extension | 26/03/1938 | 26/03/1938 |
| Gilbert And Ellice Islands | Extension | 26/03/1938 | 26/03/1938 |
| Gold Coast | Extension | 26/03/1938 | 26/03/1938 |
| Hong Kong | Extension | 26/03/1938 | 26/03/1938 |
| IRAQ | |||
| Isle of Man | Extension | 28/12/1983 | 28/01/1984 |
| JAMAICA | Extension | 26/03/1938 | 26/03/1938 |
| KENYA | Extension | 26/03/1938 | 26/03/1938 |
| Leeward Islands | Extension | 26/03/1938 | 26/03/1938 |
| Malay States | Extension | 26/03/1938 | 26/03/1938 |
| MALTA | Extension | 26/03/1938 | 26/03/1938 |
| MAURITIUS | Extension | 26/03/1938 | 26/03/1938 |
| NAURU | Extension | 07/10/1937 | 07/10/1937 |
| New Guinea | Extension | 07/10/1937 | 07/10/1937 |
| NEW ZEALAND | Accession | 24/08/1937 | 24/08/1937 |
| Newfoundland (UK) | Accession | 08/01/1939 | 08/01/1939 |
| NIGERIA | Extension | 26/03/1938 | 26/03/1938 |
| Norfolk Island | Extension | 07/10/1937 | 07/10/1937 |
| North Borneo | Extension | 26/03/1938 | 26/03/1938 |
| Northern Ireland | Extension | 24/10/1983 | 24/11/1983 |
| Northern Rhodesia | Extension | 26/03/1938 | 26/03/1938 |
| Nyasaland | Extension | 26/03/1938 | 26/03/1938 |
| Palestine | Extension | 26/03/1938 | 26/03/1938 |
| Papua | Extension | 07/10/1937 | 07/10/1937 |
| Sarawak | Extension | 26/03/1938 | 26/03/1938 |
| Scotland | Extension | 03/03/1937 | 01/01/1900 |
| SEYCHELLES | Extension | 26/03/1938 | 26/03/1938 |
| SIERRA LEONE | Extension | 26/03/1938 | 26/03/1938 |
| Somaliland Protectorate | Extension | 26/03/1938 | 26/03/1938 |
| Southern Rhodesia | Accession | 02/06/1937 | 02/06/1937 |
| Sovereign Base Areas | Extension | 07/02/1962 | |
| St Helena And Ascension | Extension | 26/03/1938 | 26/03/1938 |
| Straits Settlements | Extension | 26/03/1938 | 26/03/1938 |
| SWAZILAND | Extension | 08/01/1939 | 08/01/1939 |
| Tanganyika | Extension | 26/03/1938 | 26/03/1938 |
| The Gambia | Extension | 26/03/1938 | 26/03/1938 |
| TONGA | Extension | 26/03/1938 | 26/03/1938 |
| TRANSJORDAN | Extension | 26/03/1938 | 26/03/1938 |
| TRINIDAD AND TOBAGO | Extension | 26/03/1938 | 26/03/1938 |
| Turks And Caicos Islands | Extension | 26/03/1938 | 26/03/1938 |
| UGANDA | Extension | 26/03/1938 | 26/03/1938 |
| UNITED KINGDOM | Signature | 25/07/1935 | |
| Windward Islands | Extension | 26/03/1938 | 26/03/1938 |
| Zanzibar | Extension | 26/03/1938 | 26/03/1938 |