| Country | Action | Action Date | Effective Date |
|---|
| Aden Colony | Extension | 17/02/1950 | 17/02/1950 |
| Aden Protectorate | Extension | | 07/09/1950 |
| BAHAMAS | Extension | 12/06/1950 | 12/06/1950 |
| Barbados | Extension | 12/06/1950 | 12/06/1950 |
| British Guiana | Extension | 26/04/1950 | 26/04/1950 |
| British Honduras | Extension | 17/02/1950 | 17/02/1950 |
| Brunei | Extension | 17/02/1950 | 17/02/1950 |
| CYPRUS | Extension | 17/02/1950 | 17/02/1950 |
| Falkland Islands | Extension | 17/02/1950 | 17/02/1950 |
| FIJI | Extension | 26/04/1950 | 26/04/1950 |
| Gibraltar | Extension | 17/02/1950 | 17/02/1950 |
| Gold Coast | Extension | 17/02/1950 | 17/02/1950 |
| Hong Kong | Extension | 26/04/1950 | 26/04/1950 |
| JAMAICA | Extension | 12/06/1950 | 12/06/1950 |
| KENYA | Extension | 12/06/1950 | 12/06/1950 |
| Leeward Islands | Extension | 17/02/1950 | 17/02/1950 |
| Malaya | Extension | 26/04/1950 | 26/04/1950 |
| MALTA | Extension | 17/02/1950 | 17/02/1950 |
| MAURITIUS | Extension | 17/02/1950 | 17/02/1950 |
| NIGERIA | Extension | 26/04/1950 | 26/04/1950 |
| North Borneo | Extension | 26/04/1950 | 26/04/1950 |
| Northern Rhodesia | Extension | 17/02/1950 | 17/02/1950 |
| Nyasaland | Extension | 17/02/1950 | 17/02/1950 |
| Sarawak | Extension | 17/02/1950 | 17/02/1950 |
| SEYCHELLES | Extension | 17/02/1950 | 17/02/1950 |
| SINGAPORE | Extension | 26/04/1950 | 26/04/1950 |
| Southern Rhodesia | Extension | 17/02/1950 | 17/02/1950 |
| St Helena | Extension | 26/04/1950 | 26/04/1950 |
| The Gambia | Extension | 26/04/1950 | 26/04/1950 |
| UNITED KINGDOM | Extension | | 26/04/1950 |
| UNITED KINGDOM | Extension | | 17/02/1950 |
| UNITED KINGDOM | Signature | 03/01/1950 | |
| UNITED STATES OF AMERICA | | | |
| Zanzibar | Extension | 26/04/1950 | 26/04/1950 |