| Country | Action | Action Date | Effective Date |
|---|
| Aden Colony | Extension | 28/06/1951 | 28/06/1951 |
| AUSTRIA | | | |
| BAHAMAS | Extension | 28/06/1951 | 28/06/1951 |
| Barbados | Extension | 28/06/1951 | 28/06/1951 |
| Basutoland | Extension | 28/06/1951 | 28/06/1951 |
| Bechuanaland | Extension | 28/06/1951 | 28/06/1951 |
| Bermuda | Extension | 28/06/1951 | 28/06/1951 |
| British Guiana | Extension | 28/06/1951 | 28/06/1951 |
| British Honduras | Extension | 28/06/1951 | 28/06/1951 |
| British Solomon Islands | Extension | 28/06/1951 | 28/06/1961 |
| Brunei | Extension | 28/06/1951 | 28/06/1951 |
| CYPRUS | Extension | 28/06/1951 | 28/06/1951 |
| Falkland Island Dependencies | Extension | 28/06/1951 | 28/06/1951 |
| Falkland Islands | Extension | 28/06/1951 | 28/06/1951 |
| FIJI | Extension | 28/06/1951 | 28/06/1951 |
| Gibraltar | Extension | 28/06/1951 | 28/06/1951 |
| Gilbert And Ellice Islands | Extension | 28/06/1951 | 28/06/1951 |
| Gold Coast | Extension | 28/06/1951 | 28/06/1951 |
| Hong Kong | Extension | 28/06/1951 | 28/06/1951 |
| JAMAICA | Extension | 28/06/1951 | 28/06/1951 |
| KENYA | Extension | 28/06/1951 | 28/06/1951 |
| Leeward Islands | Extension | 28/06/1951 | 28/06/1951 |
| Malay States, Federated | Extension | 28/06/1951 | 28/06/1951 |
| MALTA | Extension | 28/06/1951 | 28/06/1951 |
| MAURITIUS | Extension | 28/06/1951 | 28/06/1951 |
| NIGERIA | Extension | 28/06/1951 | 28/06/1951 |
| North Borneo | Extension | 28/06/1951 | 28/06/1951 |
| Northern Rhodesia | Extension | 28/06/1951 | 28/06/1951 |
| Nyasaland | Extension | 28/06/1951 | 28/06/1951 |
| Sarawak | Extension | 28/06/1951 | 28/06/1951 |
| SEYCHELLES | Extension | 28/06/1951 | 28/06/1951 |
| SIERRA LEONE | Extension | 28/06/1951 | 28/06/1951 |
| SINGAPORE | Extension | 28/06/1951 | 28/06/1951 |
| Somaliland Protectorate | Extension | 28/06/1951 | 28/06/1951 |
| Southern Rhodesia | Extension | 28/06/1951 | 28/06/1951 |
| St Helena And Dependencies | Extension | 28/06/1951 | 28/06/1951 |
| SWAZILAND | Extension | 28/06/1951 | 28/06/1951 |
| Tanganyika | Extension | 28/06/1951 | 28/06/1951 |
| The Gambia | Extension | 28/06/1951 | 28/06/1951 |
| TONGA | Extension | 28/06/1951 | 28/06/1951 |
| TRINIDAD AND TOBAGO | Extension | 28/06/1951 | 28/06/1951 |
| UGANDA | Extension | 28/06/1951 | 28/06/1951 |
| UNITED KINGDOM | | | |
| Windward Islands | Extension | 28/06/1951 | 28/06/1951 |
| Zanzibar | Extension | 28/06/1951 | 28/06/1951 |