| Country | Action | Action Date | Effective Date |
|---|
| ALGERIA | Signature | 28/06/1946 | |
| ALGERIA | Ratification | 19/10/1962 | |
| Anguilla | Extension | 08/03/1961 | |
| Bermuda | Extension | 08/03/1961 | |
| British Virgin Islands | Extension | 08/03/1961 | |
| Falkland Islands | Extension | 08/03/1961 | |
| FRANCE | Signature | 28/06/1946 | |
| FRANCE | Ratification | 09/12/1948 | |
| Gibraltar | Extension | 08/03/1961 | |
| Guernsey | Extension | 08/03/1960 | |
| Hong Kong | Extension | 08/03/1961 | |
| Isle of Man | Extension | 10/03/1956 | |
| Jersey | Extension | 08/03/1960 | |
| Montserrat | Extension | 08/03/1961 | |
| NETHERLANDS THE | Signature | 28/06/1946 | |
| NETHERLANDS THE | Ratification | 22/12/1961 | |
| PERU | Signature | 28/06/1946 | |
| PERU | Ratification | 04/04/1962 | |
| POLAND | Signature | 28/06/1946 | |
| POLAND | Ratification | 08/10/1956 | |
| SPAIN | Signature | 28/06/1946 | |
| SPAIN | Ratification | 08/05/1973 | |
| SPAIN | Denunciation | 08/05/1973 | |
| St Helena | Extension | 08/03/1961 | |
| UNITED KINGDOM | Signature | 28/06/1946 | |
| UNITED KINGDOM | Ratification | 20/05/1953 | |