| Country | Action | Action Date | Effective Date |
|---|
| ALGERIA | Signature | 27/06/1946 | |
| ALGERIA | Ratification | 19/10/1962 | |
| ANGOLA | Succession | 04/06/1976 | |
| Anguilla | Extension | 13/02/1961 | |
| ARGENTINA | Signature | 27/06/1946 | |
| ARGENTINA | Ratification | 24/09/1956 | |
| BELGIUM | Signature | 27/06/1946 | |
| BELGIUM | Ratification | 05/12/1951 | |
| Bermuda | Extension | 13/02/1961 | |
| British Virgin Islands | Extension | 13/02/1961 | |
| BULGARIA | Signature | 27/06/1946 | |
| BULGARIA | Ratification | 29/12/1949 | |
| CANADA | Signature | 27/06/1946 | |
| CANADA | Ratification | 19/03/1951 | |
| CHINA | Declaration | 20/10/1999 | |
| EGYPT | Ratification | 10/08/1982 | |
| EQUATORIAL GUINEA | Ratification | 23/04/1996 | 23/10/1996 |
| Falkland Islands | Extension | 13/02/1961 | |
| FRANCE | Signature | 27/06/1946 | |
| FRANCE | Ratification | 09/12/1948 | |
| FRANCE | Declaration | 09/12/1948 | |
| Gibraltar | Extension | 13/02/1961 | |
| GREECE | Signature | 27/06/1946 | |
| GREECE | Ratification | 28/08/1981 | 28/02/1982 |
| Guernsey | Extension | 08/03/1960 | |
| Guernsey | Declaration | 08/03/1960 | |
| GUINEA BISSAU | Succession | 21/02/1977 | |
| Hong Kong | Extension | 13/02/1961 | |
| IRELAND, REPUBLIC OF | Signature | 27/06/1946 | |
| IRELAND, REPUBLIC OF | Ratification | 12/06/1956 | |
| Isle of Man | Extension | 22/09/1960 | |
| Isle of Man | Declaration | 09/08/1985 | 09/08/1985 |
| ITALY | Signature | 27/06/1946 | |
| ITALY | Ratification | 22/10/1952 | |
| Jersey | Extension | 08/03/1960 | |
| Jersey | Declaration | 08/03/1960 | |
| LUXEMBOURG | Ratification | 15/02/1991 | 15/08/1991 |
| Montserrat | Extension | 13/02/1961 | |
| NETHERLANDS THE | Signature | 27/06/1946 | |
| NETHERLANDS THE | Ratification | 17/06/1958 | |
| NEW ZEALAND | Signature | 27/06/1946 | |
| NEW ZEALAND | Ratification | 31/05/1977 | 30/11/1977 |
| NEW ZEALAND | Declaration | 31/05/1977 | |
| NORWAY | Signature | 27/06/1946 | |
| NORWAY | Ratification | 28/01/1957 | |
| PANAMA | Signature | 27/06/1946 | |
| PANAMA | Ratification | 04/06/1971 | |
| PERU | Signature | 27/06/1946 | |
| PERU | Ratification | 04/04/1962 | |
| POLAND | Signature | 27/06/1946 | |
| POLAND | Ratification | 13/04/1954 | |
| PORTUGAL | Signature | 27/06/1946 | |
| PORTUGAL | Ratification | 13/06/1952 | |
| PORTUGAL | Declaration | 28/10/1999 | |
| SPAIN | Signature | 27/06/1946 | |
| SPAIN | Ratification | 14/07/1971 | |
| St Helena | Extension | 13/02/1961 | |
| TURKEY | Ratification | 17/03/2005 | 17/03/2005 |
| UNITED KINGDOM | Signature | 27/06/1946 | |
| UNITED KINGDOM | Ratification | 06/08/1953 | |