| Country | Action | Action Date | Effective Date |
|---|
| ALBANIA | Ratification | 02/03/2005 | 02/03/2006 |
| ALGERIA | Signature | 01/07/1949 | |
| ALGERIA | Ratification | 19/10/1962 | |
| Antigua | Extension | 22/09/1960 | |
| ARMENIA | Ratification | 27/01/2006 | 27/01/2007 |
| Bahamas | Extension | 13/02/1961 | |
| BAHAMAS | Succession | 25/05/1976 | |
| Barbados | Extension | 22/09/1960 | |
| BARBADOS | Succession | 08/05/1967 | |
| Bechuanaland | Declaration | 24/09/1965 | |
| BELGIUM | Signature | 01/07/1949 | |
| BELGIUM | Ratification | 27/07/1953 | |
| BELIZE | Accession | 15/12/1983 | |
| Bermuda | Decision Resvd. | 16/12/1958 | |
| BOSNIA AND HERZEGOVINA | Accession | 02/06/1993 | 02/06/1993 |
| BRAZIL | Signature | 01/07/1949 | |
| BRAZIL | Ratification | 18/06/1965 | |
| British Guiana | Extension | 22/09/1960 | |
| British Honduras | Extension | 05/09/1966 | |
| British Virgin Islands | Extension | 22/09/1960 | |
| CAMEROON | Signature | 01/07/1949 | |
| CAMEROON | Ratification | 03/09/1962 | |
| CAMEROON | Declaration | 11/04/1975 | |
| CUBA | Signature | 01/07/1949 | |
| CUBA | Ratification | 29/04/1952 | |
| CYPRUS | Signature | 01/07/1949 | |
| Cyprus | Extension | 16/12/1958 | |
| CYPRUS | Ratification | 23/09/1960 | |
| Dominica | Extension | 22/09/1960 | |
| DOMINICA, COMMONWEALTH OF | Accession | 28/02/1982 | 28/02/1983 |
| ECUADOR | Accession | 05/04/1978 | 05/04/1979 |
| Falkland Islands | Decision Resvd. | 16/12/1958 | |
| FRANCE | Signature | 01/07/1949 | |
| FRANCE | Ratification | 29/03/1954 | |
| FRANCE | Declaration | 27/11/1974 | |
| French Overseas Territories | Extension | 27/11/1974 | |
| GERMANY FEDERAL REPUBLIC | Signature | 01/07/1949 | |
| GERMANY FEDERAL REPUBLIC | Ratification | 22/06/1959 | |
| Gibraltar | Decision Resvd. | 16/12/1958 | |
| Grenada | Extension | 22/09/1960 | |
| GRENADA | Succession | 09/07/1979 | 09/07/1979 |
| GUATEMALA | Signature | 01/07/1949 | |
| GUATEMALA | Ratification | 13/12/1952 | |
| Guernsey | Extension | 10/03/1956 | |
| GUYANA | Accession | 08/06/1966 | |
| Hong Kong | Decision Resvd. | 11/08/1980 | |
| Isle of Man | Extension | 10/03/1956 | |
| ISRAEL | Signature | 01/07/1949 | |
| ISRAEL | Ratification | 30/03/1953 | |
| ITALY | Signature | 01/07/1949 | |
| ITALY | Ratification | 22/10/1952 | |
| Jamaica | Extension | 22/09/1960 | |
| JAMAICA | Succession | 26/12/1962 | |
| Jersey | Extension | 10/03/1956 | |
| Kenya | Extension | 16/12/1958 | |
| KENYA | Accession | 30/11/1965 | |
| MADAGASCAR | Ratification | 14/06/2001 | 14/06/2002 |
| MALAWI | Accession | 22/03/1965 | 22/03/1966 |
| MALAYSIA | Accession | 03/03/1964 | |
| Mauritius | Extension | 16/12/1958 | |
| MAURITIUS | Succession | 02/12/1969 | |
| Montserrat | Extension | 22/09/1960 | |
| NETHERLANDS THE | Signature | 01/07/1949 | |
| NETHERLANDS THE | Ratification | 20/05/1952 | |
| NEW ZEALAND | Signature | 01/07/1949 | |
| NEW ZEALAND | Ratification | 10/11/1950 | |
| Nigeria | Extension | 16/12/1958 | |
| NIGERIA | Succession | 17/10/1960 | |
| North Borneo | Extension | 16/12/1958 | |
| NORWAY | Signature | 01/07/1949 | |
| NORWAY | Ratification | 17/02/1955 | |
| PORTUGAL | Accession | 12/12/1978 | 12/12/1979 |
| PORTUGAL | Declaration | 18/11/1999 | |
| SAINT LUCIA | Succession | 14/05/1980 | 14/05/1980 |
| SLOVENIA | Accession | 29/05/1992 | |
| SPAIN | Accession | 21/03/1967 | |
| St Helena | Decision Resvd. | 16/12/1958 | |
| St Kitts Nevis Anguilla | Extension | 22/09/1960 | |
| St Lucia | Extension | 22/09/1960 | |
| St Vincent | Extension | 22/09/1960 | |
| Tanganyika | Extension | 16/12/1958 | |
| TANGANYIKA AND ZANZIBAR | Accession | 22/06/1964 | |
| The Gambia | Extension | 16/12/1958 | |
| Trinidad | Extension | 22/09/1960 | |
| TRINIDAD AND TOBAGO | Succession | 24/05/1963 | |
| Uganda | Extension | 16/12/1958 | |
| UNITED KINGDOM | Signature | 01/07/1949 | |
| UNITED KINGDOM | Ratification | 22/01/1951 | |
| UNITED KINGDOM | Declaration | 10/03/1956 | |
| UNITED KINGDOM | Declaration | 16/12/1958 | |
| UNITED KINGDOM | Declaration | 22/09/1960 | |
| UNITED KINGDOM | Declaration | 13/02/1961 | |
| UNITED KINGDOM | Declaration | 05/09/1966 | |
| UNITED KINGDOM | Declaration | 11/08/1980 | |
| UPPER VOLTA | Accession | 09/06/1961 | |
| URUGUAY | Signature | 01/07/1949 | |
| URUGUAY | Ratification | 18/03/1954 | |
| VENEZUELA | Accession | 09/06/1983 | 09/06/1984 |
| YUGOSLAVIA | Accession | 04/12/1968 | |
| YUGOSLAVIA, FEDERAL REPUBLIC OF | Ratification | 24/11/2000 | 24/11/2000 |
| ZAMBIA | Accession | 02/12/1964 | |
| Zanzibar | Extension | 16/12/1958 | |