| Country | Action | Action Date | Effective Date |
|---|
| AUSTRIA | Accession | 27/05/1998 | |
| AUSTRIA | Declaration | 27/05/1998 | |
| BELGIUM | Signature | 07/09/1967 | |
| BELGIUM | Ratification | 11/07/1969 | |
| DENMARK | Accession | 07/06/1973 | 01/09/1973 |
| FRANCE | Ratification | 12/12/1969 | |
| FRANCE | Signature | 07/09/1976 | |
| GERMANY FEDERAL REPUBLIC | Signature | 07/09/1967 | |
| GERMANY FEDERAL REPUBLIC | Ratification | 16/03/1970 | |
| GREECE | Accession | 21/04/1975 | 01/07/1975 |
| Guernsey, Bailiwick of | Extension | 23/01/1974 | 01/04/1974 |
| IRELAND, REPUBLIC OF | Accession | 15/05/1974 | 01/08/1974 |
| Isle of Man | Extension | 23/01/1974 | 01/04/1974 |
| ITALY | Signature | 07/09/1967 | |
| ITALY | Ratification | 27/10/1971 | |
| Jersey | Extension | 23/01/1974 | 01/04/1974 |
| LUXEMBOURG | Signature | 07/09/1967 | |
| LUXEMBOURG | Ratification | 11/11/1969 | |
| NETHERLANDS THE | Signature | 07/09/1967 | |
| NETHERLANDS THE | Ratification | 12/03/1970 | |
| PORTUGAL | Accession | 02/09/1994 | 01/12/1994 |
| SPAIN | Accession | 22/06/1989 | 01/10/1989 |
| UNITED KINGDOM | Accession | 23/01/1974 | 01/04/1974 |