| Country | Action | Action Date | Effective Date |
|---|
| BELGIUM | Signature | 15/05/1952 | |
| BELGIUM | Ratification | 03/08/1955 | |
| FRANCE | Signature | 15/05/1952 | |
| FRANCE | Ratification | 23/06/1952 | |
| GHANA | Accession | 24/02/1959 | |
| Gold Coast | Participation | 17/06/1953 | |
| KENYA | Participation | 17/06/1953 | |
| Nigeria | Participation | 17/03/1953 | |
| Northern Rhodesia | Participation | 17/06/1953 | |
| Nyasaland | Participation | 17/06/1953 | |
| Rhodesia And Nyasaland | Extension | 31/05/1956 | |
| Sierra Leone | Participation | 17/06/1953 | |
| SWEDEN | Signature | 15/05/1952 | |
| SWEDEN | Participation | 17/08/1954 | |
| Tanganyika | Participation | 17/06/1953 | |
| The Gambia | Participation | 17/06/1953 | |
| Uganda | Participation | 17/06/1953 | |
| UNITED KINGDOM | Signature | 15/05/1952 | |
| UNITED KINGDOM | Ratification | 17/06/1953 | |
| UNITED KINGDOM | Declaration | 17/06/1953 | |
| UNITED KINGDOM | Declaration | 31/05/1956 | |