| Country | Action | Action Date | Effective Date |
|---|
| Anguilla | Decision Resvd. | 07/07/1964 | |
| ARGENTINA | Ratification | 17/02/1955 | |
| Bermuda | Decision Resvd. | 13/04/1964 | |
| British Virgin Islands | Decision Resvd. | 28/02/1966 | |
| BULGARIA | Ratification | 29/12/1949 | |
| CHILE | Ratification | 18/10/1935 | |
| CZECHOSLOVAKIA | Ratification | 01/08/1949 | |
| DJIBOUTI | Ratification | 03/08/1978 | |
| Dominica | Decision Resvd. | 03/08/1964 | |
| ECUADOR | Ratification | 05/02/1962 | |
| Falkland Islands | Extension | 21/05/1964 | |
| FRANCE | Ratification | 23/08/1939 | |
| Gibraltar | Extension | 21/05/1964 | |
| Guernsey | Extension | 18/07/1936 | |
| Hong Kong | Decision Resvd. | 13/04/1964 | |
| Isle of Man | Extension | 18/07/1936 | |
| ITALY | Ratification | 22/10/1947 | 22/10/1948 |
| Jersey | Extension | 18/07/1936 | |
| Malta | Extension | 21/05/1964 | |
| MALTA | Ratification | 04/01/1965 | |
| Montserrat | Decision Resvd. | 12/06/1964 | |
| PERU | Ratification | 08/11/1945 | |
| POLAND | Ratification | 29/09/1948 | |
| Seychelles | Decision Resvd. | 10/03/1965 | |
| St Helena | Decision Resvd. | 12/06/1964 | |
| UNITED KINGDOM | Signature | 29/06/1933 | |
| UNITED KINGDOM | Ratification | 18/07/1936 | |