| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| BOSNIA AND HERZEGOVINA | Succession | 01/10/1997 | |
| Isle of Man | Extension | 24/05/1958 | |
| KOSOVO | Succession | 21/10/2009 | |
| MONTENEGRO | Succession | 03/12/2014 | |
| SERBIA AND MONTENEGRO | |||
| SLOVENIA | Succession | 25/06/1991 | 25/06/1991 |
| UNITED KINGDOM | Signature | 24/05/1958 | |
| UNITED KINGDOM | Ratification | 28/07/1958 | |
| YUGOSLAVIA | Signature | 24/05/1958 | |
| YUGOSLAVIA | Ratification | 28/07/1958 |