| Country | Action | Action Date | Effective Date |
|---|
| Barbados | Extension | 01/09/1953 | 01/10/1953 |
| British Guiana | Extension | 01/09/1953 | 01/10/1953 |
| British Honduras | Extension | 01/09/1953 | 01/10/1953 |
| FRANCE | | | |
| French Guiana | Extension | 01/09/1953 | 01/10/1953 |
| Gibraltar | Extension | 20/07/1955 | 20/07/1955 |
| Guadeloupe | Extension | 01/09/1953 | 01/10/1953 |
| JAMAICA | Extension | 01/09/1953 | 01/10/1953 |
| Leeward Islands | Extension | 01/09/1953 | 01/10/1953 |
| Martinique | Extension | 01/09/1953 | 01/10/1953 |
| MAURITIUS | Extension | 24/05/1954 | 24/05/1954 |
| Reunion | Extension | 01/09/1953 | 01/10/1953 |
| TRINIDAD AND TOBAGO | Extension | 01/09/1953 | 01/10/1953 |
| UNITED KINGDOM | | | |
| Windward Islands | Extension | 01/09/1953 | 01/10/1953 |