| 31 October 1956 |
1 November 1956 |
Convention concerning the exchange of money orders in respect of the Colony of St Christopher-Nevis and Anguilla. |
| 27 June 1959 |
1 February 1960 |
Convention for the Exchange of Postal Money Orders with Saint Christopher, Nevis and Anguilla |
| 21 November 1968 |
21 November 1968 |
Investment Guarantees Agreement concerning St Christopher Nevis and Anguilla |
| 6 November 1975 |
20 October 1976 |
Agreement with the Government of the Associated State of St Christopher Nevis and Anguilla, concerning Public Officers' Pensions |