| 19 November 1953 |
19 July 1954 |
Exchange of Letter on behalf of Trinidad and Tobago relating to the use of five islands for recreational purposes |
| 16 January 1962 |
1 April 1961 |
Overseas Service Agreement between the United Kingdom and the West Indies Associated States (No.36) |
| 22 November 1963 |
9 May 1964 |
Exchange of Letters between the Government of the United Kingdom of Great Britain and Northern Ireland and the Government of Trinidad and Tobago amending the Public Officers Agreement signed at London in 1960 |
| 29 December 1966 |
23 March 1967 |
Agreement between the Government of the United Kingdom of Great Britain and Northern Ireland and the Government of Trinidad and Tobago for the Avoidance of Double Taxation and the Prevention of Fiscal Evasion with respect to Taxes on Income |
| 9 October 1968 |
25 September 1968 |
Exchanges of Notes and Letters concerning the Guarantee by the United Kingdom and the Maintenance of the Minimum Sterling Proportion by certain Overseas Sterling Area Governments (The Sterling Area Agreements) |