| 29 May 1965 |
18 August 1965 |
Investment Guaranty Agreement with British Guiana |
| 26 May 1966 |
26 May 1966 |
Agreement between the Government of the United Kingdom of Great Britain and Northern Ireland and the Government of Guyana regarding the Status of Her Majesty's Forces in Guyana |
| 26 May 1966 |
26 May 1966 |
Public Officers Agreement between the Government of the United Kingdom of Great Britain and Northern Ireland and the Government of Guyana |
| 15 June 1967 |
26 May 1966 |
Exchange of Letters between the Government of the United Kingdom of Great Britain and Northern Ireland and the Government of Guyana concerning the Provision of Personnel of the United Kingdom Armed Forces to assist in the Staffing, Administration and Training of the Armed Forces of Guyana |
| 20 September 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 Guyana |
| 12 July 1969 |
12 July 1969 |
Exchange of Notes concerning the United Kingdom/Guyana Development Loan 1969/1971, and Exchange of Letters amending the above, of 06:05:1976 (ANG 093/548/1(20)1976) |
| 12 July 1969 |
12 July 1969 |
Exchange of Notes concerning the United Kingdom/Guyana Sea Defence Loan 1969 and Exchange of Letters amending the foregoing (06:05:1976 - SANG 093/548/1 (19) 1976) |