| 9 June 1837 |
12 July 1937 |
Convention between Great Britain France and The Hans Towns containing the accession of The Hans Towns to 2 Conventions between Great Britain and France, for the more effectual Suppression of the Slave Trade |
| 20 March 1841 |
|
Convention of Commerce and Navigation between Her Majesty and the Free Hanseatic Cities of Lubeck, Bremen, and Hamburgh ; Supplementary to the Convention signed at London, September 29, 1825 |
| 3 August 1841 |
|
Convention of Commerce and Navigation between Great Britain and the Hans Towns |
| 16 August 1853 |
|
Convention between Great Britain and the free Hanseatic city of Hamburgh, for the establishment of International Copyright |
| 16 April 1856 |
|
Declaration respecting Maritime Law, signed by the Plenipotentiaries of Great Britain, Austria, France, Prussia, Russia, Sardinia, and Turkey, assembled in Congress at Paris - April 16, 1856 |
| 7 May 1866 |
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Convention between the British Government and the Government of Hamburgh, for regulating the Postal Communications with Heligoland |