| 4 April 1844 |
|
Treaty of Commerce and Navigation between Great Britain and Oldenburg |
| 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 |
| 14 March 1857 |
31 March 1857 |
Treaty between Great Britain, Austria, Belgium, France, Hanover, Mecklenburg-Schwerin, Oldenburg, Netherlands, Prussia, Russia, Sweden and Norway, and the Hanse Towns, on the one part, and Denmark, on the other part, for the Redemption of the Sound Dues |
| 16 July 1863 |
|
Treaty between Great Britain, Austria, Brazil, Chile, Denmark, Spain, France, Hanover, Italy, Oldenburg, Peru, Portugal, Prussia, Russia, Sweden, and Norway, Turkey, and the Hanse Towns, on the one part, and Belgium on the other part, for the Redemption of the Scheldt Toll |
| 30 May 1865 |
1 July 1865 |
Treaty of Commerce between Great Britain and the Zollverein |