| 7 April 1815 |
8 December 1815 |
Treaty of Accession of Hanover to the Treaty of Alliance of 25 March 1815 |
| 22 July 1844 |
|
Treaty of Commerce and Navigation between Great Britain and Hanover |
| 4 August 1847 |
|
Convention between Great Britain and Hanover, 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 |
| 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 |
| 22 June 1861 |
|
Treaty between Great Britain, Austria, Belgium, Brazil, Denmark, Spain, France, Mecklenburg-Schwerin the Netherlands, Portugal, Prussia, Russia, Sweden and Norway, and the Hanse Towns, on the one part, and Hanover on the other part, for the Redemption of the Stade Toll |
| 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 |