A fishing boat sails from the harbor as Prime Minister Theresa May visits Plymouth fisheries on May 31, 2017. (Photo: Reuters)

Environment Secretary Michael Gove said leaving the London Fisheries Convention is an important moment as the UK takes back control of its fishing policy.

The convention sits alongside the EU Common Fisheries Policy, which allows all European countries access to waters between 12 and 200 nautical miles from the coast of the UK. The UK will lose its right to waters off the coast of other EU states after Brexit.