In protest of the UK's failure to issue more fishing licenses in British waters, French fishermen blockaded the port of Calais on Friday, temporarily preventing two ferries carrying trucks and passengers from entering.

Several trawlers maneuvered to force the DFDS and P&O ferries to slow down and stop outside the port, a major entry point into the continental market for British goods. The 90-minute blockade marked an escalation in the post-Brexit row between London and Paris over fishing rights in British coastal waters.

Britain claims that any licenses withheld lack the necessary documentation to be issued.

The protest then moved to the Channel Tunnel, where the fishermen slowed the movement of goods to and from Britain via the rail link.

The Channel Tunnel | Institution of Civil Engineers

Dover-Calais is the shortest sea route between the United Kingdom and the European Union, measuring only 23 miles (37 kilometers), and has been one of the United Kingdom's main arteries for European trade since the Middle Ages.

France and the UK are also involved in a squabble over cross-Channel migration.

Following the United Kingdom's exit from the European Union, the two sides agreed to establish a licensing system for granting fishing vessels access to each other's waters. Paris claims that London and the Channel Island of Jersey, a British crown dependency, are not upholding their end of the bargain. Britain, on the other hand, claims to be abiding by the post-Brexit arrangements.