France shows "no tolerance" towards the United Kingdom anymore, French minister Clément Beaune (Europe) said in a talk program on Thursday morning.
Since the night of Wednesday to Thursday, all French ports have been monitored and none of them is accessible to British fishing boats.
France takes the measure in the context of the fishing war between the two countries that has been raging for some time.
Fisheries were one of the most contentious topics during the UK's exit negotiations from the EU.
Countries like Ireland, France and Spain wanted to protect jobs in their coastal communities, while the UK tried to regain control of its territorial waters.
That's why the UK withdrew most countries from their fishing licenses for British waters.
However, according to France, this goes against the Brexit agreements.
It was agreed that European fishermen would gradually have to give up a quarter of their quota during a transitional period of 5.5 years.
The British ministry, which deals with fishing licenses, has previously granted 12 of the 47 licenses requested by small French boats to fish in British waters.
The other licenses were denied because these boats could not provide sufficient proof that they had also fished in the waters in the past, the department said.
So France does not agree with that, and the country is now taking measures.
British fishing boats have been banned from France since the night of Wednesday to Thursday.
"We are carrying out systematic checks in ports and security checks at sea for British ships," the French minister for Europe said on Thursday morning.
"We no longer show tolerance with the British."
Trucks going to or from the UK will also be checked.
With the measures, the French government wants to force more French fishermen to obtain licenses to fish in British waters.
If nothing has changed before November 2, France will take additional measures.Keywords: