Britain and the European Union on Tuesday will go to court for the first time to resolve a dispute over post-Brexit fishing rights, a case that could complicate Britain's planned reset of relations with the bloc.
A three-person panel at the Permanent Court of Arbitration in the Hague will hear arguments from both sides for three days on whether a British ban on fishing sandeels in its North Sea waters breaches the EU-UK Trade and Cooperation Agreement, TCA.
The three legal experts from France, New Zealand, and South Africa have until late April to deliver a final ruling.
Britain puts the revenue loss for non-UK vessels at 45 million pounds ($56.3 million) in a worst-case scenario.
The three-person tribunal can uphold the ban or rule it breaches the TCA, allowing the EU to retaliate if it is not lifted.
That would upset environmentalists and Brexiteers, who could pressure Britain's Labour government not to yield, a stance that would hamper hopes for better ties with the bloc.
British Prime Minister, Keir Starmer, is due to join EU leaders for a retreat and discuss closer defence ties to counter Russia and to respond to U.S. President Donald Trump's demand that NATO members increase military spending.
Britain is also expected to address other areas in the coming months, such as a veterinary agreement with the EU that would ease agricultural and food trade.
It said that the fishing ban is necessary, reflecting scientific advice on the resilience of the species and the role it plays in the food chain of predators - larger fish, marine mammals, and seabirds such as puffins.
The EU argued that the ban was discriminatory, disproportionate, and not based on the best available scientific evidence.
It said that the fishing prohibition constitutes an unjustified restriction on the access of EU vessels to UK waters granted by the TCA.
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