That is a matter for them really.
But one thing we do know about Brexit is at the heart of it is fairness. Whether that's human imports, and treating people the same wherever they come from on merit only, or about imported animal products and plants. As of now an anomaly remains in that EU exporters to the UK face an unfair advantage in their products not being checked by the UK in the same manner as goods from the rest of the world. This is against the fairness Brexit seeks to introduce for all and also against WTO rules.
However at some point, as a Brexit benefit to our UK farmers and hopefully soon, imports from the EU will have to be checked and UK farmers are looking forward to the level playing field once these checks are implemented. They will get an undeniable Brexit boost to their produce sold in the UK at the expense of EU exporters.
Another Brexit win for the UK, one of the many from leaving the EU, if you will.