The UK faces higher food prices without continued access to EU workers, 30 food and drink associations have warned.
In a letter published in the Guardian, they argue that EU workers play an important role in the supply chain and some are already starting to leave.
It called on the government to offer “unambiguous reassurance” about their right to remain.
The Home Office said in response it was “harnessing the industry’s knowledge” and “ensuring their voice was heard”.
Nearly four million people in the UK are employed in everything from harvesting to production to selling food and drink.