The reports finds that:

• If no trade deal is reached, UK food prices could increase because of tariffs
• If, to counter price rises, tariffs are cut on all EU and non-EU food imports, then many UK producers could be driven out of business
• Even with a trade deal between the UK and EU, leaving the customs union could cause “non-tariff barriers” such as customs and border checks, potentially overwhelming existing UK capacity and reducing availability of some products
• It would not be easy to increase either UK food production or imports from non-EU countries
• Fruit and vegetables may be particularly affected, as 37% and 40%, respectively, of UK supply of these comes from the EU
• Any price increases could lead to greater food insecurity in the UK.

Find the full report here. See also the Foodsource building block What is food security?