The Best and Most Versatile (BMV) agricultural land is classed as grade 3b and above. Most arable and vegetable crops can be grown on grade 3 soils and above. Top fruit crops tend to require grade 1 or grade 2 land. Most grade 1 land in the UK is already under agricultural production.
The UK gets its food from different sources including strong domestic production and imports from the EU and beyond. We will still have a high level of food security whether we leave the EU with or without a deal and our future agriculture policy will allow farmers to continue providing a supply of healthy, home-grown produce made to high environmental and animal welfare standards.