Russia imported food and produce worth almost £10bn to Russia last year, although the total for Britain is much smaller.
However, UK farmers fear that prices will fall following Russia's decision to ban imports of EU fruit, vegetables, meat and dairy products for 12 months because of a likely glut from European farms.
ITV News correspondent Emily Morgan reports.
More top news
The BBC, The Daily Mail, The Guardian, and Buzzfeed were among organisations not allowed access to a government meeting.
Mexico's Foreign Minister has warned Donald Trump against imposing a tax to pay for a border wall between the two nations.
Rain will affect many northern areas at first, pushing further south through the day.