Christine Tacon has been appointed chairman of the Red Tractor farm assurance scheme - Credit: Copyright: Archant 2015 A Norfolk-born businesswoman who became the UK's first independent supermarket regulator is now set to lead the nation's Red Tractor farm assurance scheme. Christine Tacon has been appointed chairman of Assured Food Standards (AFS) which operates Red Tractor, the largest farm and food assurance scheme in the UK covering food safety, traceability, animal welfare and environmental protection. In 2013 she became the country's first groceries code adjudicator (GCA), a role created to ensure the largest retailers treat their direct suppliers lawfully, to investigate complaints and arbitrate in disputes. She held that position until October 2020 and will now replace Dame Lucy Neville-Rolfe as AFS chairman on January 1.