Bangor research has significantly affected vegetable sourcing and distribution policies and practice of major fresh producers and UK supermarkets. Using a novel carbon footprinting model that incorporates all components of the production chain, the research demonstrated that footprints of vegetables vary with season, origin, production processes, transport and storage. The application of this model by industry partners has resulted in measures by food producers, suppliers and supermarkets to reduce carbon footprints, providing direct economic and environmental benefits through both waste reduction and technology implementation. Furthermore, the findings have impacted on sustainability policy development by the World Bank, international NGOs and Welsh Government, and influenced consumer awareness and debate on the environmental impact of food.