With 18% of us buying British food, thousands of farms have been lost and the countryside is endangered. Rosie Boycott talks to farmers Peter and Juliet Kindersley, Roger Williams MP, Charlotte Hollins of Fordhall Farms, Jane Clarke, Meat buyer for Waitrose and Barbara Crowther of the Fairtrade Foundation about the Fair Trade for British Farmers campaign, and how we can help rural Britain by changing our food-shopping habits.