Shopping at supermarkets is destroying British agriculture and ruining the countryside. 60-70% of all food now passes through four companies; Tesco, Sainsbury, Safeway and Asda. This control over the food chain allows supermarkets to determine the price they pay to farmers, with farmers forced to take that price due to there being no other buyer left in the market place.Big farmers are getting bigger to survive while small farmers are going bust, leading to farming monoculture and unemployment.