Half of England is now officially in drought. The Environment Agency says it will enhance its monitoring of water levels and crucially for many farmers, step up controls on how much water can be taken from rivers and groundwater. The BBC's local radio stations have been devoting the day to agriculture and as part of this Farmwatch the BBC has been looking at the price of food and how much of what we pay goes to farmers.According to the Consumer Price Index from May this year, families are paying