Hillesden is large farm estate in Buckinghamshire. It’s in many ways typical of lowland farmland in South-Central England and of the agricultural practices involved in running a modern, profitable arable farm. Since 2005, UK Centre for Ecology & Hydrology and the Wildlife Farming Company have been running a large experiment at Hillesden to explore the best ways of delivering sustainable food production whilst increasing farmland biodiversity. This has involve taking low-yielding and difficult to farm areas out of food production and replacing them with good quality wildlife habitat. With over ten years of detailed environmental data, Hillesden is a now one of the best studied farms in Britain, and an important source of information on the interactions between farming and the environment.