The Anglian RBD covers almost 28,000 sq km from Lincolnshire in the north to Essex in the south, and Northamptonshire in the west to the East Anglian coast. The landscape, which has no extensive metropolitan areas, is predominantly rural with more than half of its land surface used for agriculture or horticulture. However, over 5.2 million people do live and work in the areas small and medium sized towns and cities. Anglian RDB is the richest region in the UK for wetland wildlife. The Broadlands area, in particular, is Britain's largest nationally protected wetland and provides a habitat for a myriad of rare plants and animals.