The Borough of Welwyn Hatfield is a local government district in southern Hertfordshire, England, governed by Welwyn Hatfield Borough Council. It covers the two towns of Welwyn Garden City and Hatfield, along with numerous smaller settlements from Woolmer Green in the north to Little Heath in the south. Each of the towns has a railway station on the East Coast Main Line and they are close to the A1 road. It borders the London Borough of Enfield.