Although Derbyshire is in the East Midlands, some parts, such as High Peak (which incorporated former areas of Cheshire after boundary changes in 1974), are closer to the northern cities of Manchester and Sheffield and these receive services more affiliated with northern England; for example, the North West Ambulance Service, Granada Television and United Utilities serve the Glossop area and the NHS Trusts here are governed by the Greater Manchester Health Authority. Outside the main city of Derby, the largest town in the county is Chesterfield.