South West England is one of nine official regions of England. It consists of the counties of Bristol, Cornwall (including the Isles of Scilly), Dorset, Devon, Gloucestershire, Somerset and Wiltshire. Large cities and towns in the region include Bristol, Bournemouth, Cheltenham, Exeter, Gloucester, Plymouth and Swindon. It is geographically the largest of the nine regions of England covering 9,200 square miles (23,800 km2), but the third-least populous, with approximately five million residents.

The region includes the West Country and much of the ancient kingdom of Wessex. It includes two entire national parks, Dartmoor and Exmoor (a small part of the New Forest is also within the region); and four World Heritage Sites: Stonehenge, the Cornwall and West Devon Mining Landscape, the Jurassic Coast and the City of Bath. The northern part of Gloucestershire, near Chipping Campden, is as close to the Scottish border as it is to the tip of Cornwall.[2] The region has by far the longest coastline of any English region.