Cornwall Cornwall Cornwall (; ) is a county in South West England in the United Kingdom. The county is bordered to the north and west by the Celtic Sea, to the south by the English Channel, and to the east by the county of Devon, over the River Tamar which forms most of the border between them. Cornwall forms the westernmost part of the South West Peninsula of the island of Great Britain. The furthest southwestern point of the island is Land's End; the southernmost point is Lizard Point. Cornwall has a population of and covers an area of . The
Glamorgan of Cardiff. Flat Holm is the most southerly point of Glamorgan and Wales. From Lavernock Point the coast heads sharply west to the town of Barry, a well-known seaside resort, Barry is most notable for its rapid expansion during the late 19th century to become an important dock, at one stage surpassing Cardiff Dock for the tonnage of coal exported. Passing the cliffs of Barry Island the coastline becomes a low-lying promontory called the Lays, which continues west taking in the villages of Rhoose and Aberthaw before reaching Breaksea Point, the most southerly point of mainland Wales. Beyond the point