Walney Island, also known as the Isle of Walney, is an island off the west coast of England, at the western end of Morecambe Bay in the Irish Sea. The island is in Cumbria and is also located within the boundaries of the historic county of Lancashire. It is part of Barrow-in-Furness and is separated from the mainland by Walney Channel, which is spanned by the Jubilee Bridge. Walney is the largest island of the Furness Islands group, both in population and size, as well as the largest English island in the Irish Sea. Its population at the 2011 UK Census was 10,651, distributed evenly across the island's two Wards of Walney North and Walney South.
Walney Island formed during the last glacial period, when the River Duddon was a large glacial lake, depositing till at its mouth, which became Walney. Some evidence of Neolithic inhabitants has been found in the island's sand dunes, though its name is likely of Norse origin. The island remained rural until the growth of Barrow-in-Furness' industries in the nineteenth century. In particular, the development between 1867 and 1881 of docks at Barrow Island, in Walney Channel opposite Walney, encouraged the growth of Walney as a settlement.
