The Isle of Walney, also known as Walney Island, is an island off the west coast of England, at the western end of Morecambe Bay. It forms part of the town of Barrow-in-Furness, and it is separated from mainland Barrow by Walney Channel, a narrow 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.