Anglo-Scottish border its hesitation over whether it is part of Scotland or England. Berwickshire is in Scotland while the town is in England, although both Berwick and the lands up to the Firth of Forth belonged to the Kingdom of Northumbria in the Early Middle Ages. The town changed hands more than a dozen times before being finally taken by the English in 1482. In the 1950s the artist Wendy Wood moved the border signs south to the middle of the River Tweed as a protest. In 2008 SNP MSP Christine Grahame made calls in the Scottish Parliament for Berwick to become
River Wye river from Redbrook to Chepstow forms the border between England and Wales. The River Wye forms two Sites of Special Scientific Interest, one covering the Upper Wye ("Gwy Uchaf") above Hay-on-Wye, and one covering the Lower Wye ("Gwy Isaf") downstream to Chepstow. The criteria for inclusion of the river as an SSSI include geology, topography, flora, mammals, invertebrates, fish and birdlife, as the river and its tributaries constitute a large linear ecosystem. The Lower Wye SSSI is itself divided into seven units of assessment set by Natural England, and administrative responsibilities are shared between the county authorities of Powys, Herefordshire,