Pevensey (pĕvˈənzē) [key], small town (1991 pop. 2,725), East Sussex, S England, on the English Channel. Modern Pevensey, called Pevensey Bay, is a shore resort. In the old town, the site of the Roman fort Anderida, are remains of Roman walls and a Norman castle. The town, the landing place of William the Conqueror, was a member of the Cinque Ports. It declined after the recession of the sea. The Pevensey church is partly Early English.