Coordinates: 50°49′13″N 0°20′18″E / 50.8203°N 0.3383°E / 50.8203; 0.3383
Pevensey is a village and civil parish in the Wealden district of East Sussex, England. The main village is located 5 miles (8 km) north-east of Eastbourne, one mile (1.6 km) inland from Pevensey Bay. The settlement of Pevensey Bay forms part of the parish. It was here that William the Conqueror first landed on and invaded England in 1066 after crossing the English Channel from Normandy, France.
Pevensey is situated on a spur of sand and clay, about 10 metres (33 ft) above sea level. In Roman times this spur was a peninsula that projected into a tidal lagoon and marshes. A small river, Pevensey Haven, runs along the north side of the peninsula and would originally have discharged into the lagoon, but is now largely silted up. The lagoon extended inland as far north as Hailsham and eastwards to Hooe. With the effect of longshore drift this large bay was gradually cut off from the sea by shingle, so that today's marshes are all that remain behind the shingle beach.