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South Heighton is a village and civil parish in the Lewes District of East Sussex, England. The village is seven miles (12 km) south of Lewes. In the 1890s the village's population grew from less than 100 to over 500 after a cement manufacturing plant opened nearby. The village is now associated with the urbanised area of Newhaven. There is no place called North Heighton although part of the South Downs above the village is called Heighton Hill, from which one can get to Norton, which lies north-east of South Heighton, and north of Bishopstone.