Arundel ) is a market town and civil parish in the South Downs of West Sussex in the south of England. It lies 49 mi south southwest of London, 18 mi west of Brighton, and 10 mi east of the county town of Chichester. Other nearby towns include Worthing east southeast, Littlehampton to the south and Bognor Regis to the southwest. The River Arun runs through the western side of the town.Arundel was one of the boroughs reformed by the Municipal Reform Act 1835. In 1974 it became part of the Arun district, and now is a civil parish with a town council.