The A259 is a road on the south coast of England passing through Hampshire, West Sussex, East Sussex, and Kent, and is the longest Zone 2 A road in Great Britain. The main part of the road connects Brighton, Peacehaven, Eastbourne, Hastings, Rye, and Folkestone.

West Sussex is a ceremonial county in South East England. It is bordered by Surrey to the north, East Sussex to the east, the English Channel to the south, and Hampshire to the west. The largest settlement is Crawley, and the county town is the city of Chichester.