Coastliner 700 is a bus service operated in West Sussex and south east Hampshire, England, by Stagecoach South between Brighton and Portsmouth via Hove, Shoreham-by-Sea, Worthing, Littlehampton, Wick, Bognor Regis, Chichester, Havant, and Portsmouth with a general daytime frequency of every 15 minutes. The route has its own livery and is usually operated with double-decker buses.