High speed car ferries to France and Belgium. Online bookings, short breaks and holidays.
http://www.hoverspeed.com

Irish Ferries is Ireland's largest ferry company operating between Ireland and Britain. It prides itself on having the most modern fleet on the Irish Sea. View this site for timetables, fares, online booking and holidays for ferry services. between the UK and Ireland.
http://www.irishferries.ie

The Peninsular and Oriental Steam Navigation Company (P&O) is a major international logistics and transport company founded in 1837. P&O Ferries is the new brand name for services previously known as - P&O Stena Line (routes from Dover); P&O Portsmouth (routes from Portsmouth); and P&O North Sea ferries (routes from Hull).
http://www.poportsmouth.com

SpeedFerries offers you the fastest ferry crossing and a more direct link between Britain and France(Dover - Boulogne) from just £25 for a one way ticket for a standard car including 5 passengers.
http://www.speedferries.com