Transmanche ferry, 4 hours to Dieppe.

Apologies if I've done this before. I love them. Haven't been on it yet though

From Wiki
"Transmanche Ferries all year ferry service between Newhaven and Dieppe operates with two very comfortable and modern vessels, the Seven Sisters and the Côte d'Albâtre.

It was formed after the previous operator of this route, P&O Stena Line, decided to concentrate on that company's primary route of Dover - Calais. The last P&O Stena vessel on the route, the Stena Cambria, undertook her last sailing on 31 January 1998. No vessel replaced the Stena Cambria service until a high speed passenger service was instituted by Hoverspeed using SuperSeaCat Two in April 1999, however this service ended in 2004."