– operated by Townsend Thoresen until 1987 Dublin-Cherbourg (2002–2004) Felixstowe-Zeebrugge (1987–2002) – operated by Townsend Thoresen until 1987 Felixstowe-Rotterdam (1987–2002) – transferred to Stena Line Fleetwood–Larne (1973–2004) – transferred to Stena Line Hull–Rotterdam – operated by North Sea Ferries until 1997 Hull–Zeebrugge – ceased at end of 2020 season due to unprofitability Larne–Cairnryan – operated by Townsend Thoresen until 1987 Larne–Troon (2001–2015) – ceased at end of 2015 season due to unprofitability Liverpool–Belfast (1971–1981) Liverpool–Dublin – operated by B&I Line until 1975 Middlesbrough-Gothenburg (1981–2001) Mostyn–Dublin (2001–2004) Portsmouth–Cherbourg (1987–2005) – operated by Townsend Thoresen until 1987 Portsmouth–Le Havre (1987–2005) – " " Portsmouth–Caen (2004) Portsmouth–Bilbao (1993–2010) Rosslare–Cherbourg (1993–2005) – transferred to Celtic Link Ferries Southampton–Le Havre (1967–1985) – transferred to Normandy Ferries Ltd Freight-only routes Dover–Zeebrugge (1991–2002) Teesport–Rotterdam Teesport–Zeebrugge Tilbury–Zeebrugge Calais-Tilbury References Notes Bibliography External links Official P&O Ferries website Swedish website P&O Ferries Freight Site P&O (company) DP World Ferry companies of Belgium Ferry companies of England Ferry companies of France Ferry companies of Ireland Ferry companies of the Netherlands Ferry companies of Northern Ireland Ferry companies of Scotland Ferry companies of Spain Connections across the English Channel British brands