These were previously operated at different times as separate subsidiaries of P&O under the names Pandoro Ltd, P&O European Ferries, P&O Portsmouth, P&O North Sea Ferries, P&O Irish Sea and the joint venture P&O Stena Line.
В разное время дочерние компании оператора носили следующие имена: "P&O European Ferries", P"&O Portsmouth", "P&O North Sea Ferries", "P&O Irish Sea" и "P&O Stena Line".