The UK register took a hit from Brexit on Tuesday as P&O Ferries said it was reflagging the rest of its cross-Channel fleet to Cyprus.
A company spokesman told Cypriot state-run news agency CNA the ships involved are the 30,600-gt Pride of Canterbury (built 1991) and Pride of Kent (built 1992), the 28,100-gt Pride of Burgundy (built 1993) and the 23,000-gt European Seaway (built 1991).