In the late 1960s, P&O established ferry services in the North Sea and English Channel. Roll-on/roll-off operations and containerisation were introduced and new ships, facilities and investment was needed to take advantage of developments. What followed was several decades of growth, buyouts and divisions. The twenty-first century saw the closure of several routes as the ferries saw increased competition from low-cost airline and the Channel Tunnel. Throughout this period, P&O attracted a loyal customer base and became one of the most recognisable names on the sea. Utilising a selection of rare and previously unpublished images, maritime historian Ian Collard delves into the story of this iconic company and its ships.