Complex sentence: It consists mainly of the former P&O Princess brands and has executive control of P&O Cruises, P&O Cruises Australia, Cunard Line and until 2010 Ocean Village, it also markets and sells the Princess Cruises & Yachts of Seabourn brands in the UK.
Split into simpler sentences: It consists mainly of the former P&O Princess brands and has executive control of P&O Cruises, P&O Cruises Australia, Cunard Line. It also markets and sells the Princess Cruises & Yachts of Seabourn brands in the UK.