Complex sentence: Established by a group of independent distillers in 1885, presently a joint venture company between Diageo plc and the privately held Edrington Group, it is Edinburgh's last working distillery, widely known as "NB".
Split into simpler sentences: Established by a group of independent distillers in 1885, it is now a joint venture company between Diageo plc and the privately held Edrington Group. It is Edinburgh's last working distillery, widely known as "NB".