Fenwick was highly regarded in New Zealand conservation. and was chair of the
Predator Free New Zealand Trust – an organisation committed to supporting volunteers involved in pest control. He chaired the Kiwi Trust, a group dedicated to protecting
kiwi from extinction and sat on the board of Predator Free 2050 Ltd, the company overseeing Crown investment pertaining to
Predator Free 2050 research and project support. Fenwick undertook conservation efforts specific to his home town of Auckland, New Zealand. In 1992, he and others founded the Motutapu Island Restoration Trust and in 2008 the Fenwick family covenanted their 360 hectare coastal property to expand the Hauraki Gulf Marine Park, From 1998 to 2007, Fenwick was director and chairman of the Crown Research Institute
Landcare Research, during which time the institute developed the
carboNZero emission certification program, of which he was later a director. From 1997 he co-founded and later chaired the New Zealand Business Council for Sustainable Development (later the Sustainable Business Council). In 1997 Fenwick and businessman colleague John Beattie bought
Queen Mary Hospital in
Hanmer Springs after the local health authority wanted to close it. Fenwick's motivation was because he had had a close family member treated at Queen Mary, which was a national residential treatment centre for alcoholism and addictions. • Trustee, Air New Zealand Environment Trust (2010–present) • Chairman,
Fred Hollows Foundation (2010–2014) • Trustee, Motu: Economic and Public Policy Research (2011–2015) • Board member,
NEXT Foundation (2014–present) • Chairman, Sustainable Seas
National Science Challenge (2015–present) • Board member,
Deep South National Science Challenge (2015–present)
Antarctica North & South Magazine wrote that “Rob Fenwick has had more impact on Antarctica than possibly any other New Zealander”. In 1993, Fenwick launched an international campaign to preserve the Scott and Shackleton Antarctic huts. He was later elected and served as chairman of the
Antarctic Heritage Trust from 1996 to 2007. Following the completion of the project, Fenwick was invited to chair the board of Antarctica New Zealand. During his term the agency constructed wind powered turbines to supply energy to the New Zealand and US research stations and the Hillary Science Centre was completed at Scott Base. In 2012 he established the privately funded Antarctic Research Institute – partnering with research agencies to expand climate change research on the continent. == Honours and awards ==