Our board

NIWA's Board of Directors is responsible to our shareholders (the New Zealand Government) for the strategic direction and operational performance of the company. 

Barry Harris is a company director with extensive governance and executive experience. Barry has held a number of chief executive roles including Environment Waikato, Greater Wellington Regional Council and Hamilton City Council. He was also a senior executive with Fonterra for five years.

Barry is currently chair of Food Innovation Waikato, Wintec, McFall Fuels and Agricultural Services Ltd. Barry is a director of DairyNZ, Primary ITO, WEL Networks Limited and OSPRI. He is also a member of the Waikato River Authority. Previous boards include CentrePort, RD1, AgResearch, International Nutritionals, Hamilton Riverside Hotels and Local Authority Shared Services.

Barry has a Masters of Agricultural Science (Honours) and lives in Hamilton.

Deputy Chairman

Nick is a chartered accountant and was Chief Executive and later Chairman of Deloitte in New Zealand. More recently, he was Deloitte’s Global Managing Partner of Sustainability and Climate Change Services and Global Chief Sustainability Officer, based in London. He has also served as Deloitte’s Global Chief Ethics Officer. Nick currently chairs the Middlemore Foundation for Health Innovation, is a member of the Westpac New Zealand Sustainable Business External Advisory Panel, and is co-opted onto the Finance and Audit Committee for Counties Manukau DHB.

Tracey has 15 years’ experience as CEO for large healthcare organisations in both Australia and the UK and has worked closely with businesses in the hospital, aged care and medical research sectors.

Tracey was Chief Executive of Imperial College Healthcare NHS Trust in the UK for three years from 2014 to 2017. Prior to that she was Chief Executive of St Vincent’s Health, the largest charitable hospital group in Australia.

She is a member of the Australian Institute of Directors and has held a number of governance positions with private and public organisations, including currently being a director of Abano Healthcare and Medibank Private Limited.

Tracey qualified as a doctor at the University of Melbourne. She later acquired a Masters in Health Administration from the University of New South Wales and a MBA from Harvard.


Mary-Anne Macleod was appointed as Chief Executive of the Bay of Plenty Regional Council in 2011, remaining in that role until resigning in 2018 to pursue a governance career. She had previously held a senior management position in the Council as Group Manager Strategic Development.

Prior to that Mary-Anne worked in Wellington for seven years holding several senior positions in central Government departments, including the Ministry for the Environment. She has also worked in the private sector in NZ and Europe in international consultancies specialising in environmental management and working in the oil and gas, and mining sectors.

Governance roles she has held include being a director of Bay of Plenty Shared Services Ltd (BoPLASS), Quayside, and an Executive Board member of the Tauranga and Western Bay of Plenty Economic Development Agency, Priority One.

Mary-Anne has a Masters of Earth Sciences (MSc), Geography and lives in Tauranga.



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(0800 746 464)