CDSB Secretariat team

The Secretariat delivers CDSB's strategy and engages with stakeholders to provide decision-useful environmental information to markets.

Mardi McBrien – Managing Director

Mardi McBrien joined the Climate Disclosure Standards Board (CDSB) as Managing Director in 2011 following an eclectic career which has included roles such as President of an International Students Association, public-private partnership management, leading flagship environmental campaigns and projects including for the Campaign to Protect Rural England (and the author Bill Bryson), WWF-UK’s Earth Hour and carbon market policy for UK’s Department of Energy and Climate Change (DECC). Mardi is a member of the GRI Stakeholder Council, a trustee of the International Tree Foundation and a founding board member of WOCAN — Women Organising for Change in Agriculture and Natural Resource Management. Mardi holds a double degree in Forestry and Environmental Science from the University of Melbourne and a MSc in Agricultural Economics from SOAS, UCL. In 2013, Mardi was awarded environmental campaigner of the year by the Sheila McKechnie Foundation.

Twitter: @MardiMcB
Linkedin: Mardi McBrien

Lois Guthrie – Special Advisor (former Founding Director)

Lois has led the development CDSB’s Technical Work Program including the frameworks for reporting climate change-related and environmental information in mainstream annual reports. Lois also serves on the ACCA’s Global Forum on Sustainability and a member of Carbon Tracker’s Advisory Board. Previously, Lois was Technical Director of the Group Tax Department in Zurich Financial Services, Technical Director to the International Integrated Reporting Council (IIRC) and was part of the development of its integrated reporting framework and Technical Director where she was the author of the first CDP questionnaire.

Nadine Robinson – Technical Director

Nadine joined the Climate Disclosure Standards Board as Technical Director in 2017. Her work focuses on integrating climate and natural capital risks and opportunities into decision-making, legal and regulatory frameworks and corporate reporting. Nadine leads CDSB’s technical work programme, manages its expert technical working group and produces and delivers technical and advocacy materials.

Previously, she worked as an environmental consultant and lectured on environmental policy at Birkbeck College. As the Commonwealth Secretariat’s Climate Change Advisor and in her roles in Government and the United Nations Development Programme (UNDP), Nadine has advised on environment, climate change and sustainable development. She also worked as an asset finance solicitor. She has conceptualised and developed strategic initiatives on climate finance, biodiversity, the green economy, the sustainable development goals (SDGs), and energy-climate-poverty-linkages. Nadine holds a BA (Geography) from McGill University, and an MA (Geography) from York University (Canada).

Twitter: @NadineCDSB
LinkedIn: Nadine Robinson, MA 

Michael Zimonyi – Policy & External Affairs Director

Michael leads CDSB's policy and external affairs work. He joined CDSB in 2012 and focuses on policy and corporate engagement and oversees external affairs. Prior to joining CDSB, Michael has worked at a global pharmaceutical corporation and at the sustainability think tank Forum for the Future. Michael has a degree in Chemistry with Environmental Science from the University of Birmingham, studied Sustainable Finance at the University of Oxford and is a member of the Royal Society of Chemistry. He is also member of the EFRAG European Lab Project Task Force on Climate-Related Reporting and the UK Financial Reporting Council's Stakeholder Advisory Panel.

Twitter: @MikeZimonyi
LinkedIn: Michael Zimonyi

Gemma Clements - Project Manager

Gemma joined the CDSB Secretariat in 2016 to support CDSB's technical work. After working as an environmental educator for 4 years in London she completed an MSc in Environment and Development from the London School of Economics and Political Sciences. This role builds upon her interests in non-financial reporting, sustainability and climate change. She is currently managing the TCFD Knowledge Hub and leading on the Beyond Disclosure programme.

Twitter: @ClemGemma
LinkedIn: Gemma Clements

Lesley McKenna - Communications and Marketing Manager

Lesley joined CDSB in 2019. After graduating with a degree in International Business and Languages, Lesley began her career working with in-house marketing departments and digital marketing agencies in Ireland and Spain. From there she moved into conference production producing global C-suite innovation and investment summits focussed on solving the challenges of the food, water and waste sectors. She now heads up CDSB's communications and marketing activities furthering its mission to align environmental and climate information in the mainstream report.

LinkedIn: Lesley McKenna 

David Astley - Senior Project Officer

David joined CDSB in 2017 to support its research and technical work. He is currently focused on the Corporate Reporting Dialogue’s Better Alignment Project, working with the other key reporting organisations to create a more coherent and complementary reporting landscape. Previously he was the research and delivery lead on the collaborative Reporting Exchange project for CDSB. David holds a Masters in Earth Sciences from the University of Oxford.