The Global Advisory Board plays an essential role in facilitating the high calibre of people and thought leadership that underpin the success of the Club. The role of the Global Advisory Board is to further the mission of The Hawthorn Club by providing strategic guidance to its overall direction.

Dame Fiona Woolf, DBE
Consultant, CMS Cameron Mckenna
Dame Fiona Woolf is an energy and infrastructure lawyer with CMS Cameron McKenna who has advised over 28 governments and the World Bank on energy reforms and infrastructure. She has 25 years’ experience in dealing with regulation, market design, implementation and major projects in the electricity industry – culminating in a CBE in 2002 for her contribution to the UK knowledge economy and invisible earnings. Much of her recent work has been for the World Bank on regional markets, regulation and infrastructure serving more than one country.

Lord Nicholas Stern
Chair of the Global School of Sustainability at the Grantham Research Institute on Climate Change and the Environment
Lord Nicholas Stern has held professorial positions at leading institutions, including his current role at the London School of Economics where he is IG Patel Professor of Economics and Government, Chair of the Global School of Sustainability at the Grantham Research Institute on Climate Change and the Environment. As a well-known British economist, his career spans senior roles in academia, international finance, and government, and is best known for shaping the modern economic case for climate action. Stern rose to global prominence with the 2006 Stern Review on the Economics of Climate Change, commissioned by the UK government, which reframed climate change as a profound market failure and argued that the costs of inaction would far exceed the costs of early, coordinated mitigation. His latest book (2025) is published by LSE Press as an open access publication, The Growth Story of the 21st Century: The Economics and Opportunity of Climate Action.
Alongside his academic work on development economics, risk, and public policy, Stern has played major leadership roles in global economic institutions, serving as Chief Economist of the World Bank, Chief Economist of the European Bank for Reconstruction and Development, and Head of the UK Government Economic Service as Second Permanent Secretary at HM Treasury.

Michael Liebreich
Founder, Bloomberg New Energy Finance
Michael Liebreich is Chairman and CEO of Liebreich Associates and Founder and Senior Contributor to Bloomberg New Energy Finance – the world’s leading provider of information and research on clean energy and transport.
He is a Visiting Professor at Imperial College, a member of the UK Department for International Trade’s Capital Investment Advisory Board and most recently joined Sustainable Development Capital LLP (SDCL) as a Senior Adviser. In June 2019 Michael was honoured to accept an invitation to join the IEA’s Global Commission for Urgent Action on Energy Efficiency, a newly formed independent panel focusing on key policy actions that can be undertaken by countries around the globe.
Until recently he was a long-standing board member of Transport for London and continues to be a member of the high-level group for the UN’s Sustainable Energy for All initiative.
Michael serves on too many advisory boards to list, he is a prolific speaker and writer and is known to make the occasional angel investment. His ongoing philanthropic work is admirable, and finally, Michael also skied for Great Britain at the 1992 Albertville Olympics.

Nancy E Pfund
Founder, Managing Partners, DBL Partners
Nancy E. Pfund is Founder and Managing Partner of DBL Partners, a venture capital firm whose goal is to combine top tier financial returns with meaningful social, environmental and economic returns in the regions and sectors in which it invests. Nancy is also the Founder of DBL Investors. As a leading player in the growing field of impact investing, DBL has helped to reveal the power of venture capital to promote social change and environmental improvement. Ms. Pfund currently sponsors or sits on the board of directors of several companies, including; Farmers Business Network, The Muse, Advanced Microgrid Solutions, Off Grid Electric, Primus Power, and, prior to their public offerings, Tesla Motors and Pan¬dora.
Ms. Pfund was featured #17 in the 2014 FORTUNE Inaugural World’s Top 25 Eco- Innovators; and appeared on Fast Company’s 2016 List of Most Creative People in Business. She is also a co-author on a number of widely cited reports, such as “What Would Jefferson Do? The Historical Role of Federal Subsidies in Shaping America’s Energy Future”. Ms. Pfund received her BA and MA in anthropology from Stanford University, and her MBA from the Yale School of Management.

Mallika Ishwaran
Group Chief Economist, Shell International
Mallika is Shell’s Chief Economist. She advises on macroeconomic issue, economic trends, and related policy matters to shape Shell’s log-term scenario outlooks. She leads strategic engagements on energy transitions with national and city governments across the world, notably a multi-year collaboration with the Chinese government. Mallika also advises on Shell’s strategic policy and advocacy approach to support the company’s energy transition strategy. She sits on a range of external advisory boards.
Prior to joining Shell, she was Deputy Director at the Department for Environment, Food and Rural Affairs responsible for evidence and analysis across the environment, food, and green economy portfolio. She has held senior positions across the UK Government, including at the Cabinet Office as Head of Policy Analysis for the 2009 G20 London Summit. Before that, Mallika worked in senior economics and policy roles int eh USA.
Mallika holds a PhD and M.S. degrees from Carnegie Mellon University, and a BA from St. Stephen’s College, Delhi University.