Head of Joint Programme Strategy
United States

Julie Ciardullo is the Head of Joint Programme Strategy, where she is responsible for driving strategic development and implementation of the C40 x GCoM Joint Programme. Before joining C40, Julie spent 10 years working for the Los Angeles Mayor’s Office, where she was most recently appointed the Director of Climate Resilience. Prior to that, she was a Senior Policy Advisor and the Director of the Office of the C40 Chair during Mayor Eric Garcetti’s term as Chair of C40.

Julie began her career as an attorney, practising corporate law at Kramer Levin Naftalis & Frankel LLP in New York City, and later, served as a fellow at the Sabin Center for Climate Change Law. She received her J.D. from Columbia Law School and her B.A. in Political Science and International Relations from UCLA.

Senior Manager, Steering Committee and Chair's Office

Rebecca works in the Political Strategy and Leadership Support department and is the C40 Steering Committee Senior Manager responsible for supporting the Office of the C40 Chair by managing the processes of the Steering Committee. Prior to this, Rebecca was the Deputy Managing Director of the political organisation STRING, bringing together European cities and regions for sustainable infrastructure and sustainability. She has also worked for the Swedish/Danish cross-border cooperation the Oresund Committee and has experience in transport planning, strategy and stakeholder management from Newcastle City Council in the UK.

Rebecca’s academic background is in political science, and she has a Master’s degree from Lund University in Sweden and a Bachelor’s degree from the University of Northumbria in the UK.

Senior Executive Assistant to the Executive Director
South Africa

Ujen is the Senior Executive Assistant to the Executive Director. Based in Johannesburg, Ujen manages access to the Executive, and provides a diverse range of highly skilled and confidential support to the Executive, and Political Strategy and Leadership team.

Prior to joining C40, Ujen managed the Executive Office of Democracy Works Foundation. At Action Aid International, Ujen was part of the Executive Office working in Governance and Leadership Development.

Ujen has an Honours Degree in Social Development Studies and presently completing his Masters Degree in Development Studies.

Head of Communications and Press Secretary to C40 Chair
United Kingdom
Zermina Toghey - Press Secretary, C40 Chair

Zermina is the Head of Communications and Press Secretary to C40 Chair London Mayor Sadiq Khan and is part of the Political Strategy and Leadership team. She works closely with the Communications and Events team and is based in London, UK.

Zermina is a key connection point between C40 and the London Mayor’s Office, where she leads on developing and executing the Chair’s communications strategy. She leads on opportunities to further the reach and influence of the C40 Chair, raising his profile as a climate leader locally, nationally, and globally, showcasing the positive impact of his work as Chair and as Mayor of London.

Prior to joining C40, Zermina led environment communications on the Economic Development, Housing, Land and Environment team at London’s City Hall. Here, amongst other things, she led the communications strategy for the expansion of the world’s first 24 hour Ultra Low Emission Zone, the Mayor’s presence at COP26 and the launch of the Mayor’s climate campaign.

Prior to City Hall, Zermina worked in the communications team at the Department for Environment, Food and Rural Affairs (Defra). Zermina holds an undergraduate degree in Law from City University London.

Head of Chair’s Office, Diplomacy
United Kingdom
Uma Kumaran - Senior Manager, Diplomacy for C40 Chair

Uma is the Head of Diplomacy in the C40 Chair’s Office and is part of the Political Strategy and Leadership team. She is based in London, UK.

Uma is a key connection point between C40 and the London Mayor’s Office where she works on developing the Chair’s diplomacy strategy and manages all diplomacy-related communications between the Chair’s staff and C40 teams. Uma works in close collaboration with C40’s diplomacy team to build strong relationships with international city networks, the UN Secretary General’s Office and the UNFCCC on behalf of the Chair.

Prior to joining C40 in 2022, Uma was Deputy Director of Parliamentary Affairs for the Leader of the Opposition in the UK and is experienced in high-level political advisory, having worked in Government and as Senior Advisor to the current Mayor of London. She has also led national political campaigns including for general and local elections. Uma holds a Master of Science degree in Public Policy and a Bachelor’s degree in Politics.

Executive Office Project Manager

Julieta is C40’s Executive Office Project Manager for the C40 Inc Board, its Finance and Audit Committee and the UK Board, working on the C40 Internal Communications strategy and various special projects requiring coordination from the Executive Office. Julieta initially joined C40 supporting the 2022 C40 World Mayors Summit delivery and is based in Buenos Aires, Argentina.

Her work experience is related to sustainability, working for the City of Buenos Aires with a special focus on healthy mobility, city development and the implementation of cooperation projects with international organisations and strategic stakeholders in the public and private sectors.

She holds a degree in International Relations (USAL – Buenos Aires) and is working on a Master’s Degree in Urban Economics (UTDT – Buenos Aires).

Executive Director's Office Coordinator
South Africa

Neo serves as the Executive Director’s Office (EDO) Coordinator at C40. In this position she is responsible for the day-to-day team operations within the EDO and Governance department, ensuring all necessary infrastructure is in place to share information efficiently within the team as well as with C40 colleagues and stakeholders. Neo also supports the coordination of C40 Board and Steering Committee processes, strategic funder engagement, and coordinates all internal communications.

Before joining C40, Neo worked for GenderCC Southern Africa (Women for Climate Justice) and interned at Doctors Without Borders (MSF) Southern Africa. In her respective roles, she supported and coordinated various research and advocacy activities focused on affordable medicine access and the gender-climate change nexus.

Neo holds a BA Honours degree in International Relations from the University of the Witwatersrand, South Africa.

Senior Manager, Executive Engagement & Strategic Projects
United Kingdom

As Senior Manager of Executive Engagement & Strategic Projects, Alice spends half her time managing projects on behalf of the Executive Office and half her time managing C40’s Global Leadership Board. Alice’s current projects include managing C40’s Award programs, C40’s Opportunity Fund, mayoral briefings, and Global Leadership Partners strategy, as well as supporting strategic funder liaison and the delivery of priority global milestones.

Prior to her current role, Alice worked as a Strategic Projects Manager, Stakeholder Engagement Office and Intern in the Executive Office. During this time, Alice led the successful 2022 C40-Bloomberg Philanthropies Awards programme as well as coordinating other projects such as C40’s COVID-19 response, the Future is Public Transport campaign launch, Board and Steering Committee processes and the delivery of the 2019 C40 World Mayors Summit in Copenhagen.

Alice graduated from the University of Manchester in 2019, having studied Geography and spending a year studying at the University of British Columbia, Vancouver. She is currently studying at UCL Bartlett for a MSc in Urban Planning Masters.

Director of the Executive Office
United Kingdom

As Director of the Executive Office, Pauline is responsible for liaising with the Bloomberg Philanthropies environment team on projects and activities related to C40 and Michael Bloomberg’s position as C40 Board President.

Pauline initially joined C40 as Project Manager for the Women4Climate Tech Challenge, a global competition designed to promote and support innovation and climate solutions from women in the tech community. She started her career in e-commerce, where she worked as a localisation and operations manager for six years, before taking part in the On Purpose leadership programme to transition her career into the environmental impact sector.

She since worked with sustainability leader and carpet manufacturer Interface, designing and implementing circular solutions to reduce waste, and developed a new portfolio of services for the innovation foundation Nesta.

Governance Editor

As the Governance and Executive Director’s Team Editor, Peggy’s role is to ensure that C40 produces the highest standards of materials for C40 leadership, partners and funders. Prior to C40, Peggy held a wide variety of roles in refugee-related non-profits in the UK and Greece, where she brought her experience in freelance writing and editing in the legal and academic fields to the humanitarian sector. Peggy has an MA in Latin American Studies (with an emphasis on indigenous rights and human rights) and is about to complete an MA in Convergent Journalism. She is currently learning German and the art of ceramics.

Research Manager
United Kingdom
Picture of Sarah Lewis

Sarah serves as Research Manager, supporting the Executive Director with research projects, speeches, articles and blogs. Sarah joined C40 after completing an MSc in Sustainable Resource Economics, Transitions and Policy at University College London. Her dissertation focussed on city-level energy projects. She also holds a BA in Middle Eastern Languages from the University of Manchester and has lived and worked in a number of global cities, including Amsterdam, Tel Aviv, Jerusalem and Alexandria. In her spare time, Sarah enjoys hiking and reading.

Managing Director, C40 Centre for City Climate Policy and Economy

David Miller is the Managing Director of the C40 Centre for City Climate Policy and Economy.

Mr. Miller was Mayor of Toronto from 2003 to 2010 and served as Chair of C40 Cities from 2008 until 2010. Under his leadership, Toronto became widely admired internationally for its environmental leadership, economic strength and social integration. He is a leading advocate for the creation of sustainable urban economies.

Mr. Miller has held a variety of public and private positions and served as Future of Cities Global Fellow at Polytechnic Institute of New York University from 2011 to 2014. He has an Honorary Doctorate from the University of Waterloo in Environmental Studies, an Honorary Doctor of Laws from York University and is currently Executive in Residence at the University of Victoria. He is the author of ‘Solved, how the great cities of the world are fixing the climate crisis‘, (University of Toronto Press).

David Miller is a Harvard-trained economist and professionally is a lawyer. He and his wife, lawyer Jill Arthur, are the parents of two children.

Managing Director, Governance & Executive Engagement
United Kingdom

Anna serves as the Managing Director of Governance & Executive Engagement. Anna supports the Executive Director and oversees relationships with key C40 strategic funders. In particular, she provides support to the Executive Director in managing the Board of Directors, supporting the C40’s Chair’s Office functions and managing the Governance and Fundraising teams. Before joining C40 in 2015, Anna spent seven years living and working in East Asia, including Hong Kong, Beijing, and Chengdu. Prior, Anna worked in the Mayor of London’s Office for the climate change and sustainable transport adviser, and was part of the team who developed London’s first Climate Change Action Plan. Anna holds a BA in Philosophy and Political Science from the University of Birmingham, UK and is learning to speak Mandarin Chinese.

Executive Director
United Kingdom
Mark Watts

Mark’s aim as Executive Director is to ensure that C40 Cities is equally focused on science-based climate action and political leadership for climate justice. C40 has grown dramatically in scope and ambition under Mark’s tenure and its 300 staff now support nearly 100 of the world’s leading cities, representing around 700 million residents.

Prior to joining C40 Cities, Mark was a director at pioneering engineering and design firm, Arup; and previous to that role he was a senior adviser to the Mayor of London. Outside of work he can usually be found either up a mountain or proclaiming the discovery of a great new band.