Our team

Key team members from across our offices and entities.


Management team

Tim Ash Vie, Director of the Under2 Coalition Secretariat

Tim Ash Vie joined us in September 2017 as Director of the Under2 Coalition Secretariat. The Under2 Coalition is a leading, international network of subnational governments that have committed to ambitious climate action, for which we act as Secretariat. 

More about Tim.

Helen Clarkson, CEO

Helen joined the Climate Group in 2017 as Chief Executive Officer. In addition to leading our growing Climate Group team, she sits on the board of the We Mean Business Coalition , chairs the Finance & Audit Committee for the Sustainable Development Capital Energy Efficiency Income Trust, and is on the Mission Council for Pukka Herbs.  

More about Helen.

Libby Ferguson, Director of Policy and Knowledge

Libby is Director of Policy and Knowledge at the Climate Group and leads its work supporting governments and businesses to take decisive action on climate, share best practices and influence global policy. Prior to this, Libby led the Climate Group’s global work with state and regional governments, including the establishment of the Under2 Coalition. 

More about Libby.

Luke Herbert, Director of International Communications

Luke's previous role was at Madano, the integrated communications consultancy, where he was Director, working with multinational energy businesses and industry. Prior to that, he spent seven years as Head of Government Affairs at Jaguar Land Rover, focusing on UK and international stakeholder issues.

More about Luke.

Yuming Hui, China Director

Yuming is an expert in China's sustainability and environment policy, with over two decades of experience. He manages our operations in China and leads the overall strategic development in the region.

More about Yuming.

Ana Mates, Chief Operating Officer

Biog to follow.

David Mole, Director of Fundraising

David Mole is  our Director of Fundraising, where he leads fundraising strategy and income generation. 

More about David.

Alex Moore, International Finance and IT Director

Alex joined The Climate Group in 2021 as our International Finance and IT Director. 

More about Alex.

Mike Peirce, Corporate Partnerships Director

Mike leads our portfolio of global campaigns that are designed to secure climate commitment and action from the world’s most influential companies: from growing demand for renewable energy (RE100), electric vehicles (EV100) and low carbon steel (SteelZero), to investing in smart energy systems (EP100) including cooling technologies and LED lighting. 

More about Mike.

Divya Sharma, Executive Director, India

Divya is an international climate and urban development expert, specialising in climate resilience and urban development planning with almost 20 years’ experience operating throughout India and internationally.

More about Divya.

Department leads

Key department leads.

Danielle Bidos, Head of Sponsorship

Danielle leads Climate Group’s international sponsorship strategy and income generation. She specialises in designing, and implementing world leading partnerships and opportunities to showcase organisations as leaders in climate action.

More about Danielle

Christopher Brown, Commercial Strategy Lead

Chris has over 25 years’ experience working in international development and commercial business, previously serving as a Senior Business Development Manager for UNICEF UK, Head of Client Relations for Education Africa, running his own volunteering organisation placing teachers in Madagascar and a fair stint in the world of commercial business publishing.

More about Chris.

Leah Carter, Head of Events (Interim)

Leah is a multi-award winning, senior events professional with over 15 years’ project management experience. Leah’s knowledge stems from having worked for a number of high profile organisations across various sectors. She also has ample experience in planning international events, having delivered events in six of the world’s continents, in over 35 countries.

More about Leah.

Ruby Chorbajian, Head of Development, UK & Europe

Ruby leads our UK and Europe development team. The team is responsible for generating philanthropic funding from governments, foundations and individuals to fund climate action around the world.

More about Ruby

Nicol Forster, Head of Global Governance

Nicol oversees our global governance and is responsible for the efficient administration of the organisation and its compliance with all statutory and regulatory requirements. She's been with the Climate Group since its inception and has assisted with its growth operationally and administratively over the years.

More about Nicol.

Margot Gould, Head of US Fundraising

Margot is a strategic partnerships, development, and communications professional with nearly a decade of experience in both the public and private sectors. Throughout her non-profit and social responsibility career, she has raised over $15M in both public and private funding and established year-over-year revenue growth in all her organisations. 

More about Margot.

Nehmat Kaur, Head of Global Government Relations

Nehmat is a climate and energy policy expert based in London. She joined the Climate Group from the Natural Resources Defense Council where she was India Representative for five years, leading the work on renewable energy and finance.

More about Nehmat.

Kemal Kelly, Head of Technology

Kemal is responsible for providing strategy, oversight, and support for all The Climate Group's IT resources and technology implementations, as well as the administration of the back-end infrastructure across our global offices.

More about Kemal.

Sam Kimmins, Head of RE100

Sam is Head of RE100 which brings together the world's most influential companies committed to 100% renewable power. He has 20 years’ experience leading sustainability projects in the shipping, aviation, food, construction and NGO sectors. 

More about Sam.

Adam Lake, Head of Climate Week NYC

Adam is Head of Climate Week. Climate Week NYC is the biggest Climate Week on earth, and brings together international leaders from the worlds of business, government and the sector to accelerate climate action, taking place annually to coincide with the United Nations General Assembly.

More about Adam.

Stephanie Mackrell, Head of Corporate Communications (Interim)

Stephanie joined the Climate Group in 2020 as Interim Head of Corporate Communications, and she is responsible for the organisation’s profile across its initiatives, as well as the brand, marketing and digital team. 

More about Stephanie


Atul Mudaliar, Head of Business Initiatives, India

Atul is the Head of Business Initiatives at the Climate Group in India. He leads India’s strategy to drive powerful networks of corporations to take ambitious climate commitments and action on renewables, energy efficiency and electric mobility.

More about Atul


Nazneen Nawaz, Head of Media and Corporate Communications

Nazneen has over 14 years of experience working in communications, both in-house and in consultancy, across a range of high profile commercial and not-for-profit organisations including the likes of Oxfam, Natural History Museum, The Shard and Chelsea Flower Show to name a few. Most recently, she was Head of Media for Arts Council England.  

More about Nazneen.

Louisa Plotnick, Head of Programs, North America

Louisa Plotnick is the Head of Programs for North America at the Climate Group.Louisa joined the Climate Group in August 2019. She currently works to deliver global impact across the Climate Group’s business action campaigns, RE100, EP100, EV100 and the Under2 Coalition to shift to a net zero economy.

More about Louisa

Jebi Rahman, Head of Transparency & Pathways

Jebi is currently the Head of Transparency & Pathways at the Climate Group, steering the Under2 Coalition Secretariat’s accountability and long-term decarbonisation workstreams. She joined the organisation in September 2018 as Team Lead for the Climate Footprint Project, leading a consortium of partners to support governments in developing and emerging economies.

More about Jebi.

Sandra Roling, Head of EV100

Sandra is head of our global electric vehicles initiative EV100, a global leadership platform bringing together major companies committed to accelerating the switch to electric transport to make it ‘the new normal’ by 2030. She also leads the development of our broader work on electro-mobility and clean transport.  

More about Sandra.

Mandy Simmons, Head of Events

Mandy has 14 years event management experience delivering multifaceted, international events for multiple sectors including healthcare, finance and pharmaceutical. In her most previous role she designed and implemented a new events strategy that enabled significant growth and cemented partnerships for the organization.

More about Mandy.

Tarun Tandon, Head of Operations and Finance, India

Tarun heads the operations and finance team in India. She has got an illustrious career in the non-profit sector spanning over two decades. She has handled and led functions like finance, operations, HR and even partnerships management across organizations such as The Aga Khan Foundation, PATH, Confederation of Indian Industry (CII) and India HIV/AIDS Alliance. 

More about Tarun.