CMS
CMS has a leading international climate change and sustainability practice that supports businesses, investors, and governments in navigating the global net-zero transition. The firm’s cross-practice climate offering combines deep expertise in energy and infrastructure, corporate and finance law, ESG compliance, and carbon markets. CMS advises clients across the full spectrum of climate-related matters, including renewable energy development, sustainable finance, supply-chain decarbonisation, carbon accounting, and climate risk governance.
Dr. Done Yalcin is a Partner at CMS, focusing on energy transition, environmental regulation, and climate-related investment. Drawing on her background in international climate law and environmental policy, she advises corporations, development institutions, and governments on implementing Paris Agreement obligations, structuring carbon credit transactions, and integrating sustainability into business strategy. Her work bridges regulatory frameworks and market mechanisms, helping clients design legally robust pathways to achieve measurable climate outcomes.
Gilbert+Tobin
Gilbert + Tobin has a market-leading climate change and sustainability practice that supports organisations in responding to the opportunities and challenges of the net-zero transition. The firms’ climate and sustainability practice draws on its strengths in corporate law, energy, finance, project development, and regulatory compliance, and it assists clients with decarbonisation initiatives, renewable and new-energy project development, integration of climate considerations into investment and operational decision-making, climate-related disclosures, environmental and carbon markets, and carbon abatement projects.
Ilona Millar is a Partner at leading Australian law firm Gilbert + Tobin, where she heads the firm’s Climate Change and Sustainability group. She advises clients on decarbonisation strategy, renewable energy deployment, and new energy technologies, and climate-related financial disclosure obligations. Ilona is recognised for her deep expertise in international climate law, carbon contracts in compliance and voluntary markets, and climate finance, and has worked extensively in developing innovative climate-finance structures, including advising 18 Pacific Island countries on the establishment of the Pacific Resilience Facility.
DLA Piper
DLA Piper, a leading global law firm, offers the full spectrum of climate-related legal services including regulatory compliance, strategic advisory, voluntary sustainability initiatives, and dispute resolution. Firm has adopted an embedded approach to sustainability where it has integrated Sustainability and ESG Pillars into different practice areas and believes in bringing systemic changes required for net zero transition through climate-conscious legal practice. DLA Piper provided legal advisory services during COP26 and COP28, and has represented developing countries in multilateral climate negotiations.
Jesse Medlong is a sustainability lawyer in the Seattle office of DLA Piper, where his practice focuses on the legal compliance, advisory, voluntary sustainability initiatives, legal representation, and dispute resolution associated with global sustainability issues, including climate change, plastic pollution, and supply-chain impacts. Jesse brings a unique international and policy-driven perspective to his work, drawing on a decade of experience as a negotiator for a developing country in the UNFCCC negotiations. His practice spans across federal, state, and local laws.
Cornerstone Barristers
Founded in 2023 by Estelle Dehon KC, Cornerstone Climate is a cross-disciplinary legal practice within Cornerstone Barristers focusing on climate litigation, regulatory compliance, and strategic climate-related legal advice. With expertise spanning planning, environmental, commercial, regulatory, and public law, Cornerstone Climate provides carbon-literate, high-impact legal solutions to clients at all levels, from government agencies to private enterprises and NGOs. Cornerstone Climate’s barristers have played pivotal roles in landmark climate cases, including the UK’s 2024 Carbon Budget Delivery Plan challenge and the Finch litigation in the Supreme Court. Chambers is also involved in one of the world’s largest private environmental cases, the Mariana case concerning the Fundão Dam collapse in Brazil, a precedent-setting case for future climate litigation trends.
Hannah Taylor is a barrister at Cornerstone Barristers (called 2023), with a strong focus on environmental, planning, and public law. Hannah has worked on high-profile environmental and planning cases. Notably, she acted for more than 620,000 Brazilian claimants in Mariana-BHP case, which arose from collapse of the Fundão Dam, one of Brazil’s worst environmental disasters.
Robert Williams is a leading public law barrister (called 2008), and a founding member of the Cornerstone Climate. A widely recognised lawyer for his expertise in planning and environmental law, he has represented diverse clients on renewable energy projects (solar farms, wind farms, EV-charging infrastructure), judicial review, and the environmental impact assessments (EIA) linked to large developments.