Green Ambassadors: United Kingdom 2025

As global head of ESG at Simmons & Simmons, Sonali Siriwardena leads the firm’s strategy on environmental, social, and governance matters across all practice areas and offices. Her deep expertise in ESG allows her to support clients, including those with a global presence, in navigating the complex regulatory and policy landscape; she advises them on regulatory developments and risks, while also helping them leverage business opportunities in the rapidly evolving ESG space.

Beyond her legal work, Siriwardena holds key leadership roles in several ESG-focused organisations. She is a member of the UK Financial Conduct Authority’s ESG Advisory Committee, helping shape the UK’s ESG regulatory framework. She also serves as a board member of the UK Sustainable Investment and Finance Association (UKSIF) and the Blue Marine Foundation (BMF), a leading ocean conservation charity, and is an active member of the City of London Law Society (CLLS) ESG Committee.