Peter Barnett leads ClientEarth’s expanding climate, energy and nature work in Japan and Southeast Asia. He works with governments, the private sector and civil society to accelerate the transition to a net zero carbon economy. He frequently speaks and writes on the role of corporate law in driving greater sustainability in business and investment decisions.

Peter joined ClientEarth in April 2018 and is currently based in our London office. He is also a Visiting Researcher at the National University of Singapore Asia-Pacific Centre for Environmental Law and EW Barker Centre for Law and Business.


Before joining ClientEarth, Peter specialised in international dispute resolution at Boies Schiller Flexner in London. He acted for financial sector clients in international arbitration, financial litigation and shareholder disputes in Europe, the United States and Latin America. He earlier practised as a senior solicitor in the litigation team at Russell McVeagh in New Zealand, acting for government and private sector clients in high-profile commercial and public law cases.


Peter holds an LLM from Harvard Law School and an LLB (Hons) and BCom (Finance) from the University of Otago. He is dual-qualified in New Zealand (non-practising) and England and Wales.

The transition to a net zero economy presents tremendous opportunities for clean and inclusive growth. Corporate law can play an important role in putting climate risks and opportunities at the centre of business decisions, helping create a sustainable future. It is immensely rewarding to contribute to ClientEarth’s work in this rapidly developing area.