Peter Barnett joined our London office in April 2018 in ClientEarth’s climate programme, using strategic litigation to fight climate change and drive the clean energy transition.

Peter’s work focuses on litigation against companies and financial sector actors to drive greater integration of climate-related risk into corporate governance and decision-making.


Prior to joining ClientEarth, Peter practised at specialist disputes firm Boies Schiller Flexner in London and Russell McVeagh in New Zealand. In private practice, Peter acted for hedge funds, investment banks and other institutional investors in financial litigation and international arbitration. Peter has also represented NGOs and public sector bodies in human rights and other public law litigation and in advocacy before UN treaty bodies. He has a particular interest in the use of strategic litigation to advance social and environmental causes, and has published and presented on strategic human rights litigation in New Zealand and internationally.


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

Effective management of climate risk will play a critical role in driving the low-carbon transition and ensuring our environment is protected for future generations. It is immensely rewarding to join ClientEarth’s work in this rapidly developing area.

Peter is working on