ClientEarth is an environmental law charity, with offices in London, Brussels, Warsaw, Berlin, and Beijing. It was founded in 2008 by James Thornton. As lawyers and environmental experts, they use the law to hold governments and other companies to account over climate change, nature loss and pollution
In 2017, ClientEarth was named the most effective environmental group by green leaders. In 2012 BusinessGreen gave ClientEarth its NGO of the Year award. In 2013 ClientEarth was awarded the Law Society's LSA Award for Excellence in Environmental Responsibility.