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Daniel Leader's Profile Picture
Daniel Leader combines a remarkable work ethic with a highly tuned legal brain.  He sees the "big picture" and has first-rate legal analysis. At the same time, his attention to detail is second to none. – Legal 500 2020
Daniel Leader offers a wealth of experience in mass tort claims and group actions, including notable experience in bringing claims on behalf of communities in the developing world.  "He's an outstanding environmental lawyer and really understands the law surrounding these claims extremely well," say sources.  – Chambers and partners 2020

Dan Leader is a barrister and partner at Leigh Day with over 13 years litigation experience.

He specialises in international human rights and environmental litigation with a particular focus on group actions by claimants from the developing world.  The principle areas of his practice include international human rights law, private international law, personal injury and environmental law.  Significant recent cases include:
  • Mutua & others v. the Foreign & Commonwealth Office [2013] (Colonial era torture of 5,000 Kenyans);
  • The Bodo Community v. Shell Petroleum Development Company Ltd [2013] (A claim by a community of 49,000 Nigerians for compensation and remediation of their land arising out of extensive oil spills in the Niger Delta); 
  • Al Rawi and others v Security Services [2011]  (Claims brought against the security services for complicity in torture by UK citizens and residents detained in Guantanamo Bay); 
  • Locally Employed Civilians v Ministry of Defence, DFID and FCO [2008-10] (Claims brought by more than 50 Iraqi civilians employed by the British Government during the occupation of Iraq for failure to protect them against attack by insurgents); 
  • The Baha Mousa Public Inquiry [2010] (A public inquiry, chaired by Sir William Gage, into the death and torture of an Iraqi civilian and the torture of nine other Iraqi civilians in the custody of the British Army in Basra, Iraq); 
  • Binyam Mohamed v. Jeppesen UK Ltd [2009-10] (A civil action against an aviation company alleged to have been complicit in his extraordinary rendition); 
  • Iraqi Civilian Litigation (2008), claims for damages by over 200 hundred Iraqi civilians arising out of allegations of torture by British troops, including a claim for Baha Mousa, tortured to death by soldiers.

Dan contributed to Leigh Day’s written submission to the Joint Committee on Human Rights Inquiry on Business and Human Rights in August 2016. Listen to John Gbei give evidence to the committee on 2 November 2016 when he talks about the effects of an oil spill in Bodo.

What people say about Daniel Leader

'Daniel Leader "comes from a very different angle, working a lot on the ground in countries." He is recognised in the market for leading high-profile cases, including at Supreme Court level.' - Chambers and Partners Global 2020

Key cases


  • Chambers and partners guide to the legal profession
  • Legal 500 Recommended Lawyer

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