Leigh Day

Leigh Day operates a claimant-focused practice, advising on international multi-party actions arising from environmental damage. Co-founder Martyn Day specialises in international environmental and product liability claims, with a particular emphasis on group actions. Daniel Leader focuses his practice on business and human rights, with significant experience in complex group litigation, mass tort claims, and parent company liability. Tessa Gregory advises on matters concerning wildlife and habitats, particularly in the context of planning decisions and development consenting, frequently representing claimants challenging environmental impacts. Rowan Smith specialises in judicial review, with a strong focus on environmental, planning, and human rights law. Ricardo Gama provides further expertise on environmental judicial review claims.