Leigh Day

Sean Humber

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Practice Areas

Sean heads the firm’s human rights department and acts for individuals and campaign groups in a wide range of human rights and environmental law matters. He specialises in prison law matters, including judicial review challenges and compensation claims for clinical negligence, breach of human rights and disability, sex, age or religious discrimination. He also acts for individuals suffering injury caused by exposure to a variety of toxic substances, for individuals whose land has been affected by pollution and in judicial review challenges of regulatory bodies for failing to protect the environment. In addition, Sean also specialises in medical confidentiality matters and breaches of the Data Protection Act (DPA) as well as requests for information under the DPA and Freedom of Information Act.

Professional Memberships

Association of Prison Lawyers, Association of Personal Injury Lawyers, Member of Law Society Planning and Environmental Law Committee.


Sean has a degree in Biochemistry from Oxford University and previously worked in industry as a research scientist and then as a Campaigner for Friends of the Earth. After retraining as a lawyer, he worked as a trainee solicitor, assistant solicitor and now partner at Leigh Day and has headed the firm’s human rights department since 2012.