Leigh Day

Martyn Day

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Martyn Day is Senior Partner at Leigh Day. He has a leading reputation for international, product liability and environmental claims, often as group actions. He heads a team of lawyers who represent claimants in the UK and overseas in cases against corporate or governmental bodies.

Professional Memberships

Board member of Greenpeace Environmental Trust, Leadership Council Member of Earthrights International, Former Chair of the Chem Trust, Former Chair of Greenpeace UK


From Colombotti & Partners, moved to Clifford and Co., then went to Bindman & Partners. In 1987, set up Leigh Day with Sarah Leigh OBE.


Co-author of ‘Personal Injury Handbook’, ‘Toxic Torts’, 'Multi-party Actions’ and ‘Environmental Action: a Citizens Guide’. In 2004 co-authored a report with WWF and the Environmental Law Foundation, ‘Environmental Justice’. Martyn regularly addresses lectures, seminars and media on environmental and justice issues.


Playing tennis, watching Arsenal, getting out to the theatre as often as time allows.