Leigh Day

Leigh Day is a claimant-only law firm founded on 10th June 1987 and based in London and Manchester, with a team of over 500 people. The firm represents individuals and communities against governments and corporations, and does not act for defendants. Martyn Day has remained Senior Partner since the firm's founding.

Practice areas span medical negligence, personal injury, employment and discrimination, human rights, environmental law and international claims. The firm is also known for group litigation, including landmark group actions concerning vehicle emissions, data breaches, equal pay and corporate accountability.

Leigh Day is ranked in The Times top 100 law firms and is consistently ranked as a leading practitioner in Legal 500 and Chambers and Partners. Its stated mission is to combat injustice and improve access to justice for those denied it, irrespective of the power of the opposing party.