Martyn Day > Leigh Day > London, England > Lawyer Profile

Leigh Day
Martyn Day photo

Work Department

Personal injury, group actions.


Martyn Day is the 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.


Trained Colombotti & Partners; qualified 1981; Clifford & Co; Bindham & Partners; founded Leigh Day & Co with Sarah Leigh OBE 1987. Publications include: co-author ‘Personal Injury Handbook’, ‘Toxic Torts’, ‘Multi-Party Actions’ and ‘Environmental Action: a Citizen’s Guide’; in 2004 co-authored a report with WWF and the Environmental Law Foundation entitled ‘Environmental Justice’. Regularly addresses lectures, seminars and media on environmental and justice issues.


Former chair, Chem Trust; former chair, Greenpeace UK, now board member, Greenpeace Environmental Trust.


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

Lawyer Rankings

London > Public sector > Civil liberties and human rights

Described as ‘synonymous with human rights‘, the practice at Leigh Day stands at the forefront of civil liberties and acts in landmark cases pertaining to international human rights, sexual violence issues, actions against the state, and immigration mandates. Jamie Beagent oversees the group, which is skilled in undertaking a range of domestic human rights work and representing NGO’s. Core members of the group include Daniel Leader. who is experienced in complex multi-party actions; privacy law expert Sean Humber, and Rosa Curling. On the international side, co-head Richard Meeran and Sapna Malik are the key contacts for cross-border human rights matters; the team has a specialism in acting in international abuse cases that cut across the fields of personal injury and human rights issues. Founder and senior partner Martyn Day is also a recommended contact.

London > Real estate > Environment

(Hall of Fame)

Martyn DayLeigh Day

Focusing exclusively on representing claimants, Leigh Day has ‘unparalleled expertise in pursuing large group claims concerning mass pollution events such as oil spills and leaks of toxic chemicals from industrial facilities in developing countries‘. The team specialises in class action lawsuits against oil and gas companies, as well as other international multi-party actions arising from environmental damage and domestic applications opposing planning decisions. Clients include local farming, fishing and indigenous communities living in proximity to mines, oil fields and toxic water supplies. A key name in the department is the experienced Martyn Day, who was instructed by over 1800 individuals in Zambia who allege that their lands and waterways have been seriously polluted by a copper mine owned by Vedanta PLC. Richard Meeran and Jamie Beagent jointly lead the practice.

London > Insurance > Product liability: claimant

(Hall of Fame)

Martyn DayLeigh Day

London > Insurance > Personal injury: claimant

(Hall of Fame)

Martyn DayLeigh Day

Leigh Day fields a ‘very committed team who take on difficult and unusual cases with great courage and success‘ and whose ‘strength in depth is extraordinary‘. Highly specialised departments complement the firm’s work on amputations, brain injuries and fatal accidents. Richard Meeran leads on international work, including ground-breaking cases against UK-domiciled multinationals, and abuse claims brought in foreign jurisdictions. Martyn Day is also a key name to note for this type of work. Daniel Easton and Harminder Bains jointly head up an industrial disease team which has assembled ‘the most experienced team of asbestos lawyers anywhere in the UK‘, and takes cases up to the Supreme Court. Grant Incles is at the helm of the specialist cycling and sports injuries department, and Sally Moore receives frequent instruction from the British Cycling Federation.