Leigh Day
Leigh Day is a UK-based claimant-side law firm with around 800 staff across ten UK offices, representing individuals and groups against large corporations, government bodies, and multinationals. Its core practice spans group claims, human rights, environmental law, employment, medical negligence, personal injury, and public inquiries.
- Company typePrivate
- Founded1989
- HeadquartersLondon, United Kingdom
- Headcount251–500
- GTM typeB2C
- OfferingServices
What Leigh Day does
Leigh Day is a UK-based claimant-side law firm founded in 1987 and headquartered in London, with approximately 800 staff across ten UK offices spanning London, Birmingham, Manchester, Bristol, Cardiff, Leeds, Liverpool, Newcastle, Plymouth, and Chesterfield. The firm delivers legal services across nine primary practice areas: group claims, environmental law, human rights, employment and discrimination, international/corporate accountability, medical negligence, personal injury, asbestos and industrial diseases, and consumer/competition/financial services. Its core proposition is representing individuals and communities against large corporations, government bodies, and multinationals, recovering over £1bn in compensation on behalf of clients over its 35+ year history. Active group actions range from gig-economy worker status claims (Uber, Just Eat, Bolt) to environmental pollution litigation (River Wye, PFAS) to public inquiries (Infected Blood, Covid-19, Undercover Policing).
The business model is professional services: revenue is generated from legal fees on a case-by-case basis, with a mix of private paying clients, legal aid funding, and conditional fee agreements (no win, no fee). Go-to-market is sales-led and claimant-driven, with client acquisition via direct enquiry through the website, phone, and email; referrals from existing clients, NGOs, and charities; and brand-led demand generated by press coverage in outlets such as The Guardian and Independent, plus podcasts, events, and a client-stories/review section. Distribution runs through the ten UK offices as direct-service points, with no disclosed channel partners, resellers, or technology product layer. The technology stack consists of standard case management, document management, and legal research tools, with no public API, software product, or proprietary platform. The firm is privately held by its partners, regulated by the Solicitors Regulation Authority (SRA no. 67679), and ranked Band 1 in 14 categories by Chambers and Partners and Top Tier by Legal 500.
Leigh Day firmographics
Firmographics- Name
- Leigh Day
- Legal name
- Leigh Day
- Website
- https://leighday.co.uk
- Company type
- Private
- Founded year
- 1989
- Operating status
- Operating
- Headcount range
- 251–500 employees
- Short description
- Leigh Day is a UK-based claimant-side law firm with around 800 staff across ten UK offices, representing individuals and groups against large corporations, government bodies, and multinationals. Its core practice spans group claims, human rights, environmental law, employment, medical negligence, personal injury, and public inquiries.
- Ownership category
- akta.pro rank
Leigh Day industry classification
Industry- Product category
- Legal Services
- NAICS
- Legal Services (5411), Offices of Lawyers (541110), All Other Legal Services (541199)
- SIC
- Services-Legal Services (8111)
- akta.pro primary industry
- Claims Advocacy & Loss Recovery Services (FSAEADAH)
Keywords
Where Leigh Day is headquartered
LocationHeadquarters
- HQ city
- London
- HQ country
- United Kingdom
- HQ region
- Europe
Offices10 records
Markets served
Leigh Day business model
Business model- GTM type
- B2C
- Offering type
- Services
- Cost components
- Personnel, Operations, Marketing or Sales, Technology or R&D, Infrastructure
Revenue model
- Legal Services Fees: Revenue generated from legal services provided to individuals and groups, including compensation claims, judicial reviews, inquests, and human rights cases. The firm works on a mix of private paying clients, legal aid cases, and conditional fee agreements (no win, no fee arrangements).
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Other | Legal services quoted on case-by-case basis |
Go-to-market motion1 record
Distribution channels1 record
Marketing channels5 records
Leigh Day product offering
Product offeringCore offering
Leigh Day is a UK-based claimant-side law firm that provides legal representation and advice to individuals, groups, and communities against large corporations, government bodies, and other powerful entities. The firm delivers legal services across practice areas including group claims, human rights, environmental law, medical negligence, personal injury, asbestos/industrial disease, employment and discrimination, international cases, and consumer/competition claims, on a mix of private paying, legal aid, and no win no fee arrangements.
Product overview
Leigh Day is a law firm offering comprehensive legal services across multiple practice areas, operating as a unified legal services platform rather than a technology product. The firm provides Group Claims (collective litigation against corporations and government), Environment (climate and pollution litigation), Human Rights (abuse, discrimination, prison rights, inquests), Employment (equal pay, worker status), International (corporate accountability, environmental damage abroad), Medical Negligence, Personal Injury, Asbestos and Industrial Diseases, and Consumer/Competition claims. The services are delivered through specialized legal teams rather than software products.
Differentiator
Problem solved
Functional benefit
Products and services
- Group Claims Collective legal action representing groups of individuals against corporations and government bodies, including vehicle emissions claims, data breach claims, worker status claims, environmental pollution claims, and financial mis-selling cases.
- Environment Environmental law services covering access to environmental justice, climate change and air pollution litigation, international environmental damage cases, fossil fuel extraction claims, major infrastructure challenges, planning advice, and wildlife conservation.
- Human Rights Human rights legal services including abuse and exploitation claims, children's rights, police misconduct, data protection, discrimination, prison rights, inquests, judicial review, public inquiries, immigration, sexual harassment, and gambling harm claims.
- Employment and Discrimination Claims Employment law services focusing on equal pay claims, retail equal pay, settlement agreements, and worker status claims for gig economy drivers including Uber, Addison Lee, and Bolt.
- International International legal services covering corporate accountability, cases against the British Government, international corporate espionage, environmental damage abroad, gender and sexual violence, modern slavery, security and human rights, workers' health and industrial disease, and whistleblowing claims.
- Medical Negligence Medical negligence services including brain injury, illness and disease claims, cerebral palsy, perineal tear injuries, misdiagnosis, practitioner negligence, spinal injuries, surgical claims, medical inquests, armed forces medical negligence, and birth injury claims.
- Personal Injury and Cycling Claims Personal injury legal services covering cycling accidents, amputations, brain injuries, burn injuries, child injuries, clinical trials, fatal and serious accidents, faulty consumer products, travel accidents, food safety claims, spinal injuries, workplace accidents, road injuries, and foodborne illness outbreaks.
- Asbestos and Industrial Diseases Asbestos-related legal services including mesothelioma claims, asbestosis claims, workplace cancer claims, pleural thickening claims, silicosis and pneumoconiosis claims, industrial disease litigation, and overseas asbestos claims.
- Consumer, Competition and Financial Services Claims Consumer law and competition litigation services including competition law class actions, financial services mis-selling claims, shareholder claims, and consumer law disputes.
Quantifiable outcome
- Recovered over £1bn in compensation on behalf of clients over 35+ years
- +2 more outcomes
Companies that use Leigh Day
Customer profileNamed customers8 records
Segments3 records
Ideal customer profiles3 records
Leigh Day technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Leigh Day partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- Mishcon de ReyacoreBoth Mishcon de Reya and Leigh Day are involved in separate PFAS-related legal proceedings in the UK, representing affected communities in chemical pollution cases.
Scale indicators9 records
Recent moves6 records
Expansion highlights5 records
Leigh Day competitors and assessment
Company assessmentDirect peers
- Bindmans LLP: London law firm with a near-identical claimant-side focus on human rights, civil liberties, inquests and judicial review. Closely comparable to Leigh Day's human rights department in client base, case types, and pro-access-to-justice mission.
- Hodge Jones & Allen: UK claimant-side firm specialising in personal injury, medical negligence, human rights and group actions. Very similar practice mix to Leigh Day and a direct competitor for the same pool of individual claimants against large defendants.
- Mishcon de Reya: Major London-headquartered law firm with strong claimant-side group litigation, human rights and corporate accountability work; already identified as a co-litigant with Leigh Day in UK PFAS proceedings, making it the closest like-for-like comparator by practice mix and client profile.
- Simpson Millar: UK claimant-side firm with significant personal injury, medical negligence and employment practices, including group litigation. Comparable mid-sized claimant model with overlapping practice mix to Leigh Day's PI/employment divisions.
- Slater and Gordon: UK claimant-side law firm with a strong personal injury, employment and group litigation practice. Directly comparable in conditional fee arrangements, advertising-driven lead generation, and mass-claim handling against large corporates.
- Thompsons Solicitors: UK firm founded to represent trade union members in personal injury and employment claims, making it one of the closest comparators to Leigh Day's employment and personal injury work on a claimant-only, social-justice orientation.
- Milners Solicitors: Northern England-based claimant-side firm active in personal injury, medical negligence and asbestos-related cases. Smaller scale than Leigh Day, but operates in the same CFA-driven claimant segment with overlapping niche practices (e.g., asbestos and industrial disease).
Broad incumbents
- Irwin Mitchell: Larger full-service UK law firm with a market-leading claimant personal injury and clinical negligence practice. Wider service portfolio than Leigh Day, but directly comparable on the personal injury and medical negligence work that makes up a major share of Leigh Day's revenue.
Market position
Strengths5 records
Weaknesses4 records
Competitive moat4 records
Key risks6 records
Key highlights7 records
Customer concentration
Leigh Day social profiles
Digital presenceLeigh Day financial estimates
Financial estimateRevenue estimate
Valuation estimate
Leigh Day leadership team
Management profileNumber of profiles
Profiles12 records
Leigh Day funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Leigh Day M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Leigh Day
What does Leigh Day do?
Leigh Day is a UK-based claimant-side law firm that provides legal representation and advice to individuals, groups, and communities against large corporations, government bodies, and other powerful entities. The firm delivers legal services across practice areas including group claims, human rights, environmental law, medical negligence, personal injury, asbestos/industrial disease, employment and discrimination, international cases, and consumer/competition claims, on a mix of private paying, legal aid, and no win no fee arrangements.
Is Leigh Day a public or private company?
Leigh Day is a private company. It is classified as management employee owned and is currently operating.
When was Leigh Day founded?
Leigh Day was founded in 1989. It employs 251 to 500 people.
Where is Leigh Day based?
Leigh Day is headquartered in London, United Kingdom, in the Europe region.
How does Leigh Day make money?
One revenue line is on record: legal Services Fees.
Who are Leigh Day's main competitors?
Direct peers on record are Bindmans LLP, Hodge Jones & Allen, Mishcon de Reya, Simpson Millar, Slater and Gordon, Thompsons Solicitors and Milners Solicitors. Irwin Mitchell is listed as a broad incumbent.
Does Leigh Day have an API?
No public API is recorded for Leigh Day.
What industry is Leigh Day in?
Leigh Day's product category is Legal Services. Its primary akta.pro industry code is FSAEADAH, Claims Advocacy & Loss Recovery Services. Its NAICS code is 5411 and its SIC code is 8111.