Irwin Mitchell are the UK’s number 1 law firm for Personal Injury and Medical Negligence.

Chambers & Partners – accurate as of 2026

For Personal Injury, Chambers & Partners have awarded Irwin Mitchell more than three times as many Band 1 regional rankings across England and Wales as any other law firm. We are ranked Band 1 in seven regions: East Anglia, the South West, the South, the Midlands, the North West, Yorkshire, and the North East. The next closest law firms - Fletchers, Hugh James, RWK, and Stewarts - each hold only two Band 1 regional rankings for Personal Injury.

For Medical Negligence, Chambers & Partners have awarded Irwin Mitchell three times as many Band 1 regional rankings across England and Wales as any other law firm. We are ranked Band 1 in six regions: East Anglia, London, Midlands, North West, Yorkshire, and North East). The next closest law firms – Fletchers and Fieldfisher - each hold only two Band 1 regional rankings for Personal Injury.

What is Chambers & Partners? Chambers & Partners is a globally recognised independent legal directory and leading research organisation. It annually ranks the world’s top law firms and lawyers through in‑depth independent research and analysis, helping clients identify the best legal talent. It is considered one of the most prestigious and influential authorities for assessing legal expertise and highly respected by clients, lawyers, and in‑house counsel.

Chambers’ rankings are the result of months of extensive independent research. They remain entirely independent of advertising influence and cannot be bought.

This includes:

• Detailed submissions from law firms
• Independent interviews and surveys with referees (clients and professional contacts)
• Assessment of recent work, technical legal ability, client service, and market reputation.

For the UK market, the Chambers UK Guide provides detailed coverage across 85 broad areas of law, including employment, personal injury, family, tax, and banking and finance.

Rankings are organised both by practice area and geographic region (for example, London, Midlands, South West), allowing clients to compare firms locally and nationally.

Firms and individuals are ranked into Bands, with Band 1 being the highest. A higher band indicates stronger market recognition, consistent quality of work, and positive client feedback.

Legal 500 – accurate as of 2026

For Personal Injury, Legal 500 has awarded Irwin Mitchell more than four times as many Tier 1 regional rankings across England and Wales as any other law firm. We are ranked Tier 1 in eight regions: East Anglia, London, North, North West, South East, South West, West Midlands, and Yorkshire. Next in line are Stewarts, Slater & Gordon, Leigh Day and Thompsons who only hold two Tier 1 rankings each for Personal Injury.

For Medical Negligence, Irwin Mitchell has the widest Tier 1 footprint for claimant work across England and Wales as any other law firm. We are ranked Tier 1 in eight regions: East Anglia, London, North, North West, South East, South West, West Midlands, and Yorkshire. Next in line are Fletchers, who only has five Tier 1 rankings for Personal Injury.

What is Legal 500?  Legal 500 is one of the world’s leading independent legal directories and client guide to law firms.  Founded in 1987, the Legal 500 now operates as a data‑driven platform benchmarking law firms and lawyers in over 150  countries worldwide.

Rankings are determined through a combination of:

• Firm submissions detailing recent work and strategy
• Client and peer feedback
• Editorial analysis by experienced legal researchers.

It focuses on strength of practice, track record, team depth, and client experience.

Practice areas are then ranked into tiers, with Tier 1 being the highest. A Tier 1 ranking reflects market‑leading capability and strong client endorsement.

NHS Resolution – accurate as of 2025

Data shows that in 2024/25, Irwin Mitchell received the most in legal fees from NHS Resolution for supporting patients with their medical negligence claims than its competitors.

We received £88.9 million, out of the NHS’s total £332 million spend on patient‑side legal costs, meaning that for every £4 the NHS spent, more than £1 came to us.

What is NHS Resolution? NHS Resolution is a public body that works on behalf of the NHS to handle complaints, concerns and legal claims fairly. It manages clinical negligence and other claims made against NHS organisations, responds to Freedom of Information requests, and uses learning from claims to help improve patient safety and protect NHS resources for patient care.

A Freedom of Information request published by NHS Resolution (data as of 31 March 2025) sets out the top 20 claimant law firms for clinical negligence claims in the 2024/25 financial year, based on both claimant legal costs paid and volume of claims. The data shows that total claimant legal costs paid to these firms amounted to £332 million.

While Irwin Mitchell recorded the highest total claimant legal costs, it did not handle the highest volume of claims. Irwin Mitchell dealt with 1,248 claims, compared with Fletchers, which handled a higher number of claims overall (1,309) but generated significantly lower total claimant legal costs.

Claimant Legal Costs include "damages" (patient compensation paid), and "claimant costs" (patient legal fees) paid by NHS Resolution.

The Lawyer – Personal Injury Courts – accurate as of 2025

The Lawyer has published that Irwin Mitchell represented more claimants in the Personal Injury Court than any other Law firm in 2025.

What is The Lawyer? The Lawyer is a leading UK-based legal industry publication that provides breaking legal news, data-rich analysis, expert commentaries, market intelligence and strategic insight for law firms, commercial lawyers, barristers and in-house counsel.

One of its distinctive products is the Litigation Claims Tracker, a searchable database that monitors every case in 15 UK High Courts since 2015, providing case volumes by law firm, claimant/defendant representation data and court activity analysis.

The Lawyer is long-established and widely trusted. Originally founded in 1987, it is one of the longest running and most authoritative legal business publications in the UK.