Company lists · Data refreshed August 2026
Top 25 Law firms based in the United Kingdom
This directory lists 5,017 law firms based in the United Kingdom, with 194,283 professional contacts and 101,813 email addresses. As of August 2026, London is the single most-represented city among the companies listed.
Law firms are professional service organizations that provide legal advice, representation, and related services through licensed attorneys. This list covers companies that provide legal advice, legal representation, or related legal services through licensed attorneys. Ranked by team size, largest first. Data current as of August 29, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest law firms based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 6,746 | ||||
“Linklaters is a leading global law firm, supporting and investing in the future of our clients wherever they do business.” Source: company website · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 6,494 | ||||
“Freshfields is a global firm with over 280 years’ experience of anticipating change, setting new standards and shaping the future of law.” Source: company website · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 4,289 | ||||
“Holland & Knight is a global law firm with more than 2,200 lawyers and other professionals in 35 offices throughout the world.” Source: company website · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 3,083 | ||||
“Welcome to Addleshaw Goddard (AG).” Source: company website · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 2,968 | ||||
“Irwin Mitchell is one of the UK’s largest full-service law firms, We believe everyone deserves clear legal guidance, strong advocacy, and genuine care.” Source: company website · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 2,860 | ||||
“Every day we make a difference.” Source: company website · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 2,834 | ||||
“DAC Beachcroft is a leading international legal business with offices across Europe, Latin America, North America and Asia Pacific.” Source: company website · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 2,750 | ||||
“On May 1, 2024, Allen & Overy and Shearman & Sterling merged to become A&O Shearman.” Source: company website · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 2,514 | ||||
“An international law firm that acts like your business partner.” Source: company website · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 2,198 | ||||
“McGuireWoods, one of the world’s leading law firms, has earned the loyalty of its many longstanding clients with deep and broad legal experience; a passion for understanding their…” Source: company website · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 1,955 | ||||
“Slaughter and May is regarded as one of the most prestigious law firms in the world.” Source: company website · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 1,818 | ||||
“We’re your business advisers as well as your lawyers, working in step with you to protect your interests today and progress your ambitions for tomorrow.” Source: company website · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 1,590 | ||||
“Cravath has been known as one of the premier U.S.” Source: company website · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 1,499 | ||||
“Weightmans is a Top 40 law firm, growing rapidly because of our focus on two key aspects of our business: our clients and our people.” Source: company website · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 1,486 | ||||
“We’re Browne Jacobson.” Source: company website · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 1,479 | ||||
“As a top-ranked Canadian business law firm, we advise clients on complex legal matters across borders and industries.” Source: company website · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 1,449 | ||||
“We’re the law firm clients choose for excellent service, incisive thinking and above all for our ability to focus on what matters.” Source: company website · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 1,424 | ||||
“Taylor Wessing is a global law firm that serves the world's most innovative people and businesses.” Source: company website · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 1,371 | ||||
“Based in London, Mishcon de Reya services an international community of clients and provides advice in situations where the constraints of geography often do not apply.” Source: company website · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 1,351 | ||||
“At Mills & Reeve, our 1,450 plus people and over 850 lawyers share one vision – achieve more together.” Source: company website · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 1,246 | ||||
“An unpredictable world calls for a progressive-thinking law firm that’s aligned to your ambitions.” Source: company website · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 1,211 | ||||
“RPC is a law firm invested in you, your ambitions and your commercial success.” Source: company website · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 1,149 | ||||
“Taylor Rose is a top 60 independent law firm with 1,700 experts operating nationwide and is recommended by the Legal 500 UK.” Source: company website · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1,112 | ||||
“Trowers & Hamlins is well known for its eclectic mix of specialisations combining sector leadership in the UK and across the Middle East and Asia.” Source: company website · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1,059 | ||||
“Birketts is a full service, UK Top 50 law firm.” Source: company website · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 5,017 law firms based in the United Kingdom
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Law firms based in the United Kingdom at a glance
As of Aug 29, 2026Companies by employee count
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among law firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United Kingdom whose own description of what they do matches “law firms”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among law firms, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 101,813 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on August 29, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Law firms by metro
Frequently asked
How many law firms are listed based in the United Kingdom?
The directory includes 5,017 law firms based in the United Kingdom as of August 2026.
Where are most of the listed law firms located?
London is the single most-represented city among the law firms on the list.
How many contacts and email addresses are available for these law firms?
The list includes 194,283 professional contacts and 101,813 email addresses for the listed law firms.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.