Company lists · Data refreshed September 2026

Top 25 Business transactional law firms based in London, United Kingdom

RevenueBase identified 788 company matches for business transactional law firms associated with London, United Kingdom as of September 2026 and tracks 88,104 professional contacts across them, including 41,621 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers company matches for business transactional law firms associated with London, United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 28, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 28, 2026 How this list was built
788Companies
88,104Contacts tracked
41,621Verified emails
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The 25 largest business transactional law firms based in London, United Kingdom

Ranked by team size
Top 25 of 788 company matches for business transactional law firms based in London, United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Sep 28, 20265,001-10,0007,673 contacts →

Exact match

“We are a global law firm dedicated to creating advantage for our clients.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Sep 28, 20261,001-5,0006,805 contacts →

Exact match

“Linklaters is a leading global law firm, supporting and investing in the future of our clients wherever they do business.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Sep 28, 20265,001-10,0006,487 contacts →

Exact match

“Freshfields is a global firm with over 280 years’ experience of anticipating change, setting new standards and shaping the future of law.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Sep 28, 2026n/a6,284 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5Exact matchLondon, United KingdomHQ recorded Sep 28, 20261,001-5,0004,611 contacts →

Exact match

“Ashurst has combined with Perkins Coie to form Ashurst Perkins Coie.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Sep 28, 20265,001-10,0003,981 contacts →

Exact match

“A pioneering global law practice, we provide high quality legal advice and innovation worldwide.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Sep 28, 20261,001-5,0003,097 contacts →

Exact match

“Welcome to Addleshaw Goddard (AG).”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Sep 28, 20261,001-5,0002,498 contacts →

Exact match

“An international law firm that acts like your business partner.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Sep 28, 20261,001-5,0002,170 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10Exact matchLondon, United KingdomHQ recorded Sep 28, 20261,001-5,0001,951 contacts →

Exact match

“Slaughter and May is regarded as one of the most prestigious law firms in the world.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Sep 28, 20261,001-5,0001,444 contacts →

Exact match

“We’re the law firm clients choose for excellent service, incisive thinking and above all for our ability to focus on what matters.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12Exact matchLondon, United KingdomHQ recorded Sep 28, 20261,001-5,0001,376 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Sep 28, 20261,001-5,0001,353 contacts →

Exact match

“At Mills & Reeve, our 1,450 plus people and over 850 lawyers share one vision – achieve more together.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Sep 28, 20261,001-5,0001,216 contacts →

Exact match

“RPC is a law firm invested in you, your ambitions and your commercial success.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Sep 28, 20261,001-5,0001,155 contacts →

Exact match

“Taylor Rose is a top 60 independent law firm with 1,700 experts operating nationwide and is recommended by the Legal 500 UK.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16Exact matchLondon, United KingdomHQ recorded Sep 28, 2026501-1,0001,007 contacts →

Exact match

“Macfarlanes is a pre-eminent law firm that serves a global client base in Private Capital, Private Wealth, M&A and Disputes.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Sep 28, 2026201-500693 contacts →

Exact match

“Farrer & Co is synonymous with the highest quality legal advice and service.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Sep 28, 2026501-1,000591 contacts →

Exact match

“We’re Forsters, a leading law firm renowned for our private client and real estate focus.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19Exact matchLondon, United KingdomHQ recorded Sep 28, 2026501-1,000560 contacts →

Exact match

“Kingsley Napley is an independent, internationally recognised London law firm, trusted by individuals, businesses and organisations to discreetly handle complex, high-profile, and…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20Exact matchLondon, United KingdomHQ recorded Sep 28, 2026201-500460 contacts →

Exact match

“We are a London based, full-service law firm, specialising in providing straightforward advice to ambitious clients ranging from entrepreneurial businesses, family offices and…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21Exact matchLondon, United KingdomHQ recorded Sep 28, 2026201-500433 contacts →

Exact match

“Fladgate has always been structured around deep relationships, true partnerships with clients.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Sep 28, 2026201-500409 contacts →

Exact match

“Spencer West is a leading full-service international law firm, committed to a values-led approach and advising businesses and individuals globally.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23Exact matchLondon, United KingdomHQ recorded Sep 28, 2026201-500392 contacts →

Exact match

“Russell-Cooke is a top 100 law firm advising a mix of commercial, regulatory, not-for-profit and private clients across a broad range of services.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24Exact matchLondon, United KingdomHQ recorded Sep 28, 20261,001-5,000362 contacts →

Exact match

“Berwin Leighton Paisner and Bryan Cave have combined to form Bryan Cave Leighton Paisner LLP.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
25Exact matchLondon, United KingdomHQ recorded Sep 28, 2026201-500360 contacts →

Exact match

“A full service law firm with a diverse client base, Winckworth Sherwood prides itself on providing market leading advice across a broad range of sectors and markets.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase

Showing 25 of 788 business transactional law firms based in London, United Kingdom

See the full list, filter by size, metro and specialty, and access 41,621 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Business transactional law firms based in London, United Kingdom at a glance

As of Sep 28, 2026
47.2%Verified-email coverage
111.8Average contacts per company
11-50Median size (employees)
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
384
11-50
265
51-200
74
201-500
23
501-1,000
10
1,001-5,000
19
5,001-10,000
6
10001+
1

Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 788 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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
Company records associated with London, United Kingdom whose business descriptions match “business transactional law firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 41,621 professional contacts with verified work emails across the full matched dataset. 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 September 28, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “business transactional law firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many business transactional law firms are there based in London, United Kingdom?

RevenueBase identified 788 company matches for business transactional law firms associated with London, United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Clifford Chance tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United Kingdom has the most business transactional law firms?

London leads the United Kingdom with 788 company records, followed by Manchester (75) and Birmingham (52).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 41,621 professional contacts with verified work emails tracked across these 788 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 2026.

Ready to reach these companies? Verified emails and direct dials for all 788 business transactional law firms based in London, United Kingdom. Start with a free account, no credit card.

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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.