Company lists · Data refreshed September 2026

Top 25 Financial regulatory law firms based in London, United Kingdom

Name: Financial regulatory law firms based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 143 companies tracked

RevenueBase identified 143 financial regulatory law firms headquartered in London, United Kingdom as of September 2026 and tracks 15,835 professional contacts across them, including 2,467 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers financial regulatory law firms headquartered in London, United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review

143Companies

15,835Contacts tracked

2,467Verified emails

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The 25 largest financial regulatory law firms based in London, United Kingdom

Ranked by team size

Top 25 of 143 financial regulatory law firms based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to financial regulatory law firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	LAW Firm	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	n/a	6,284 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
2	Slaughter And MAY	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	1,951 contacts →
	Partial evidence “Slaughter and May is regarded as one of the most prestigious law firms in the world.” Source: RevenueBase Database · checked Sep 28, 2026
3	Farrer & CO	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	693 contacts →
	Indirect evidence “Farrer & Co is synonymous with the highest quality legal advice and service.” Source: RevenueBase Database · checked Sep 28, 2026
4	FOX Williams	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	223 contacts →
	Partial evidence “Fox Williams is a leading law firm based in the City of London, trusted by its clients to provide quality advice with a high level of partner involvement and an astute commercial…” Source: RevenueBase Database · checked Sep 28, 2026
5	Signature Litigation	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	146 contacts →
	Partial evidence “Signature Litigation is a London-based law firm with offices in Paris, Gibraltar and Frankfurt, specialising in commercial litigation and arbitration.” Source: RevenueBase Database · checked Sep 28, 2026
6	Peters & Peters	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	131 contacts →
	Partial evidence “Peters & Peters is one of the UK's leading law firms in business crime, commercial litigation and compliance.” Source: RevenueBase Database · checked Sep 28, 2026
7	Novatus	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	102 contacts →
	Strong evidence “We enable financial services firms to meet their most complex regulatory requirements through specialist technology and expert-led advisory services.” Source: RevenueBase Database · checked Sep 28, 2026
8	Thistle Initiatives	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	76 contacts →
	Strong evidence “Thistle Initiatives is an award‑winning management consultancy specialising in regulatory compliance, financial crime and business transformation.” Source: RevenueBase Database · checked Sep 28, 2026
9	K&l Gates LLP	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	63 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
10	BCL Solicitors LLP	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	54 contacts →
	Strong evidence “BCL Solicitors LLP is a market leading law firm, specialising in domestic and international corporate crime, financial crime, regulatory enforcement, and serious and general crime.” Source: RevenueBase Database · checked Sep 28, 2026
11	JP Legal	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	46 contacts →
	Partial evidence “J&P Legal is a regional law firm advising clients on a wide range of Corporate and Commercial matters.” Source: RevenueBase Database · checked Sep 28, 2026
12	Rosling King LLP	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	45 contacts →
	Strong evidence “Rosling King is a rapidly growing UK-based law firm specialising in serving the needs of financial institutions and the real estate, private equity and construction sectors.” Source: RevenueBase Database · checked Sep 28, 2026
13	Candey	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	36 contacts →
	Partial evidence “CANDEY is a conflict free, disputes only law firm based in London, New York, Vienna and the British Virgin Islands.” Source: RevenueBase Database · checked Sep 28, 2026
14	Complyport	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	36 contacts →
	Indirect evidence “Welcome to Complyport - member of ComplyMAP Group!” Source: RevenueBase Database · checked Sep 28, 2026
15	RQC Group	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	34 contacts →
	Partial evidence “RQC Group is an industry-leading financial compliance consultancy with offices in London and New York, specialising in FCA, SEC and CFTC/NFA Compliance Consulting, Investment…” Source: RevenueBase Database · checked Sep 28, 2026
16	CM Murray LLP	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	31 contacts →
	Partial evidence “CM Murray LLP's 'deep expertise in both partnership and employment law', makes it well-placed to handle complex and sensitive matters for clients.” Legal 500 Tier 1 (Partnership…” Source: RevenueBase Database · checked Sep 28, 2026
17	Corker Binning	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	31 contacts →
	Strong evidence “Based in the heart of legal London, Corker Binning is a law firm specialising in fraud, regulatory litigation and general criminal work of all types.” Source: RevenueBase Database · checked Sep 28, 2026
18	Bark&co	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	28 contacts →
	Partial evidence “Bark & co Solicitors is an established and dynamic City of London based law firm with over 40 legal practitioners specialising in a range of areas including business regulation…” Source: RevenueBase Database · checked Sep 28, 2026
19	Mayer Brown International LLP	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	27 contacts →
	Strong evidence “Mayer Brown is a distinctively global law firm, uniquely positioned to advise the world’s leading companies and financial institutions on their most complex deals and disputes.” Source: RevenueBase Database · checked Sep 28, 2026
20	Constantine LAW	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	25 contacts →
	Partial evidence “We provide Employment and Regulatory Solutions at Work.” Source: RevenueBase Database · checked Sep 28, 2026
21	Astraea	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	18 contacts →
	Indirect evidence “Established by James Ramsden KC and Nina Stewart, Astraea is a special situations legal and professional services firm, providing partner-led strategic counsel to help its clients…” Source: RevenueBase Database · checked Sep 28, 2026
22	Richardson Lissack	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	17 contacts →
	Indirect evidence “Richardson Lissack is a specialist corporate protection solicitors based in London and Manchester.” Source: RevenueBase Database · checked Sep 28, 2026
23	KMT Solicitors	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	15 contacts →
	Partial evidence “Established in 2009, Karam, Missick & Traube LLP Solicitors is a full-service law firm in the heart of London specialising in corporate matters and dispute resolution with a…” Source: RevenueBase Database · checked Sep 28, 2026
24	Shearman Bowen	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	15 contacts →
	Partial evidence “Shearman Bowen is a law firm in Ely Place, London EC1, established in 2001 and specialising in white collar crime.” Source: RevenueBase Database · checked Sep 28, 2026
25	Towerhouse LLP	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	14 contacts →
	Indirect evidence “A small organisation helping our clients to have a big impact.” Source: RevenueBase Database · checked Sep 28, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: financial regulatory law firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names financial regulatory law firms.
Partial evidence: Its own public description names part of financial regulatory law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name financial regulatory law firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 143 financial regulatory law firms based in London, United Kingdom

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Financial regulatory law firms based in London, United Kingdom at a glance

As of Sep 28, 2026

15.6%Verified-email coverage

110.7Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

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 143 companies.

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 financial regulatory law firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search 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 Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in London, United Kingdom whose own description of what they do matches “financial regulatory law firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names financial regulatory law firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among financial regulatory law firms, and records with no verified work email. Companies headquartered outside London 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 its RevenueBase Smart Search 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, 2,467 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 September 28, 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.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names financial regulatory law firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many financial regulatory law firms are there based in London, United Kingdom?

RevenueBase identified 143 financial regulatory law firms headquartered in London, United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

LAW Firm, headquartered in London, tops this list with the largest team on record.

Which city in the United Kingdom has the most financial regulatory law firms?

London leads the United Kingdom with 143 headquartered companies, followed by Manchester (6) and Belfast (4).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 2,467 verified decision-maker contacts tracked across these 143 companies.

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.

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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 Smart Search, 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.