Company lists · Data refreshed September 2026

Top 25 Securities compliance law firms based in London, United Kingdom

Name: Securities compliance 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 29, 2026 54 companies tracked

RevenueBase identified 54 securities compliance law firms headquartered in London, United Kingdom as of September 2026 and tracks 1,356 professional contacts across them, including 862 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers securities compliance 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 29, 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 29, 2026 86% judged on-target in blind review

54Companies

1,356Contacts tracked

862Verified emails

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The 25 largest securities compliance law firms based in London, United Kingdom

Ranked by team size

Top 25 of 54 securities compliance law firms based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to securities compliance 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	Farrer & CO	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	201-500	693 contacts →
	Indirect evidence “Farrer & Co is synonymous with the highest quality legal advice and service.” Source: RevenueBase Database · checked Sep 29, 2026
2	FOX Williams	Partial evidence	London, United KingdomHQ checked Sep 29, 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 29, 2026
3	Novatus	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	51-200	102 contacts →
	Indirect 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 29, 2026
4	BCL Solicitors LLP	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	51-200	54 contacts →
	Partial 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 29, 2026
5	Rosling King LLP	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	51-200	45 contacts →
	Partial 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 29, 2026
6	Corker Binning	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	31 contacts →
	Partial 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 29, 2026
7	Richardson Lissack	Indirect evidence	London, United KingdomHQ checked Sep 29, 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 29, 2026
8	Towerhouse LLP	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	14 contacts →
	Indirect evidence “A small organisation helping our clients to have a big impact.” Source: RevenueBase Database · checked Sep 29, 2026
9	Hill Dickinson	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	1,001-5,000	13 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026
10	Prosec	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	10 contacts →
	Indirect evidence “Every day we are processing Company House filings for businesses like yours.” Source: RevenueBase Database · checked Sep 29, 2026
11	Callidus Solutions Limited	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	8 contacts →
	Partial evidence “Callidus Solutions Limited is a City based niche consultancy specialising in Financial Services and Insurance related regulatory, compliance and Company Secretarial work.” Source: RevenueBase Database · checked Sep 29, 2026
12	Compliance On Demand	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	6 contacts →
	Partial evidence “Compliance on Demand is a boutique consultancy for both regulated and unregulated businesses operating primarily in the real estate sector, but also general corporate and…” Source: RevenueBase Database · checked Sep 29, 2026
13	Skadi Limited	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	6 contacts →
	Indirect evidence “Founded in 2012, SKADI is focused on Business Integrity within the Financial Industry.” Source: RevenueBase Database · checked Sep 29, 2026
14	Cassadys Solicitors	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	5 contacts →
	Partial evidence “Cassadys is a law firm which is fast gaining prominence as a niche provider of legal services across various sectors.” Source: RevenueBase Database · checked Sep 29, 2026
15	Radix Legal & Consulting LTD	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	5 contacts →
	Partial evidence “Radix Legal and Consulting Ltd (RLC) is a client focused and business orientated law firm providing legal advisory, transactional support, consulting and training services to…” Source: RevenueBase Database · checked Sep 29, 2026
16	Robertson Pugh Associates LLP	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	5 contacts →
	Partial evidence “A solution-focused law firm specialising in business crime and investigations.” Source: RevenueBase Database · checked Sep 29, 2026
17	Temple Square Chambers	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	4 contacts →
	Indirect evidence “Temple Square Chambers specialises in UK, EU and international institutional and retail financial regulation and dispute resolution.” Source: RevenueBase Database · checked Sep 29, 2026
18	RTM Business Consulting	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	4 contacts →
	Indirect evidence “Every day the regulatory environment in which big business operates becomes more complex and more challenging.” Source: RevenueBase Database · checked Sep 29, 2026
19	CSL	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	4 contacts →
	Partial evidence “CSL is a solutions and results driven professional services firm providing Compliance, Risk Management and Audit services.” Source: RevenueBase Database · checked Sep 29, 2026
20	C&g Regulatory Solutions	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	3 contacts →
	Indirect evidence “Founded in 2021 by industry veteran Alexander Culley as A.C.Culley & Co, C&G Regulatory Solutions Limited, trading as C&G, offers deep experience of financial markets regulation…” Source: RevenueBase Database · checked Sep 29, 2026
21	Banfin	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	3 contacts →
	Partial evidence “Law for Finance transformed with BanFin.” Source: RevenueBase Database · checked Sep 29, 2026
22	Reen Anderson Solicitors	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	3 contacts →
	Partial evidence “At Reen Anderson Solicitors, we provide bespoke legal services designed to support your business and property investments to adhere to compliance requirements in business and in…” Source: RevenueBase Database · checked Sep 29, 2026
23	Prior LAW	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	2 contacts →
	Partial evidence “Niche corporate law firm specialising in employment law, M&A work, corporate structures and procedures.” Source: RevenueBase Database · checked Sep 29, 2026
24	SPW LAW Limited	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	1 contacts →
	Partial evidence “SPW Law Limited is a law firm located in London.” Source: RevenueBase Database · checked Sep 29, 2026
25	Tetractys Partners LLP	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	1 contacts →
	Partial evidence “Website temporarily down for maintenance* Tetractys Partners LLP is a compliance consultancy specialising in financial services regulatory compliance and general corporate…” Source: RevenueBase Database · checked Sep 29, 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: securities compliance 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 securities compliance law firms.
Partial evidence: Its own public description names part of securities compliance law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name securities compliance 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 54 securities compliance law firms based in London, United Kingdom

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Securities compliance law firms based in London, United Kingdom at a glance

As of Sep 29, 2026

63.6%Verified-email coverage

25.1Average contacts per company

1-10Median size (employees)

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 54 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 securities compliance 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 “securities compliance 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 securities compliance 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 securities compliance 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, 862 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 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.

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 securities compliance 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 securities compliance law firms are there based in London, United Kingdom?

RevenueBase identified 54 securities compliance 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?

Farrer & CO, headquartered in London, tops this list with the largest team on record.

Which city in the United Kingdom has the most securities compliance law firms?

London leads the United Kingdom with 54 headquartered companies, followed by Manchester (3) and Bradford (2).

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 862 verified decision-maker contacts tracked across these 54 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 29, 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.