Company lists · Data refreshed September 2026

Top 25 Securities law firms based in London, United Kingdom

Name: Securities 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 13, 2026 115 companies tracked

RevenueBase identified 115 securities law firms headquartered in London, United Kingdom as of September 2026 and tracks 5,029 professional contacts across them, including 2,848 with verified work emails and 279 with mobile numbers. London is the largest hub.

This list covers securities 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 13, 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 13, 2026 86% judged on-target in blind review

115Companies

5,029Contacts tracked

2,848Verified emails

279Mobile numbers

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

Ranked by team size

Top 25 of 115 securities law firms based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 13, 2026. RevenueBase Smart Search rates how each company's information relates to securities 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	Slaughter And MAY	Partial evidence	London, United KingdomHQ checked Sep 13, 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 13, 2026
2	Farrer & CO	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	201-500	693 contacts →
	Indirect evidence “Farrer & Co is synonymous with the highest quality legal advice and service.” Source: RevenueBase Database · checked Sep 13, 2026
3	Howard Kennedy LLP	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	201-500	460 contacts →
	Partial evidence “We are a London based, full-service law firm, specialising in providing straightforward advice to ambitious clients ranging from entrepreneurial businesses, family offices and…” Source: RevenueBase Database · checked Sep 13, 2026
4	FOX Williams	Partial evidence	London, United KingdomHQ checked Sep 13, 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 13, 2026
5	Signature Litigation	Partial evidence	London, United KingdomHQ checked Sep 13, 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 13, 2026
6	Peters & Peters	Partial evidence	London, United KingdomHQ checked Sep 13, 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 13, 2026
7	Paul Robinson Solicitors LLP	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	123 contacts →
	Indirect evidence “Paul Robinson Solicitors LLP offer a complete range of legal services to individuals and businesses locally, in Essex and London.” Source: RevenueBase Database · checked Sep 13, 2026
8	Simkins LLP	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	81 contacts →
	Partial evidence “The go-to media, entertainment & commercial law experts, providing the full range of legal services you would expect from a leading and award-winning law firm that has been…” Source: RevenueBase Database · checked Sep 13, 2026
9	K&l Gates LLP	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	63 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 13, 2026
10	BCL Solicitors LLP	Partial evidence	London, United KingdomHQ checked Sep 13, 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 13, 2026
11	Mintz, Levin, Cohn, Ferris, Glovsky And Popeo, P.C	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	201-500	46 contacts →
	Indirect evidence “MINTZ, LEVIN, COHN, FERRIS, GLOVSKY AND POPEO LLP is a company based out of NEW BROAD STREET HOUSE 35 NEW BROAD STREET, LONDON, United Kingdom.” Source: RevenueBase Database · checked Sep 13, 2026
12	Rosling King LLP	Partial evidence	London, United KingdomHQ checked Sep 13, 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 13, 2026
13	Rosenblatt LAW	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	38 contacts →
	Partial evidence “Rosenblatt Law - the experts you come to with an opportunity to seize or an issue to solve.” Source: RevenueBase Database · checked Sep 13, 2026
14	Ingram Winter Green LLP	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	36 contacts →
	Partial evidence “London City Law Firm.” Source: RevenueBase Database · checked Sep 13, 2026
15	CM Murray LLP	Partial evidence	London, United KingdomHQ checked Sep 13, 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 13, 2026
16	Corker Binning	Partial evidence	London, United KingdomHQ checked Sep 13, 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 13, 2026
17	Mayer Brown International LLP	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	27 contacts →
	Partial 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 13, 2026
18	RW Blears	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	18 contacts →
	Partial evidence “We’re a law firm with decades of experience in advising on the full fundraising, investment and exit lifecycle, delivering sensible and commercial insight, without the…” Source: RevenueBase Database · checked Sep 13, 2026
19	Astraea	Indirect evidence	London, United KingdomHQ checked Sep 13, 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 13, 2026
20	Richardson Lissack	Indirect evidence	London, United KingdomHQ checked Sep 13, 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 13, 2026
21	Boulter And CO LLP Solicitors	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	16 contacts →
	Indirect evidence “Boulter and Company Solicitors was established in the 1990's in North London and Hertfordshire with a Nationwide client base to offer a fast, friendly and efficient service in all…” Source: RevenueBase Database · checked Sep 13, 2026
22	KMT Solicitors	Partial evidence	London, United KingdomHQ checked Sep 13, 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 13, 2026
23	Shearman Bowen	Partial evidence	London, United KingdomHQ checked Sep 13, 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 13, 2026
24	Towerhouse LLP	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	14 contacts →
	Indirect evidence “A small organisation helping our clients to have a big impact.” Source: RevenueBase Database · checked Sep 13, 2026
25	Elborne Mitchell LLP	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	14 contacts →
	Indirect evidence “Elborne Mitchell was founded in 1968 providing advice primarily to the insurance and shipping industries.” Source: RevenueBase Database · checked Sep 13, 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 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 law firms.
Partial evidence: Its own public description names part of securities 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 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 115 securities law firms based in London, United Kingdom

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

As of Sep 13, 2026

56.6%Verified-email coverage

5.5%Mobile-number coverage

43.7Average contacts per company

11-50Median size (employees)

100.0%Largest-city concentration · London

Sep 13, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 16.0d

2,2560–30

55531–60

1461–90

190–180

22180+

Company record updated

Median 65.0d

00–30

2,09031–60

2,12561–90

49990–180

315180+

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 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 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 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 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, 2,848 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 13, 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.

Securities law firms by metro in the United Kingdom

Securities law firms in London115

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 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 law firms are there based in London, United Kingdom?

RevenueBase identified 115 securities 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?

Slaughter And MAY, headquartered in London, tops this list with the largest team on record.

Which city has the most securities law firms?

London leads with 115 headquartered companies, followed by Bristol (8) and Belfast (6).

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 2,848 verified decision-maker contacts tracked across these 115 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 13, 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.