Company lists · Data refreshed September 2026

Top 25 Cybersecurity law firms based in London, United Kingdom

Name: Cybersecurity 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 10, 2026 193 companies tracked

RevenueBase identified 193 company matches for cybersecurity law firms associated with London, United Kingdom as of September 2026 and tracks 5,611 professional contacts across them, including 2,417 with verified work emails and 337 with mobile numbers. Across the United Kingdom, London is the largest hub for this category.

This list covers company matches for cybersecurity 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 10, 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 10, 2026 How this list was built

193Companies

5,611Contacts tracked

2,417Verified emails

337Mobile numbers

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

Ranked by team size

Top 25 of 193 company matches for cybersecurity law firms based in London, United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 10, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Bird & Bird	Exact match	London, United KingdomHQ recorded Sep 10, 2026	1,001-5,000	3,187 contacts →
	Exact match “Bird & Bird is an international law firm with a focus on helping organisations being changed by technology and the digital world.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
2	Bulletproof Cyber Security	Exact match	London, United KingdomHQ recorded Sep 10, 2026	51-200	123 contacts →
	Exact match “Bulletproof is now part of WorkNest Secure.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
3	White HAT An Epam Company	Exact match	London, United KingdomHQ recorded Sep 10, 2026	51-200	77 contacts →
	Exact match “White Hat, part of the EPAM group, is an award-winning cyber intelligence and offensive security company that leverages an attacker’s perspective to shape innovative, proactive…” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
4	Hexegic	Exact match	London, United KingdomHQ recorded Sep 10, 2026	51-200	52 contacts →
	Exact match “At Hexegic we are not just passionate about protecting data through our Cyber services we are passionate about helping companies release the potential of the data they hold…” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
5	Istari	Exact match	London, United KingdomHQ recorded Sep 10, 2026	51-200	52 contacts →
	Exact match “ISTARI is a global cybersecurity firm, established by Temasek in 2020, with a unique model for helping clients build cyber resilience.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
6	Hewardmills	Exact match	London, United KingdomHQ recorded Sep 10, 2026	11-50	46 contacts →
	Exact match “HewardMills provides regulatory advice and other specialist Data Protection Officer (DPO) services to multinational organisations.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
7	Stuart Miller Solicitors	Exact match	London, United KingdomHQ recorded Sep 10, 2026	11-50	43 contacts →
	Exact match “Stuart Miller Solicitors have been able to exceed their goal of gaining a high reputation among others in the field, an achievement made possible by the high calibre of employees…” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
8	Cyber Rescue Alliance	Exact match	London, United KingdomHQ recorded Sep 10, 2026	1-10	29 contacts →
	Exact match “Cyber Rescue is a leading specialist in helping Boardroom Executives to measure, monitor and mitigate potential harm from cyber-attacks.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
9	Encode	Exact match	London, United KingdomHQ recorded Sep 10, 2026	51-200	25 contacts →
	Exact match “Encode is now part of Obrela Security Industries collectively delivering cutting edge Cyber Security Services, empowering organizations to better protect against cyber threats.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
10	Cyxcel	Exact match	London, United KingdomHQ recorded Sep 10, 2026	51-200	22 contacts →
	Exact match “CyXcel is a digital risk advisory firm built for a new era.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
11	Secure Purple	Exact match	London, United KingdomHQ recorded Sep 10, 2026	11-50	20 contacts →
	Exact match “Secure Purple is a leading cyber security and digital safety firm that provides innovative solutions and services to help organisations and individuals stay protected in the…” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
12	Sinevis	Exact match	London, United KingdomHQ recorded Sep 10, 2026	11-50	17 contacts →
	Exact match “We are a leading cybersecurity services organization with more than a decade of proven expertise in consulting, solution implementation and managed services.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
13	Barefoot Cyber	Exact match	London, United KingdomHQ recorded Sep 10, 2026	11-50	16 contacts →
	Exact match “Barefoot Cyber is the strategic partner for senior leaders who recognize that a cybersecurity attack is not just a technical failure, but a direct threat to their revenue…” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
14	Datasixth Consulting	Exact match	London, United KingdomHQ recorded Sep 10, 2026	51-200	15 contacts →
	Exact match “Who We Are DataSixth delivers Cybersecurity Intelligence.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
15	IGS Information Governance Services	Exact match	London, United KingdomHQ recorded Sep 10, 2026	11-50	15 contacts →
	Exact match “We are a specialist data protection and data ethics consultancy firm with an expert team of lawyers, consultants and advisors who provide a wide range of data privacy, data…” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
16	Netrascale	Exact match	London, United KingdomHQ recorded Sep 10, 2026	11-50	15 contacts →
	Exact match “At NetraScale, we help businesses navigate the ever-evolving cybersecurity landscape with confidence.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
17	Goallsecure	Exact match	London, United KingdomHQ recorded Sep 10, 2026	11-50	13 contacts →
	Exact match “In today’s world, cyber threats are complex and multilayered, so complete protection is not achievable through a single solution or product, that's why GoAllSecure provides a 360°…” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
18	Socguardians LTD	Exact match	London, United KingdomHQ recorded Sep 10, 2026	11-50	13 contacts →
	Exact match “Our mission at SOCGuardians is to empower organizations to operate confidently in a digital world by providing cutting-edge cybersecurity services.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
19	Disclosure Cybersecurity	Exact match	London, United KingdomHQ recorded Sep 10, 2026	11-50	11 contacts →
	Exact match “Disclosure Cybersecurity Ltd is a specialist cyber security company, formed by professionals with extensive experience and wide exposure in the cyber security market.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
20	First Response	Exact match	London, United KingdomHQ recorded Sep 10, 2026	11-50	11 contacts →
	Exact match “First Response is a London based specialist cybersecurity, cyber incident response and digital investigation company that helps organisations navigate the complex issues…” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
21	2-Sec	Exact match	London, United KingdomHQ recorded Sep 10, 2026	11-50	11 contacts →
	Exact match “At 2\|SEC Consulting, we deliver an end-to-end service of cyber and information security solutions which are tailored to each client’s exact security needs.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
22	Privacy Partnership	Exact match	London, United KingdomHQ recorded Sep 10, 2026	11-50	10 contacts →
	Exact match “Data Protection and Privacy Law firm, Training and Consultancy.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
23	Thomson Heath Jenkins & Associates	Exact match	London, United KingdomHQ recorded Sep 10, 2026	11-50	9 contacts →
	Exact match “Leading media, data protection, privacy and defamation solicitors based in London.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
24	Coc00n Cyber	Exact match	London, United KingdomHQ recorded Sep 10, 2026	1-10	8 contacts →
	Exact match “coc00n secures the personal devices of high-value and high-interest individuals against cyber attacks.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
25	Digiphile	Exact match	London, United KingdomHQ recorded Sep 10, 2026	1-10	8 contacts →
	Exact match “Digiphile is a challenger law firm specialising in UK and EU data protection and cybersecurity advice.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “cybersecurity law firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 193 cybersecurity law firms based in London, United Kingdom

See the full list, filter by size, metro and specialty, and access 2,417 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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

As of Sep 10, 2026

43.1%Verified-email coverage

6.0%Mobile-number coverage

29.1Average contacts per company

1-10Median size (employees)

Sep 10, 2026Page data refreshed

Companies by employee count

1-10

117

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 12.0d

2,2330–30

17831–60

061–90

190–180

5180+

Company record updated

Median 62.0d

00–30

2,60531–60

2,20161–90

50490–180

301180+

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 “cybersecurity 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 2,417 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 10, 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 “cybersecurity law firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 193 company matches for cybersecurity 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?

Bird & Bird 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 cybersecurity law firms?

London leads the United Kingdom with 190 company records, followed by Manchester (17) and Cambridge (6).

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 2,417 professional contacts with verified work emails tracked across these 193 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 10, 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 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.