Company lists · Data refreshed September 2026
Top 25 Data privacy law firms based in the United Kingdom
RevenueBase identified 177 data privacy law firms headquartered in the United Kingdom as of September 2026 and tracks 1,178 professional contacts across them, including 546 with verified work emails and 101 with mobile numbers. London is the largest hub.
This list covers data privacy law firms headquartered in the 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 1, 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.
The 25 largest data privacy law firms based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 62 contacts → | ||||
Strong evidence “Atheria Law provides legal services to insurance and reinsurance clients, focusing on the technology, privacy and cyber, and professional liability sectors.” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 2 | 61 contacts → | ||||
Indirect evidence “Many organisations are dealing with multiple frameworks, overlapping tools, disconnected ownership, and increasing pressure from regulators, customers, and boards.” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 3 | 58 contacts → | ||||
Strong evidence “At Wrangu we understand the challenges our clients face around data privacy management, security, governance, risk and compliance.” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 4 | 53 contacts → | ||||
Strong evidence “Syrenis is a global privacy-tech company helping enterprises manage data consent, preferences, and privacy notices at scale.” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 5 | 46 contacts → | ||||
Partial evidence “HewardMills provides regulatory advice and other specialist Data Protection Officer (DPO) services to multinational organisations.” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 6 | 43 contacts → | ||||
Indirect evidence “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…” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 7 | 39 contacts → | ||||
Partial evidence “Data Protection People are specialists in Data Protection and Information Security.” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 8 | 28 contacts → | ||||
Partial evidence “Privacy Culture helps organisations build trust through expert privacy services supported by powerful technology.” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 9 | 27 contacts → | ||||
Partial evidence “We believe privacy matters because people matter.” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 10 | 24 contacts → | ||||
Strong evidence “DPO Consultancy is a Den Bosch-based consultancy company specialized in GDPR, data privacy, and data protection compliance services.” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 11 | 23 contacts → | ||||
Indirect evidence “For the past 17 years, we have been successfully empowering our clients to protect their business from cyber-threats and comply with industry standards and regulations.” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 12 | 21 contacts → | ||||
Indirect evidence “Taylor Hampton is an award winning Media litigation firm situated directly opposite the High Court in the Strand, London.” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 13 | 20 contacts → | ||||
Strong evidence “One Compliance are data privacy & cyber security specialists that focus on improving our clients security posture so that they can prioritise and mitigate security risks…” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 14 | 18 contacts → | ||||
Partial evidence “GDPRLocal is a dynamic, high-tech, data protection company, providing GDPR compliant services to a wide range of companies across the EU and globally.” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 15 | 17 contacts → | ||||
Indirect evidence “Claimsmiths brings together decades of litigation experience.” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 16 | 17 contacts → | ||||
Strong evidence “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…” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 17 | 17 contacts → | ||||
Partial evidence “Lex Dinamica is a consulting firm that provides Privacy, AI and Risk solutions.” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 18 | 16 contacts → | ||||
Partial evidence “Teal Compliance provides support to Law Firms with Compliance.” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 19 | 15 contacts → | ||||
Partial evidence “When facing critical threats to reputation and privacy, the most prominent people in business trust us.” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 20 | 12 contacts → | ||||
Partial evidence “We’re a new agency working across the world to shape, apply and enforce data rights.” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 21 | 12 contacts → | ||||
Strong evidence “A GLOBAL DATA PROTECTION, PRIVACY AND AI GOVERNANCE CONSULTANCY Pembroke Privacy is an award winning, Data Protection, Privacy & AI Governance consultancy with offices in Dublin…” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 22 | 11 contacts → | ||||
Strong evidence “Data Privacy Manager is a comprehensive privacy solution for personal data management, set out to protect digital privacy and help Organizations comply with data protection laws…” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 23 | 10 contacts → | ||||
Strong evidence “Trust Keith is the global Privacy Management solution for data-centric SMBs with big ambitions.” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 24 | 10 contacts → | ||||
Strong evidence “Data Protection and Privacy Law firm, Training and Consultancy.” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
| 25 | 9 contacts → | ||||
Strong evidence “Leading media, data protection, privacy and defamation solicitors based in London.” Source: RevenueBase Database · checked Sep 1, 2026Thanks. The Data Team will review it. | |||||
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: data privacy 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 data privacy law firms.
- Partial evidence
- Its own public description names part of data privacy law firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name data privacy 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 177 data privacy law firms based in the United Kingdom
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Data privacy law firms based in the United Kingdom at a glance
As of Sep 1, 2026Companies by employee count
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 data privacy 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 the United Kingdom whose own description of what they do matches “data privacy 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 data privacy 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 data privacy law firms, and records with no verified work email. Companies headquartered outside United Kingdom 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, 546 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 1, 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.
Data privacy law firms by metro
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 data privacy 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 data privacy law firms are there based in the United Kingdom?
RevenueBase identified 177 data privacy law firms headquartered in the 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?
Atheria LAW, headquartered in London, tops this list with the largest team on record.
Which city has the most data privacy law firms?
London leads with 82 headquartered companies, followed by Bedford (4) and Leeds (3).
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 546 verified decision-maker contacts tracked across these 177 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 1, 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.