Company lists · Data refreshed September 2026
Top 25 Data privacy audit services based in the United Kingdom
RevenueBase identified 129 data privacy audit services headquartered in the United Kingdom as of September 2026 and tracks 596 professional contacts across them, including 239 with verified work emails. London is the largest hub.
This list covers data privacy audit services 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 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.
The 25 largest data privacy audit services based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 46 contacts → | ||||
Partial evidence “HewardMills provides regulatory advice and other specialist Data Protection Officer (DPO) services to multinational organisations.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 2 | 39 contacts → | ||||
Partial evidence “Data Protection People are specialists in Data Protection and Information Security.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 3 | 28 contacts → | ||||
Partial evidence “Privacy Culture helps organisations build trust through expert privacy services supported by powerful technology.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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 28, 2026Thanks. The Data Team will review it. | |||||
| 5 | 19 contacts → | ||||
Partial evidence “Is your organisation confident in its data protection compliance?” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 6 | 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 28, 2026Thanks. The Data Team will review it. | |||||
| 7 | 17 contacts → | ||||
Partial evidence “We are the award-winning data protection consultancy and auditing service provider that helps organisations see data protection as an enabler for innovation.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 8 | 17 contacts → | ||||
Partial evidence “Lex Dinamica is a consulting firm that provides Privacy, AI and Risk solutions.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 9 | 15 contacts → | ||||
Partial evidence “Bruce & Butler Limited are your partners in Data Protection & Cyber Security.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 10 | 15 contacts → | ||||
Partial evidence “We help organisations keep their data safe, use technology responsibly, and stay on the right side of the law, without the jargon.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 11 | 15 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 28, 2026Thanks. The Data Team will review it. | |||||
| 12 | 13 contacts → | ||||
Strong evidence “At Kazient Privacy Experts, our Privacy, Data Protection and GDPR consultants offer cutting edge, practical and effective solutions for all your privacy and data protection…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 13 | 12 contacts → | ||||
Strong evidence “At Data Privacy Simplified, we understand that Data Privacy is not easy.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 14 | 10 contacts → | ||||
Strong evidence “Trust Keith is the global Privacy Management solution for data-centric SMBs with big ambitions.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 15 | 10 contacts → | ||||
Indirect evidence “Your GDPR and cyber security law experts” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 16 | 10 contacts → | ||||
Strong evidence “Data Protection and Privacy Law firm, Training and Consultancy.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 17 | 9 contacts → | ||||
Partial evidence “Privacy Helper is a leading UK privacy consultancy, providing zero-fuss GDPR guidance to organisations in the UK and globally.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 18 | 7 contacts → | ||||
Partial evidence “Leaders in data protection compliance for clinical practices Stricter legislation governing the use of clinical data has created a new challenge for healthcare organisations.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 19 | 6 contacts → | ||||
Strong evidence “Data Privacy Services is a dedicated consultancy covering a range of professional services relating to the European Union’s General Data Protection Regulation (GDPR) and…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 20 | 5 contacts → | ||||
Strong evidence “Business Overview Established in 2009, IG-Smart Ltd is a pioneering force in the realm of data privacy, security, and digital technology consultancy.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 21 | 4 contacts → | ||||
Partial evidence “We are GDPR Compliance Consultants and we help you get GDPR right: holding the right personal data, in the right way, for the right amount of time and for the right reasons.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 22 | 4 contacts → | ||||
Partial evidence “Kafico Ltd are data compliance experts who support customers across the UK and internationally.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 23 | 4 contacts → | ||||
Strong evidence “Our Data Protection as a Service offers you the simplest way to protect your staff's and your customer's private data.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 24 | 4 contacts → | ||||
Partial evidence “PrivacyCloud's team combines a cross-border legal background with Privacy Engineering capabilities and a track record in Marketing Technology, eCommerce, Analytics and AI.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 25 | 3 contacts → | ||||
Partial evidence “Outsourced Global Data Protection Officer (DPO), EU Representative and AI Governance partner for organisations operating across GDPR, PDPA, Swiss FADP and the EU AI Act.” Source: RevenueBase Database · checked Sep 28, 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 audit services. 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 audit services.
- Partial evidence
- Its own public description names part of data privacy audit services, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name data privacy audit services. 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 129 data privacy audit services based in the United Kingdom
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Data privacy audit services based in the United Kingdom at a glance
As of Sep 28, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 129 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 data privacy audit services, 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 audit services”. 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 audit services), 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 audit services, 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, 239 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.
Data privacy audit services 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 audit services, 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 audit services are there based in the United Kingdom?
RevenueBase identified 129 data privacy audit services 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?
Hewardmills, headquartered in London, tops this list with the largest team on record.
Which city has the most data privacy audit services?
London leads with 48 headquartered companies, followed by Brighton (4) and Bedford (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 239 verified decision-maker contacts tracked across these 129 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.
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