Company lists · Data refreshed September 2026

Top 25 Gdpr compliance consulting firms based in the United Kingdom

Name: Gdpr compliance consulting firms based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 3, 2026 279 companies tracked

RevenueBase identified 279 gdpr compliance consulting firms headquartered in the United Kingdom as of September 2026 and tracks 1,255 professional contacts across them, including 449 with verified work emails and 77 with mobile numbers. London is the largest hub.

This list covers gdpr compliance consulting 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 3, 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 RevenueBase Smart Search rating on every row Refreshed Sep 3, 2026 86% judged on-target in blind review

279Companies

1,255Contacts tracked

449Verified emails

77Mobile numbers

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The 25 largest gdpr compliance consulting firms based in the United Kingdom

Ranked by team size

Top 25 of 279 gdpr compliance consulting firms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 3, 2026. RevenueBase Smart Search rates how each company's information relates to gdpr compliance consulting 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	Wirehouse Employer Services	Partial evidence	Warrington, United Kingdom	51-200	76 contacts →
	Partial evidence “HR Consultancy \| Employment Law \| GDPR Service \| Health & Safety \| Fire Risk Assessments Call 033 33 215 005 or email info@wirehouse-es.com to arrange a quote for our services.” Source: RevenueBase Database · checked Sep 3, 2026
2	Evalian	Indirect evidence	Worcester, United Kingdom	51-200	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 3, 2026
3	Hewardmills	Indirect evidence	London, United Kingdom	11-50	46 contacts →
	Indirect evidence “HewardMills provides regulatory advice and other specialist Data Protection Officer (DPO) services to multinational organisations.” Source: RevenueBase Database · checked Sep 3, 2026
4	Data Protection People	Indirect evidence	Leeds, United Kingdom	11-50	39 contacts →
	Indirect evidence “Data Protection People are specialists in Data Protection and Information Security.” Source: RevenueBase Database · checked Sep 3, 2026
5	Seers AI	Indirect evidence	London, United Kingdom	11-50	36 contacts →
	Indirect evidence “Seers is an AI-driven consent management platform that empowers businesses to meet global data privacy requirements with confidence and ease.” Source: RevenueBase Database · checked Sep 3, 2026
6	DBS Datamarketing LTD	Indirect evidence	Chelmsford, United Kingdom	11-50	33 contacts →
	Indirect evidence “We are passionate about data… and we have been since 1994.” Source: RevenueBase Database · checked Sep 3, 2026
7	Privacy Culture	Indirect evidence	London, United Kingdom	11-50	28 contacts →
	Indirect evidence “Privacy Culture helps organisations build trust through expert privacy services supported by powerful technology.” Source: RevenueBase Database · checked Sep 3, 2026
8	Securys Limited	Indirect evidence	London, United Kingdom	11-50	27 contacts →
	Indirect evidence “We believe privacy matters because people matter.” Source: RevenueBase Database · checked Sep 3, 2026
9	Cookieyes	Partial evidence	Milton Keynes, United Kingdom	11-50	25 contacts →
	Partial evidence “CookieYes is a leading consent management platform (CMP) that helps businesses comply with privacy regulations such as GDPR, CCPA, LGPD, POPIA, and more.” Source: RevenueBase Database · checked Sep 3, 2026
10	DPO Consultancy	Strong evidence	London, United Kingdom	11-50	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 3, 2026
11	ONE Compliance Cyber Limited	Partial evidence	United Kingdom	11-50	20 contacts →
	Partial 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 3, 2026
12	DPAS	Partial evidence	Exeter, United Kingdom	11-50	20 contacts →
	Partial evidence “Is your organisation confident in its data protection compliance?” Source: RevenueBase Database · checked Sep 3, 2026
13	Gdprlocal LTD	Strong evidence	Brighton, United Kingdom	11-50	18 contacts →
	Strong 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 3, 2026
14	DQM GRC	Indirect evidence	Bucks, United Kingdom	11-50	18 contacts →
	Indirect 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 3, 2026
15	IGS Information Governance Services	Indirect evidence	London, United Kingdom	11-50	17 contacts →
	Indirect 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 3, 2026
16	LEX Dinamica	Partial evidence	London, United Kingdom	11-50	17 contacts →
	Partial evidence “Lex Dinamica is a consulting firm that provides Privacy, AI and Risk solutions.” Source: RevenueBase Database · checked Sep 3, 2026
17	Teal Compliance	Partial evidence	Salford, United Kingdom	11-50	16 contacts →
	Partial evidence “Teal Compliance provides support to Law Firms with Compliance.” Source: RevenueBase Database · checked Sep 3, 2026
18	Stiona Software Limited	Indirect evidence	Belfast, United Kingdom	11-50	14 contacts →
	Indirect evidence “Bespoke Digital Solutions We deliver bespoke software solutions to help drive business transformation and differentiate you from your competitors.” Source: RevenueBase Database · checked Sep 3, 2026
19	Pembroke Privacy	Indirect evidence	London, United Kingdom	11-50	12 contacts →
	Indirect 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 3, 2026
20	Data Privacy Manager	Indirect evidence	London, United Kingdom	51-200	11 contacts →
	Indirect 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 3, 2026
21	Trust Keith Your Always-On Privacy Partner	Indirect evidence	London, United Kingdom	11-50	10 contacts →
	Indirect evidence “Trust Keith is the global Privacy Management solution for data-centric SMBs with big ambitions.” Source: RevenueBase Database · checked Sep 3, 2026
22	Privacy Partnership	Indirect evidence	London, United Kingdom	11-50	10 contacts →
	Indirect evidence “Data Protection and Privacy Law firm, Training and Consultancy.” Source: RevenueBase Database · checked Sep 3, 2026
23	Privacy Helper	Partial evidence	Bedford, United Kingdom	11-50	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 3, 2026
24	Cyber Security Awareness CSA	Partial evidence	Basingstoke, United Kingdom	201-500	8 contacts →
	Partial evidence “Cyber Security Awareness are a market-leading provider of Security & GDPR awareness training and testing managed services.” Source: RevenueBase Database · checked Sep 3, 2026
25	Trueswift	Partial evidence	Reading, United Kingdom	11-50	5 contacts →
	Partial evidence “TrueSwift delivers expert professional services projects in the fields of information management, GDPR, eDiscovery and data migration.” Source: RevenueBase Database · checked Sep 3, 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: gdpr compliance consulting 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 gdpr compliance consulting firms.
Partial evidence: Its own public description names part of gdpr compliance consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name gdpr compliance consulting 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 279 gdpr compliance consulting firms based in the United Kingdom

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Gdpr compliance consulting firms based in the United Kingdom at a glance

As of Sep 3, 2026

35.8%Verified-email coverage

6.1%Mobile-number coverage

4.5Average contacts per company

1-10Median size (employees)

34.1%Largest-city concentration · London

Sep 3, 2026Page data refreshed

Companies by employee count

1-10

220

11-50

51-200

201-500

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 gdpr compliance consulting 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 “gdpr compliance consulting 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 gdpr compliance consulting 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 gdpr compliance consulting 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, 449 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 3, 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.

Gdpr compliance consulting firms by metro

Gdpr compliance consulting firms in London95

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 gdpr compliance consulting 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 gdpr compliance consulting firms are there based in the United Kingdom?

RevenueBase identified 279 gdpr compliance consulting 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?

Wirehouse Employer Services, headquartered in Warrington, tops this list with the largest team on record.

Which city has the most gdpr compliance consulting firms?

London leads with 95 headquartered companies, followed by Manchester (7) and Southampton (5).

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 449 verified decision-maker contacts tracked across these 279 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 3, 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.