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, how directly it supports the match, 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 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 Match evidence 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. Evidence rates how directly each company's own description names gdpr compliance consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Wirehouse Employer ServicesPartial evidence	Warrington, United Kingdom	51-200	76
	“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: company website · checked Sep 3, 2026
2	EvalianIndirect evidence	Worcester, United Kingdom	51-200	61
	“Many organisations are dealing with multiple frameworks, overlapping tools, disconnected ownership, and increasing pressure from regulators, customers, and boards.” Source: company website · checked Sep 3, 2026
3	HewardmillsIndirect evidence	London, United Kingdom	11-50	46
	“HewardMills provides regulatory advice and other specialist Data Protection Officer (DPO) services to multinational organisations.” Source: company website · checked Sep 3, 2026
4	Data Protection PeopleIndirect evidence	Leeds, United Kingdom	11-50	39
	“Data Protection People are specialists in Data Protection and Information Security.” Source: company website · checked Sep 3, 2026
5	Seers AIIndirect evidence	London, United Kingdom	11-50	36
	“Seers is an AI-driven consent management platform that empowers businesses to meet global data privacy requirements with confidence and ease.” Source: company website · checked Sep 3, 2026
6	DBS Datamarketing LTDIndirect evidence	Chelmsford, United Kingdom	11-50	33
	“We are passionate about data… and we have been since 1994.” Source: company website · checked Sep 3, 2026
7	Privacy CultureIndirect evidence	London, United Kingdom	11-50	28
	“Privacy Culture helps organisations build trust through expert privacy services supported by powerful technology.” Source: company website · checked Sep 3, 2026
8	Securys LimitedIndirect evidence	London, United Kingdom	11-50	27
	“We believe privacy matters because people matter.” Source: company website · checked Sep 3, 2026
9	CookieyesPartial evidence	Milton Keynes, United Kingdom	11-50	25
	“CookieYes is a leading consent management platform (CMP) that helps businesses comply with privacy regulations such as GDPR, CCPA, LGPD, POPIA, and more.” Source: company website · checked Sep 3, 2026
10	DPO ConsultancyStrong evidence	London, United Kingdom	11-50	24
	“DPO Consultancy is a Den Bosch-based consultancy company specialized in GDPR, data privacy, and data protection compliance services.” Source: company website · checked Sep 3, 2026
11	ONE Compliance Cyber LimitedPartial evidence	United Kingdom	11-50	20
	“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: company website · checked Sep 3, 2026
12	DPASPartial evidence	Exeter, United Kingdom	11-50	20
	“Is your organisation confident in its data protection compliance?” Source: company website · checked Sep 3, 2026
13	Gdprlocal LTDStrong evidence	Brighton, United Kingdom	11-50	18
	“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: company website · checked Sep 3, 2026
14	DQM GRCIndirect evidence	Bucks, United Kingdom	11-50	18
	“We are the award-winning data protection consultancy and auditing service provider that helps organisations see data protection as an enabler for innovation.” Source: company website · checked Sep 3, 2026
15	IGS Information Governance ServicesIndirect evidence	London, United Kingdom	11-50	17
	“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: company website · checked Sep 3, 2026
16	LEX DinamicaPartial evidence	London, United Kingdom	11-50	17
	“Lex Dinamica is a consulting firm that provides Privacy, AI and Risk solutions.” Source: company website · checked Sep 3, 2026
17	Teal CompliancePartial evidence	Salford, United Kingdom	11-50	16
	“Teal Compliance provides support to Law Firms with Compliance.” Source: company website · checked Sep 3, 2026
18	Stiona Software LimitedIndirect evidence	Belfast, United Kingdom	11-50	14
	“Bespoke Digital Solutions We deliver bespoke software solutions to help drive business transformation and differentiate you from your competitors.” Source: company website · checked Sep 3, 2026
19	Pembroke PrivacyIndirect evidence	London, United Kingdom	11-50	12
	“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: company website · checked Sep 3, 2026
20	Data Privacy ManagerIndirect evidence	London, United Kingdom	51-200	11
	“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: company website · checked Sep 3, 2026
21	Trust Keith Your Always-On Privacy PartnerIndirect evidence	London, United Kingdom	11-50	10
	“Trust Keith is the global Privacy Management solution for data-centric SMBs with big ambitions.” Source: company website · checked Sep 3, 2026
22	Privacy PartnershipIndirect evidence	London, United Kingdom	11-50	10
	“Data Protection and Privacy Law firm, Training and Consultancy.” Source: company website · checked Sep 3, 2026
23	Privacy HelperPartial evidence	Bedford, United Kingdom	11-50	9
	“Privacy Helper is a leading UK privacy consultancy, providing zero-fuss GDPR guidance to organisations in the UK and globally.” Source: company website · checked Sep 3, 2026
24	Cyber Security Awareness CSAPartial evidence	Basingstoke, United Kingdom	201-500	8
	“Cyber Security Awareness are a market-leading provider of Security & GDPR awareness training and testing managed services.” Source: company website · checked Sep 3, 2026
25	TrueswiftPartial evidence	Reading, United Kingdom	11-50	5
	“TrueSwift delivers expert professional services projects in the fields of information management, GDPR, eDiscovery and data migration.” Source: company website · checked Sep 3, 2026

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

1-10Median size (employees)

LondonLargest hub · 95 HQs

77Contacts with mobile numbers

Sep 3, 2026Data 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 evidence 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 SmartSearch, 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.
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 an evidence 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

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 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.