Company lists · Data refreshed September 2026

Top 25 Data protection consulting firms based in London, United Kingdom

Name: Data protection consulting 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 28, 2026 344 companies tracked

RevenueBase identified 344 data protection consulting firms headquartered in London, United Kingdom as of September 2026 and tracks 2,172 professional contacts across them, including 751 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers data protection consulting firms headquartered in London, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review

344Companies

2,172Contacts tracked

751Verified emails

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The 25 largest data protection consulting firms based in London, United Kingdom

Ranked by team size

Top 25 of 344 data protection consulting firms based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to data protection 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	operum.tech	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	n/a	186 contacts →
	Indirect evidence “IT support for businesses in London.” Source: RevenueBase Database · checked Sep 28, 2026
2	Turnkey Consulting	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	134 contacts →
	Strong evidence “Turnkey Consulting brings together people, protection, and performance to help the world’s leading companies understand and optimize their risk and security landscape.” Source: RevenueBase Database · checked Sep 28, 2026
3	Trpglobal	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	126 contacts →
	Indirect evidence “We are TRPGLOBAL, your strategic partner in helping you with the complexities of risk management.” Source: RevenueBase Database · checked Sep 28, 2026
4	Caretower An Integrity360 Company	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	97 contacts →
	Indirect evidence “As an independent IT security specialist, Caretower provide comprehensive solutions to individual problems, thus allowing our recommendations to be unbiased.” Source: RevenueBase Database · checked Sep 28, 2026
5	Daintta	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	60 contacts →
	Indirect evidence “We provide deep expertise with technical and business specialists to help clients secure and protect the UK.” Source: RevenueBase Database · checked Sep 28, 2026
6	Hexegic	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	52 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
7	Hewardmills	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	46 contacts →
	Strong evidence “HewardMills provides regulatory advice and other specialist Data Protection Officer (DPO) services to multinational organisations.” Source: RevenueBase Database · checked Sep 28, 2026
8	Fredward	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	38 contacts →
	Indirect evidence “We have joined S&W and this profile is no longer being maintained.” Source: RevenueBase Database · checked Sep 28, 2026
9	Privitar	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	30 contacts →
	Partial evidence “Privitar empowers organizations to use their data safely and ethically.” Source: RevenueBase Database · checked Sep 28, 2026
10	Privacy Culture	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	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 28, 2026
11	Securys Limited	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	28 contacts →
	Indirect evidence “We believe privacy matters because people matter.” Source: RevenueBase Database · checked Sep 28, 2026
12	Smartsafe Consulting And Technology	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	26 contacts →
	Indirect evidence “Our overarching aim is to safeguard your information so that you can focus on taking your business where you want it to go.” Source: RevenueBase Database · checked Sep 28, 2026
13	Oyster IMS	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	24 contacts →
	Strong evidence “Data Protection * Information Governance * InfoSec Award-winning specialists in information governance and records management, with proven solutions for data discovery, data…” Source: RevenueBase Database · checked Sep 28, 2026
14	Cyxcel	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	22 contacts →
	Indirect evidence “CyXcel is a digital risk advisory firm built for a new era.” Source: RevenueBase Database · checked Sep 28, 2026
15	Kiris Group	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	22 contacts →
	Indirect evidence “Our Chartered Security Professionals seamlessly integrate discreet and effective security into lifestyles and organisations.” Source: RevenueBase Database · checked Sep 28, 2026
16	LMS Security	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	20 contacts →
	Indirect evidence “LMS Security are a fully Independent, privately owned, Internationally recognised and accredited Security Consultancy; owned and built by Electronic and Physical Security…” Source: RevenueBase Database · checked Sep 28, 2026
17	Consultants Factory	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	20 contacts →
	Indirect evidence “We at CF assist enterprises manage IT risks better.” Source: RevenueBase Database · checked Sep 28, 2026
18	Origin Secured	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	19 contacts →
	Partial evidence “Origin Secured redefines data excellence, turning regulatory challenges and business risk into opportunities for efficiency and cost savings.” Source: RevenueBase Database · checked Sep 28, 2026
19	Tenintelligence	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	19 contacts →
	Partial evidence “Our continued vision is to be the playmaker in our field; an investigation and protection consultancy, recognised for our diligence, excellence & integrity.” Source: RevenueBase Database · checked Sep 28, 2026
20	LEX Dinamica	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	17 contacts →
	Partial evidence “Lex Dinamica is a consulting firm that provides Privacy, AI and Risk solutions.” Source: RevenueBase Database · checked Sep 28, 2026
21	Vits LTD	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	16 contacts →
	Partial evidence “Your Trusted Partner in Cybersecurity & 360 IT Support Founded in 2004, VITS has built a reputation for protecting businesses across the globe with robust, responsive, and…” Source: RevenueBase Database · checked Sep 28, 2026
22	Forti5 Technologies	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	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, 2026
23	Alltime Technologies Limited	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	15 contacts →
	Indirect evidence “Alltime Technologies Limited is a London based Cyber Security focused Managed Services and Consultancy provider.” Source: RevenueBase Database · checked Sep 28, 2026
24	IGS Information Governance Services	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	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, 2026
25	Risk Crew	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	14 contacts →
	Indirect evidence “Risk Crew is known for their vision, innovative thinking and facility to embrace change.” Source: RevenueBase Database · checked Sep 28, 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: data protection 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 data protection consulting firms.
Partial evidence: Its own public description names part of data protection consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name data protection 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 344 data protection consulting firms based in London, United Kingdom

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Data protection consulting firms based in London, United Kingdom at a glance

As of Sep 28, 2026

34.6%Verified-email coverage

6.3Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

241

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 344 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 protection 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 London, United Kingdom whose own description of what they do matches “data protection 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 data protection 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 data protection consulting firms, and records with no verified work email. Companies headquartered outside London 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, 751 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 protection consulting firms by metro in the United Kingdom

Data protection consulting firms in Manchester25

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 protection 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 data protection consulting firms are there based in London, United Kingdom?

RevenueBase identified 344 data protection consulting firms headquartered in London, 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?

operum.tech, headquartered in London, tops this list with the largest team on record.

Which city in the United Kingdom has the most data protection consulting firms?

London leads the United Kingdom with 344 headquartered companies, followed by Manchester (25) and Birmingham (17).

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 751 verified decision-maker contacts tracked across these 344 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.