Company lists · Data refreshed September 2026

Top 25 Cloud security consultants based in London, United Kingdom

Name: Cloud security consultants based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 8, 2026 406 companies tracked

RevenueBase identified 406 cloud security consultants headquartered in London, United Kingdom as of September 2026 and tracks 28,060 professional contacts across them, including 1,382 with verified work emails and 652 with mobile numbers. London is the largest hub.

This list covers cloud security consultants 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 8, 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 8, 2026 86% judged on-target in blind review

406Companies

28,060Contacts tracked

1,382Verified emails

652Mobile numbers

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The 25 largest cloud security consultants based in London, United Kingdom

Ranked by team size

Top 25 of 406 cloud security consultants based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 8, 2026. RevenueBase Smart Search rates how each company's information relates to cloud security consultants: 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	Datatonic	Strong evidence	London, United KingdomHQ checked Sep 8, 2026	201-500	284 contacts →
	Strong evidence “The leading cloud data + AI consultancy, driving business impact for the world's most ambitious businesses, through cutting-edge cloud technologies.” Source: RevenueBase Database · checked Sep 8, 2026
2	Turnkey Consulting	Partial evidence	London, United KingdomHQ checked Sep 8, 2026	51-200	134 contacts →
	Partial 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 8, 2026
3	Trpglobal	Indirect evidence	London, United KingdomHQ checked Sep 8, 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 8, 2026
4	Bulletproof Cyber Security	Indirect evidence	London, United KingdomHQ checked Sep 8, 2026	51-200	123 contacts →
	Indirect evidence “Bulletproof is now part of WorkNest Secure.” Source: RevenueBase Database · checked Sep 8, 2026
5	Caretower An Integrity360 Company	Partial evidence	London, United KingdomHQ checked Sep 8, 2026	201-500	97 contacts →
	Partial 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 8, 2026
6	DOT Collective	Partial evidence	London, United KingdomHQ checked Sep 8, 2026	51-200	93 contacts →
	Partial evidence “We are data and cloud practitioners, and we create the springboard for momentous organisational leaps.” Source: RevenueBase Database · checked Sep 8, 2026
7	Sysgroup	Strong evidence	London, United KingdomHQ checked Sep 8, 2026	51-200	89 contacts →
	Strong evidence “SysGroup is the services leader for realising AI transformation, as an award-winning managed IT services, cloud hosting, and IT consultancy provider.” Source: RevenueBase Database · checked Sep 8, 2026
8	Xtravirt	Partial evidence	London, United KingdomHQ checked Sep 8, 2026	51-200	84 contacts →
	Partial evidence “Xtravirt is a cloud consulting and managed services business committed to supporting VMware and Omnissa customers across the full IT lifecycle.” Source: RevenueBase Database · checked Sep 8, 2026
9	Sytel Reply	Partial evidence	London, United KingdomHQ checked Sep 8, 2026	11-50	68 contacts →
	Partial evidence “Sytel Reply is the Reply Company focused on Networks and Security.” Source: RevenueBase Database · checked Sep 8, 2026
10	Cloudplexo	Partial evidence	London, United KingdomHQ checked Sep 8, 2026	51-200	54 contacts →
	Partial evidence “CloudPlexo is a global technology consulting firm helping organizations transform, innovate, and build resilience through Cloud, AI, and Cybersecurity.” Source: RevenueBase Database · checked Sep 8, 2026
11	Hexegic	Indirect evidence	London, United KingdomHQ checked Sep 8, 2026	51-200	52 contacts →
	Indirect 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 8, 2026
12	Blakyaks	Partial evidence	London, United KingdomHQ checked Sep 8, 2026	51-200	51 contacts →
	Partial evidence “We support you at every stage of your cloud native transformation.” Source: RevenueBase Database · checked Sep 8, 2026
13	Cognetiks Consulting	Partial evidence	London, United KingdomHQ checked Sep 8, 2026	11-50	46 contacts →
	Partial evidence “We are a leading provider of cloud advisory services, cloud migration, DevOps, automation and cloud-managed services to organizations.” Source: RevenueBase Database · checked Sep 8, 2026
14	Cloudscaler	Indirect evidence	London, United KingdomHQ checked Sep 8, 2026	51-200	42 contacts →
	Indirect evidence “We are Cloudscaler.” Source: RevenueBase Database · checked Sep 8, 2026
15	Expert Thinking	Partial evidence	London, United KingdomHQ checked Sep 8, 2026	51-200	34 contacts →
	Partial evidence “Make cloud work for you, not against you.” Source: RevenueBase Database · checked Sep 8, 2026
16	Bowmen Group	Indirect evidence	London, United KingdomHQ checked Sep 8, 2026	11-50	25 contacts →
	Indirect evidence “Through our consultative approach, specialised skills and innovative delivery model, Bowmen Group successfully implements some of the largest, most complex and notable unified…” Source: RevenueBase Database · checked Sep 8, 2026
17	The Scale Factory	Strong evidence	London, United KingdomHQ checked Sep 8, 2026	11-50	25 contacts →
	Strong evidence “The Scale Factory, an AWS Advanced Consulting Partner, is a cloud infrastructure consultancy based in London, UK.” Source: RevenueBase Database · checked Sep 8, 2026
18	work2gether.io	Partial evidence	London, United KingdomHQ checked Sep 8, 2026	51-200	23 contacts →
	Partial evidence “Empowering Elite Brands in the Digital Landscape: Your IT Consulting and Services Partner Transforming the Future with Cloud Solutions Technologies!” Source: RevenueBase Database · checked Sep 8, 2026
19	Konsolute	Partial evidence	London, United KingdomHQ checked Sep 8, 2026	11-50	22 contacts →
	Partial evidence “Konsolute was born to accelerate the world’s journey to the cloud through innovation and enterprise level solutions.” Source: RevenueBase Database · checked Sep 8, 2026
20	LMS Security	Strong evidence	London, United KingdomHQ checked Sep 8, 2026	11-50	20 contacts →
	Strong 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 8, 2026
21	NGS Next Generation Security	Partial evidence	London, United KingdomHQ checked Sep 8, 2026	11-50	20 contacts →
	Partial evidence “Formed in 2018, NGS (UK) Ltd are independent, Next Generation Security trusted advisors, providing all-encompassing solutions from the perimeter to the endpoint.” Source: RevenueBase Database · checked Sep 8, 2026
22	Consultants Factory	Indirect evidence	London, United KingdomHQ checked Sep 8, 2026	11-50	20 contacts →
	Indirect evidence “We at CF assist enterprises manage IT risks better.” Source: RevenueBase Database · checked Sep 8, 2026
23	Cloud Fruition Technologies	Indirect evidence	London, United KingdomHQ checked Sep 8, 2026	11-50	18 contacts →
	Indirect evidence “Technology is changing faster than ever.” Source: RevenueBase Database · checked Sep 8, 2026
24	Cloud Elemental	Partial evidence	London, United KingdomHQ checked Sep 8, 2026	11-50	17 contacts →
	Partial evidence “We help businesses simplify, modernise, and move forward with confidence in the cloud.” Source: RevenueBase Database · checked Sep 8, 2026
25	H3o Digital	Indirect evidence	London, United KingdomHQ checked Sep 8, 2026	11-50	17 contacts →
	Indirect evidence “H3O Digital provides enterprise class technical services for businesses of all sizes.” Source: RevenueBase Database · checked Sep 8, 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: cloud security consultants. 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 cloud security consultants.
Partial evidence: Its own public description names part of cloud security consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cloud security consultants. 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 406 cloud security consultants based in London, United Kingdom

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Cloud security consultants based in London, United Kingdom at a glance

As of Sep 8, 2026

4.9%Verified-email coverage

2.3%Mobile-number coverage

69.1Average contacts per company

1-10Median size (employees)

69.2%Largest-city concentration · London

Sep 8, 2026Page data refreshed

Companies by employee count

1-10

251

11-50

123

51-200

201-500

501-1,000

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 10.0d

1,2610–30

11231–60

061–90

090–180

9180+

Company record updated

Median 75.0d

00–30

6,07931–60

17,64461–90

3,59790–180

740180+

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 cloud security consultants, 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 “cloud security consultants”. 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 cloud security consultants), 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 cloud security consultants, 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, 1,382 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 8, 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.

Cloud security consultants by metro in the United Kingdom

Cloud security consultants in London281
Cloud security consultants 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 cloud security consultants, 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 cloud security consultants are there based in London, United Kingdom?

RevenueBase identified 406 cloud security consultants 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?

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

Which city has the most cloud security consultants?

London leads with 281 headquartered companies, followed by Manchester (25) and Bristol (11).

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 1,382 verified decision-maker contacts tracked across these 406 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 8, 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.