Company lists · Data refreshed September 2026

Top 25 Secure cloud providers based in London, United Kingdom

Name: Secure cloud providers based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 13, 2026 81 companies tracked

RevenueBase identified 81 secure cloud providers headquartered in London, United Kingdom as of September 2026 and tracks 568 professional contacts across them, including 180 with verified work emails and 62 with mobile numbers. London is the largest hub.

This list covers secure cloud providers 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 13, 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 13, 2026 86% judged on-target in blind review

81Companies

568Contacts tracked

180Verified emails

62Mobile numbers

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The 25 largest secure cloud providers based in London, United Kingdom

Ranked by team size

Top 25 of 81 secure cloud providers based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 13, 2026. RevenueBase Smart Search rates how each company's information relates to secure cloud providers: 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	Krystal	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	89 contacts →
	Partial evidence “Krystal is a premium UK-based web hosting and cloud services company, here to support you and the planet.” Source: RevenueBase Database · checked Sep 13, 2026
2	CIVO	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	75 contacts →
	Partial evidence “Civo is the Sovereign Cloud and AI platform that frees you to build without limits.” Source: RevenueBase Database · checked Sep 13, 2026
3	Virocom LTD	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	21 contacts →
	Indirect evidence “Virocom is excited about technology and the potential power of its applications for the future – We provide our clients, their employees and customers, with sustainable…” Source: RevenueBase Database · checked Sep 13, 2026
4	Proxar IT Cloud Solutions Support Consulting	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	20 contacts →
	Partial evidence “Proxar IT Consulting provides IT services and security solutions for businesses of all sizes.” Source: RevenueBase Database · checked Sep 13, 2026
5	Lifeincloud	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	16 contacts →
	Indirect evidence “At LifeinCloud, we believe IT should serve your business, not the other way around.” Source: RevenueBase Database · checked Sep 13, 2026
6	Synopsis Technology	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	12 contacts →
	Partial evidence “Synopsis provides a variety of innovative and comprehensive IT Cloud solutions.” Source: RevenueBase Database · checked Sep 13, 2026
7	vdc.cloud	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	12 contacts →
	Strong evidence “Our mission is to provide business customers with effective cloud network security solutions that enhance productivity, eliminate silos, reduce costs, and achieve digital…” Source: RevenueBase Database · checked Sep 13, 2026
8	Bunker Technical Solutions	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	11 contacts →
	Indirect evidence “Our Core Values & Our mission are built on one goal: to be the most trusted, forward thinking IT partner you’ve ever worked with.” Source: RevenueBase Database · checked Sep 13, 2026
9	Defenx	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	10 contacts →
	Strong evidence “Defenx is an IT company that has an extensive background in providing businesses with cloud based security solutions and support for their digital infrastructure.” Source: RevenueBase Database · checked Sep 13, 2026
10	Hydras	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	10 contacts →
	Strong evidence “Hydras is a Digital & Cloud Transformation Consultancy that specialise in Cyber Security.” Source: RevenueBase Database · checked Sep 13, 2026
11	Cykube	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	9 contacts →
	Indirect evidence “Everything Cyber!” Source: RevenueBase Database · checked Sep 13, 2026
12	Macnamara ICT LTD	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	8 contacts →
	Partial evidence “Our goal has always been to deliver the very best possible experience of IT, with security front and center.” Source: RevenueBase Database · checked Sep 13, 2026
13	Aceobjects	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	8 contacts →
	Partial evidence “AceObjects provides a comprehensive product and solutions portfolio backed by the ultimate in security, performance and reliability via a fusion of technology and a team of…” Source: RevenueBase Database · checked Sep 13, 2026
14	Threat Protect	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	7 contacts →
	Indirect evidence “Threat Protect is a vendor-agnostic cybersecurity, compliance and AI governance partner based in London, working with organisations across finance, legal, energy, pharma…” Source: RevenueBase Database · checked Sep 13, 2026
15	Mollis Group	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	6 contacts →
	Indirect evidence “Mollis Group is an independent assurance consultancy.” Source: RevenueBase Database · checked Sep 13, 2026
16	Astec IT	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	5 contacts →
	Indirect evidence “Welcome to ASTEC IT, where we're all about maximising productivity and efficiency for your business in the digital realm!” Source: RevenueBase Database · checked Sep 13, 2026
17	Frontier Technology	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	5 contacts →
	Strong evidence “Frontier Technology - an Ekco company is a leading IT infrastructure and cloud solutions provider focused on providing data security and management solutions.” Source: RevenueBase Database · checked Sep 13, 2026
18	CM Security	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	5 contacts →
	Strong evidence “CM Security provides a Managed Service of Cloud Security and Protection combined with Professional Services from specialised professionals who’ll help you implement the right mix…” Source: RevenueBase Database · checked Sep 13, 2026
19	Posetiv Cloud LTD	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	4 contacts →
	Partial evidence “Welcome to Posetiv, please get in touch to find out how we can transform your cloud experience for the better.” Source: RevenueBase Database · checked Sep 13, 2026
20	The Teknov8 Group	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	3 contacts →
	Partial evidence “Teknov8 is an award winning UK Headquartered cloud technology innovator.” Source: RevenueBase Database · checked Sep 13, 2026
21	Threatproof	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	2 contacts →
	Indirect evidence “At Threatproof, our mission is to redefine cybersecurity for businesses of all sizes.” Source: RevenueBase Database · checked Sep 13, 2026
22	Psisec Limited	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	2 contacts →
	Partial evidence “PsiSec Limited is a UK-based IT company that provides Azure Support and cyber security services.” Source: RevenueBase Database · checked Sep 13, 2026
23	CLI Secure	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	2 contacts →
	Partial evidence “CLI Secure’s portfolio of IT solutions and services enable organisations, of every size, to leverage the full power of technology in order to improve business performance.” Source: RevenueBase Database · checked Sep 13, 2026
24	Equahost	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	1 contacts →
	Partial evidence “Equahost provides enterprise class hosting and managed services built on the public cloud.” Source: RevenueBase Database · checked Sep 13, 2026
25	Cloudteqh	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	1 contacts →
	Partial evidence “Welcome to CloudTeqh, Since our inception, we have been steadfast in our mission to empower businesses around the globe through cutting-edge technology and top-notch cloud…” Source: RevenueBase Database · checked Sep 13, 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: secure cloud providers. 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 secure cloud providers.
Partial evidence: Its own public description names part of secure cloud providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name secure cloud providers. 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 81 secure cloud providers based in London, United Kingdom

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Secure cloud providers based in London, United Kingdom at a glance

As of Sep 13, 2026

31.7%Verified-email coverage

10.9%Mobile-number coverage

7.0Average contacts per company

1-10Median size (employees)

123.5%Largest-city concentration · London

Sep 13, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

10001+

Freshness & accuracy

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

Email last verified

Median 16.0d

1420–30

3731–60

161–90

090–180

0180+

Company record updated

Median 71.0d

00–30

21331–60

26361–90

6590–180

27180+

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 secure cloud providers, 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 “secure cloud providers”. 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 secure cloud providers), 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 secure cloud providers, 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, 180 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 13, 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.

Secure cloud providers by metro in the United Kingdom

Secure cloud providers in London100

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 secure cloud providers, 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 secure cloud providers are there based in London, United Kingdom?

RevenueBase identified 81 secure cloud providers 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?

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

Which city has the most secure cloud providers?

London leads with 100 headquartered companies, followed by Manchester (10) and Bristol (6).

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 180 verified decision-maker contacts tracked across these 81 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 13, 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.