Company lists · Data refreshed September 2026
Top 25 Multi-cloud security companies based in the United Kingdom
RevenueBase identified 198 multi-cloud security companies headquartered in the United Kingdom as of September 2026 and tracks 10,837 professional contacts across them, including 5,815 with verified work emails and 1,536 with mobile numbers. London is the largest hub.
This list covers multi-cloud security companies 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 5, 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.
The 25 largest multi-cloud security companies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 4,925 | ||||
“Sophos is a cybersecurity leader defending organizations globally with an AI-driven platform and expert-led services.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | 2,355 | ||||
“Darktrace is a global leader in AI cybersecurity, providing the essential cybersecurity platform to secure organizations today and for an ever-changing future.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | 502 | ||||
“SecurityHQ, a global cybersecurity company pioneering Security Performance Engineering for stronger operational performance and resilience.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | 414 | ||||
“Iomart combines cutting-edge cloud technology with deep industry expertise to help organisations transform with confidence.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | 297 | ||||
“At Quorum Cyber, we're on a mission to help good people win.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | 159 | ||||
“At Cyberfort we are passionate about the cyber security services we deliver for our customers which keeps their people, data, systems and technology infrastructure secure…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | 135 | ||||
“CSI, A Park Place Technologies Company, is an IT Managed Services Provider bringing world-class Hybrid Multi-Cloud, Data Protection, and Cyber Security solutions to our clients’…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | 125 | ||||
“KHIPU Networks is an award winning international Cyber Security Company delivering a wide range of network, wireless and security solutions, technologies and services across…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | 123 | ||||
“Bulletproof is now part of WorkNest Secure.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | 68 | ||||
“The organisations that run our world face relentless complexity and evolving threats.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | 66 | ||||
“We help businesses and individuals stay protected in an increasingly complex digital world.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | 60 | ||||
“Garrison is a London-based cybersecurity company founded in 2014 by David Garfield (CEO) and Henry Harrison (Chief Scientist).” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | 54 | ||||
“SenseOn deploys alongside all of your existing tools, unifying them into a single investigation plane and augmenting your team with cross-domain correlation, analytics, and…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | Adarma SecurityIndirect evidence | 51 | |||
“We are Adarma, independent leaders in detection and response services.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 15 | 46 | ||||
“Get to know etiCloud - Delivering tomorrow's technology, today.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 16 | 42 | ||||
“CoreTech is a specialist cyber security company whose people are motivated by the desire to deliver exceptional capabilities coupled with a real sense of mission.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 17 | 41 | ||||
“We are on a mission to simplify and scale cyber security by combining AI, automation, expert-led services, in a unified platform: giving every organisation, from MSPs to global…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 18 | 35 | ||||
“Intelligent data security platform that unifies Discovery, Classification, Remediation, and Workflow Automation, across Cloud & On-Prem, Structured & Unstructured data.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 19 | 32 | ||||
“Defense.com is transforming the way businesses manage cyber security by allowing them to easily identify, prioritise and remediate threats.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 20 | 32 | ||||
“Our expert team provide secure datacentre, network and cloud native solutions as well as industry leading managed services.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 21 | 32 | ||||
“Intrinsic Security is a UK-headquartered cybersecurity firm delivering 24/7 threat detection, incident response, and resilience across cloud, hybrid, OT, IoT, and identity…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 22 | 25 | ||||
“Encode is now part of Obrela Security Industries collectively delivering cutting edge Cyber Security Services, empowering organizations to better protect against cyber threats.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 23 | 24 | ||||
“Whatever you supply, design, build, manufacture, or grow, its excelling at it that has got your business to where it is today.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 24 | Nanjgel SolutionsPartial evidence | 24 | |||
“Nanjgel Solutions is focused on delivering the best IT security for businesses.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 25 | 23 | ||||
“4Secure is a trusted provider of software defined, cross-network/cross-domain cybersecurity solutions for commercial, government and defence.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 198 multi-cloud security companies based in the United Kingdom
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Multi-cloud security companies based in the United Kingdom at a glance
As of Sep 5, 2026Companies by employee count
Verified emails by last verification
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 multi-cloud security companies, 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 “multi-cloud security companies”. 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 multi-cloud security companies, 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, 5,815 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 5, 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.
Multi-cloud security companies by metro
- Multi-cloud security companies in London78
Frequently asked
How many multi-cloud security companies are there based in the United Kingdom?
RevenueBase identified 198 multi-cloud security companies 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?
Sophos, headquartered in Abingdon, tops this list with the largest team on record.
Which city has the most multi-cloud security companies?
London leads with 78 headquartered companies, followed by Manchester (7) and Birmingham (4).
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 5,815 verified decision-maker contacts tracked across these 198 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 5, 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.
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