Company lists · Data verified August 2026

Top 25 Cloud security companies based in London, United Kingdom

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 111 companies tracked

This directory lists 111 cloud security companies based in London, United Kingdom, with 2,452 contacts and 1,194 email addresses. Updated August 2026, it identifies London as the single most-represented city among the companies on the list.

Cloud security companies provide products and services that protect cloud infrastructure, applications, data, workloads, identities, and access from security threats. This list covers companies that provide cloud security products or services, including cloud infrastructure protection, workload security, identity and access controls, data protection, and security monitoring. Ranked by team size, largest first. Data current as of August 28, 2026.

111Companies

2,452Contacts tracked

1,194Verified emails

344Mobile numbers

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

Ranked by team size

Top 25 of 111 cloud security companies based in London, United Kingdom, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Netwrix Corporation	London	501-1,000	799	550
2	Withsecure	London	501-1,000	614	329
3	Bulletproof Cyber Security	London	51-200	118	75
4	Cloudrise	London	51-200	69	42
5	Hexegic	London	51-200	52	30
6	Tessian	London	201-500	52	27
7	Cybaverse	London	51-200	40	23
8	Online Support	London	11-50	39	24
9	Mindtech Services	London	51-200	26	3
10	Encode	London	51-200	25	9
11	Cloud Fruition Technologies	London	11-50	17	4
12	Netrascale	London	11-50	14	2
13	Praeferre	London	11-50	13	2
14	Synopsis Technology	London	1-10	12	3
15	vdc.cloud	London	1-10	12	3
16	Socguardians LTD	London	11-50	12	1
17	Disclosure Cybersecurity	London	11-50	11	7
18	PC Power International LTD	London	11-50	10	8
19	Techmakers	London	1-10	9	3
20	Cykube	London	11-50	9	1
21	Cyscale	London	11-50	8	4
22	Mollis Group	London	1-10	7	3
23	Threat Protect	London	1-10	7	2
24	Cloudtrace	London	11-50	7	1
25	Certified Nerds Cyber Security Company	London	11-50	6	2

Showing 25 of 111 cloud security companies based in London, United Kingdom

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

As of Aug 28, 2026

11-50Median size (employees)

LondonLargest hub · 113 HQs

344Contacts with mobile numbers

9Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Cloud security companies by metro in the United Kingdom

Metro	Companies
Cloud security companies in London	113
Cloud security companies in Manchester	8
Cloud security companies in Cheltenham	6
Cloud security companies in Birmingham	4
Cloud security companies in Glasgow	3
Cloud security companies in Edinburgh	3
Cloud security companies in Sheffield	3
Cloud security companies in Leicester	2

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “cloud security companies”, with match quality audited by blind human judging, and headquartered in London, United Kingdom.
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: Contact records re-verify on a rolling cadence; 9 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many cloud security companies are based in London, United Kingdom?

The list contains 111 cloud security companies based in London, United Kingdom. It also includes 2,452 contacts and 1,194 email addresses.

Where are the most cloud security companies located?

London is the single most-represented city among the companies on the list. The directory covers companies based in London, United Kingdom.

What do cloud security companies do?

Cloud security companies protect cloud infrastructure, applications, data, workloads, identities, and access. Their offerings can include cloud security monitoring, workload protection, identity controls, data security, and threat prevention.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.