Company lists · Data refreshed September 2026
Top 25 Security operations center service providers based in the United Kingdom
RevenueBase identified 425 security operations center service providers headquartered in the United Kingdom as of September 2026 and tracks 10,825 professional contacts across them, including 4,522 with verified work emails and 1,248 with mobile numbers. London is the largest hub.
This list covers security operations center service providers 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 6, 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 security operations center service providers 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 6, 2026Thanks. The Data Team will review it. | |||||
| 2 | 242 | ||||
“Obrela Security Industries is a global provider of cyber security services.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 3 | 168 | ||||
“Sapphire delivers comprehensive cyber solutions tailored to your needs, spanning across consultancy, managed services, IT/OT and beyond.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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 6, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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 6, 2026Thanks. The Data Team will review it. | |||||
| 6 | 123 | ||||
“Bulletproof is now part of WorkNest Secure.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 7 | 116 | ||||
“TSP has a reputation for providing enterprise security solutions, as well as excellent system integration standards and exceptional aftercare support, since its founding in 1988.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 8 | 97 | ||||
“As an independent IT security specialist, Caretower provide comprehensive solutions to individual problems, thus allowing our recommendations to be unbiased.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 9 | 86 | ||||
“CyberGuard Technologies is the security division of Wavenet.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 10 | 80 | ||||
“When your business relies on security, compliance and a strong reputation for taking care of your customers, you need a partner that understands your ethos, your challenges and…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 11 | 80 | ||||
“At Reliance Cyber, we believe in truly partnering with our customers.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 12 | 68 | ||||
“The organisations that run our world face relentless complexity and evolving threats.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 13 | NormcyberPartial evidence | 64 | |||
“Established in 2015, NormCyber is a multi-award-winning cyber security specialist, on a mission to provide organisations with complete visibility and total control over cyber risk.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 14 | 63 | ||||
“From our offices in London, Bristol, and Manchester, Stripe OLT delivers cutting-edge cyber security and IT services to support and protect organisations in an ever-changing…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 15 | 62 | ||||
“At DigitalXRAID, we’re more than just a managed security services provider – we’re your trusted partner in safeguarding your business from cyber threats.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 16 | 61 | ||||
“e2e-assure is the UK's leading specialist in Managed Threat Detection and Response through our 24/7/365 UK owned and operated Security Operations Centre (SOC).” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 17 | 58 | ||||
“Black Diamond Security - Safeguarding Your World.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 18 | 54 | ||||
“SNO is a specialist network operations and security partner, helping organisations design, secure, and manage the networks they rely on every day.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 19 | InterforcePartial evidence | 54 | |||
“Interforce provide professional, trained, security operators and response teams to organisations who have a responsibility to keep people safe and prevent crime.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 20 | 53 | ||||
“Shield Security Services Limited was incorporated in 1986.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 21 | Adarma SecurityIndirect evidence | 51 | |||
“We are Adarma, independent leaders in detection and response services.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 22 | 46 | ||||
“Risk Management Security Services specialise in providing bespoke security to commercial, residential and Industrial premises.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 23 | 45 | ||||
“Established in 2004 (acquired by Gamma in 2023), Satisnet, a Gamma company is a pedigree-proven cyber security services and solutions specialist with a fully UK-based 24x7x365 SOC.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 24 | 43 | ||||
“AK9 Security and FM Solutions offers comprehensive security solutions for businesses, governmental organizations, and residential areas.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 25 | 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 6, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 425 security operations center service providers based in the United Kingdom
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Security operations center service providers based in the United Kingdom at a glance
As of Sep 6, 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 security operations center service providers, 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 “security operations center service providers”. 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 security operations center service providers, 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, 4,522 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 6, 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.
Security operations center service providers by metro
- Security operations center service providers in London151
Frequently asked
How many security operations center service providers are there based in the United Kingdom?
RevenueBase identified 425 security operations center service providers 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 security operations center service providers?
London leads with 151 headquartered companies, followed by Manchester (16) and Birmingham (12).
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 4,522 verified decision-maker contacts tracked across these 425 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 6, 2026.
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Security operations center service providers by geography
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- Security operations center service providers based in the Netherlands
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- Security operations center service providers based in Italy
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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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