Company lists · Data refreshed September 2026
Top 25 Security compliance consulting companies based in the United Kingdom
RevenueBase identified 801 security compliance consulting companies headquartered in the United Kingdom as of September 2026 and tracks 6,949 professional contacts across them, including 2,070 with verified work emails and 437 with mobile numbers. London is the largest hub.
This list covers security compliance consulting 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 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 compliance consulting companies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 705 | ||||
“Get a free, powerful security assessment with personalised recommendations, the same analysis that costs from IT Consultancies.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 2 | 303 | ||||
“Bridewell is the trusted cyber security partner for organisations operating within Critical National Infrastructure (CNI), as well as companies who want the highest standard of…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 3 | 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. | |||||
| 4 | 143 | ||||
“Logiq is a UK-based cyber security consultancy and secure managed services provider supporting defence, government, and critical national infrastructure (CNI) organisations where…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 5 | Turnkey ConsultingStrong evidence | 134 | |||
“Turnkey Consulting brings together people, protection, and performance to help the world’s leading companies understand and optimize their risk and security landscape.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 6 | 126 | ||||
“We are TRPGLOBAL, your strategic partner in helping you with the complexities of risk management.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 7 | 123 | ||||
“Bulletproof is now part of WorkNest Secure.” 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 | 90 | ||||
“Solutions | Testing | Knowledge Helping You Protect Your Business From Cyber Attackers Your security and compliance partner, delivering trust worldwide Cognisys are your trusted…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 10 | 85 | ||||
“Amethyst Risk Management is a leading cybersecurity consultancy supplying expert services and support to the UK Government, Defence, Operators of Essential Services, and the…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 11 | URMStrong evidence | 81 | |||
“Established in 2005, URM Consulting is a specialist provider of cyber and information security consultancy, training, and assurance services.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 12 | 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. | |||||
| 13 | 74 | ||||
“Saepio increase awareness, reduce risk and improve security in a continually evolving threat landscape.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 14 | 73 | ||||
“Dionach by Nomios has over 25 years of expertise in information security, supporting organisations in building resilience against ever‑evolving cyber threats.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 15 | 61 | ||||
“MDSec are a UK based consultancy with a passion for information security.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 16 | 60 | ||||
“Many organisations are dealing with multiple frameworks, overlapping tools, disconnected ownership, and increasing pressure from regulators, customers, and boards.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 17 | SQR Group Security Solutions LTDIndirect evidence | 58 | |||
“In today’s advanced, interconnected world, protecting the infrastructure that allows society to function is crucial.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 18 | 57 | ||||
“CyberLab is the UK-leading cyber security consultancy and managed services provider, trusted by over 1,200 enterprise businesses, government departments, and household names to…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 19 | Secforce LTDStrong evidence | 39 | |||
“SECFORCE are vendor independent offensive security specialists providing effective business risk intelligence and strategic security consulting.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 20 | 38 | ||||
“Omerta - A Global Security Technology and Services Company.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 21 | 36 | ||||
“Secarma exists to keep the world safe.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 22 | CyberisPartial evidence | 34 | |||
“Cyberis are pioneers in customer-focussed information security.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 23 | 32 | ||||
“Founded in 2006, Torrid Networks has been able to establish strong credentials in the area of cyber security products, research, consulting, managed services, education and staff…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 24 | 31 | ||||
“SPECIALISTS IN IT SECURITY AND COMPLIANCE Our goal is to help customers define, develop and implement information security and compliance services, no matter what stage of the…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 25 | 31 | ||||
“Salus is a provider of world-class cyber security services, enabling our clients to identify and manage their cyber risks proactively and effectively.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 801 security compliance consulting companies based in the United Kingdom
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Security compliance consulting companies 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 compliance consulting 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 “security compliance consulting 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 security compliance consulting 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, 2,070 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 compliance consulting companies by metro
- Security compliance consulting companies in London282
Frequently asked
How many security compliance consulting companies are there based in the United Kingdom?
RevenueBase identified 801 security compliance consulting 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?
COBRA, headquartered in London, tops this list with the largest team on record.
Which city has the most security compliance consulting companies?
London leads with 282 headquartered companies, followed by Manchester (24) and Birmingham (17).
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 2,070 verified decision-maker contacts tracked across these 801 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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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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