Company lists · Data refreshed September 2026

Top 25 Iso 27001 audit services based in the United Kingdom

RevenueBase identified 127 company matches for iso 27001 audit services associated with the United Kingdom as of September 2026 and tracks 617 professional contacts across them, including 124 with verified work emails. London is the largest hub.

This list covers company matches for iso 27001 audit services associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 28, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 28, 2026 How this list was built
127Companies
617Contacts tracked
124Verified emails
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The 25 largest iso 27001 audit services based in the United Kingdom

Ranked by team size
Top 25 of 127 company matches for iso 27001 audit services based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Sep 28, 2026n/a186 contacts →

Exact match

“IT support for businesses in London.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2Exact matchBasingstoke, United KingdomHQ recorded Sep 28, 202611-5020 contacts →

Exact match

“We help organisations achieve business-focused cybersecurity compliance across various industry and regulatory frameworks with successful stakeholder management, particularly in…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3Exact matchMalvern, United KingdomHQ recorded Sep 28, 202611-5018 contacts →

Exact match

“CQS (Certified Quality Systems) Ltd delivers straightforward, practical ISO certification with over 25 years of experience.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Sep 28, 202651-20018 contacts →

Exact match

“We provide a wide range of auditing, certification and gap analysis services on; AI, DORA, NIS2, Information Security, Business Continuity, International IT Service, GDPR and…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5Exact matchCumbernauld, United KingdomHQ recorded Sep 28, 20261-1012 contacts →

Exact match

“QCS International are experts in ISO certification from management system implementation to auditor training.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Sep 28, 20261-1012 contacts →

Exact match

“NDC started 15 years ago as a consultancy firm; specialising in manufacturing, service and aerospace sectors.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7Exact matchWinchester, United KingdomHQ recorded Sep 28, 202611-5012 contacts →

Exact match

“Security Consultants at Infosec Partners are formally trained to a high degree, having at least one of the following Security Management certifications: CESG CLAS, CISSP, CISM…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8Exact matchSunderland, United KingdomHQ recorded Sep 28, 20261-1010 contacts →

Exact match

“Flexible ISO consultancy support to suit you and your business.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9Exact matchBromsgrove, United KingdomHQ recorded Sep 28, 20261-109 contacts →

Exact match

“Forefront Certification Limited is a UKAS accredited Certification Body based near Birmingham, UK, offering ISO certification to ISO 9001:2015, ISO 14001:2015, ISO/IEC 27001:2022…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10Exact matchManchester, United KingdomHQ recorded Sep 28, 202611-508 contacts →

Exact match

“Predatech is a cyber security consultancy delivering a range of services, including penetration testing (CREST accredited), vulnerability management, ISO 27001, and certifications…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11Exact matchKingston Upon Hull, United KingdomHQ recorded Sep 28, 20261-108 contacts →

Exact match

“The Rybec Group is your cyber security partner built by former law enforcement investigators.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12Exact matchTewkesbury, United KingdomHQ recorded Sep 28, 20261-105 contacts →

Exact match

“Information security and compliance can be a challenging process across many areas and for many organisations.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13Exact matchManchester, United KingdomHQ recorded Sep 28, 20261-105 contacts →

Exact match

“Consultancy and Paperless Management Systems for companies wishing to achieve: ISO9001 (Quality), ISO14001 (Environmental), ISO27001 (Information Security) and ISO45001 (Health &…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Sep 28, 20261-105 contacts →

Exact match

“Helping you get ISO 27001 Certified.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15Exact matchLeeds, United KingdomHQ recorded Sep 28, 20261-105 contacts →

Exact match

“Security standards like ISO27001 can help.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16Exact matchStoke On Trent, United KingdomHQ recorded Sep 28, 202611-504 contacts →

Exact match

“EBS delivers first‑class consulting, auditing, and training across a wide range of International Management Standards, including ISO 9001 (Quality), ISO 14001 (Environmental), ISO…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17Exact matchLeeds, United KingdomHQ recorded Sep 28, 202611-504 contacts →

Exact match

“At Cyber Security Partners (CSP) we specialise in the provision of Cyber Security Consultancy, Data Protection and Certification and Compliance services including Risk Assessment…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18Exact matchIbstock, United KingdomHQ recorded Sep 28, 20261-104 contacts →

Exact match

“We are a boutique agency of specialist ISO 27001 consultants helping customers to manage their Information Security Management Systems.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19Exact matchLondon, United KingdomHQ recorded Sep 28, 202611-503 contacts →

Exact match

“Inavate Consulting are experts in information security management and ISO 27001 implementation, helping organisations move beyond checkbox compliance to build robust…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20Exact matchNeedham Market, United KingdomHQ recorded Sep 28, 20261-103 contacts →

Exact match

“Using ISO standards can ensure you have a powerful set of performance and marketing tools for your business.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21Exact matchLondon, United KingdomHQ recorded Sep 28, 20261-103 contacts →

Exact match

“The leader in Cybersecurity compliance.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22Exact matchManchester, United KingdomHQ recorded Sep 28, 20261-103 contacts →

Exact match

“We will help you meet the requirements of privacy and information security laws and regulations and the requirements of your stakeholders, customers and prospects.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23Exact matchLondon, United KingdomHQ recorded Sep 28, 20261-103 contacts →

Exact match

“Efficient, effective implementation of information security.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24Exact matchAberdeen, United KingdomHQ recorded Sep 28, 20261-102 contacts →

Exact match

“Quality Solutions (Scotland) Limited is the consultancy side of the business where we take companies through ISO 9001/14001/45001 certification process and have never failed to…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
25Exact matchNewton Flotman, United KingdomHQ recorded Sep 28, 20261-102 contacts →

Exact match

“McKibbin Management Consultants Ltd (MMC Ltd) was established in 2002 to offer companies professional support in achieving ISO (International Standard Organisation for…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase

Showing 25 of 127 iso 27001 audit services based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 124 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Iso 27001 audit services based in the United Kingdom at a glance

As of Sep 28, 2026
20.1%Verified-email coverage
4.9Average contacts per company
1-10Median size (employees)
24.4%Largest-city concentration · London
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
105
11-50
18
51-200
2
201-500
2

Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 127 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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
Company records associated with the United Kingdom whose business descriptions match “iso 27001 audit services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 124 professional contacts with verified work emails across the full matched dataset. 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 28, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Iso 27001 audit services by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “iso 27001 audit services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many iso 27001 audit services are there based in the United Kingdom?

RevenueBase identified 127 company matches for iso 27001 audit services associated with the United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

operum.tech tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most iso 27001 audit services?

London leads with 31 company records, followed by Manchester (4) and Leicester (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 124 professional contacts with verified work emails tracked across these 127 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 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.