Company lists · Data refreshed November 2026

Top 24 Iso 27001 certification services based in the United Kingdom

RevenueBase identified 304 company matches for iso 27001 certification services associated with the United Kingdom as of November 2026 and tracks 2,364 professional contacts across them, including 787 with verified work emails. London is the largest hub.

This list covers company matches for iso 27001 certification 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 November 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
304Companies
2,364Contacts tracked
787Verified emails
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The 24 largest iso 27001 certification services based in the United Kingdom

Ranked by team size
Top 24 of 304 company matches for iso 27001 certification services based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 Nov 6, 2026n/a222 contacts →

Exact match

“IT support for businesses in London.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchWest Malling, United KingdomHQ recorded Nov 6, 2026201-500158 contacts →

Exact match

“Amtivo Group provides expert certification services for ISO standards, as well as training and related services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchManchester, United KingdomHQ recorded Nov 6, 202651-200141 contacts →

Exact match

“Our reputation for providing outstanding service explains why clients who joined us when we first opened our doors in 1993 are still with us today.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchNorwich, United KingdomHQ recorded Nov 6, 202651-200120 contacts →

Exact match

“We believe in keeping ISO certification simple, so that's exactly what we do.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchReading, United KingdomHQ recorded Nov 6, 202651-20085 contacts →

Exact match

“Established in 2005, URM Consulting is a specialist provider of cyber and information security consultancy, training, and assurance services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchGlasgow, United KingdomHQ recorded Nov 6, 202651-20039 contacts →

Exact match

“Certum is Scotland's' leading provider of IT and telecom services to the SME sector.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchRotherham, United KingdomHQ recorded Nov 6, 202611-5032 contacts →

Exact match

“Clear Quality is a professional ISO Consultancy business and Prime Training provider based in South Yorkshire.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchHarpenden, United KingdomHQ recorded Nov 6, 20261-1024 contacts →

Exact match

“Launched in 2010, ADISA is a UKAS accredited certification body operating including certification to a Standard 8.0 which is a UK GDPR Certification Scheme formally recognised by…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchJarrow, United KingdomHQ recorded Nov 6, 20261-1023 contacts →

Exact match

“The certification body of choice for the built environment.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchBasingstoke, United KingdomHQ recorded Nov 6, 202611-5022 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 · Nov 6, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-20018 contacts →

Exact match

“CFE Certification, IAS (International Accreditation Service) ve UKAS (United Kingdom Accreditation Service) tarafından akredite edilmiş uluslararası bir belgelendirme kuruluşudur…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchHalesowen, United KingdomHQ recorded Nov 6, 202611-5017 contacts →

Exact match

“Advent IM is the UK’s leading independent GRC information and physical security consultancy and training provider.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchMalvern, United KingdomHQ recorded Nov 6, 202611-5017 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 · Nov 6, 2026 · View company records in RevenueBase
14Exact matchGlasgow, United KingdomHQ recorded Nov 6, 202611-5015 contacts →

Exact match

“ID Cyber Solutions is a certification body and specialist cyber security training company based in Glasgow, Scotland.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Nov 6, 202611-5015 contacts →

Exact match

“ISO Standards can help you improve efficiency, reduce costs and increase tender opportunities.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchBlackpool, United KingdomHQ recorded Nov 6, 202611-5015 contacts →

Exact match

“Established in 1994, we work with companies of all sizes across many sectors enabling them to meet ISO Standards and gain certification, whilst developing integrated management…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchCumbernauld, United KingdomHQ recorded Nov 6, 20261-1013 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchBromsgrove, United KingdomHQ recorded Nov 6, 20261-1013 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 · Nov 6, 2026 · View company records in RevenueBase
19Exact matchWinchester, United KingdomHQ recorded Nov 6, 202611-5013 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 · Nov 6, 2026 · View company records in RevenueBase
20Exact matchManchester, United KingdomHQ recorded Nov 6, 202611-5012 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 · Nov 6, 2026 · View company records in RevenueBase
21Exact matchLondon, United KingdomHQ recorded Nov 6, 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 · Nov 6, 2026 · View company records in RevenueBase
22Exact matchSunderland, United KingdomHQ recorded Nov 6, 20261-1011 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchSpalding, United KingdomHQ recorded Nov 6, 20261-1010 contacts →

Exact match

“Independent European Certification Limited is a UKAS accredited certification body based in South Lincolnshire, close to Peterborough.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchWakefield, United KingdomHQ recorded Nov 6, 20261-1010 contacts →

Exact match

“We have an enviable reputation for helping companies achieve Accreditations and Certifications.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 24 of 304 iso 27001 certification services based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 787 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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

As of Nov 6, 2026
33.3%Verified-email coverage
7.8Average contacts per company
1-10Median size (employees)
20.7%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
226
11-50
52
51-200
16
201-500
5
501-1,000
1

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 304 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 certification 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 787 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 November 6, 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 certification 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 certification services”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 304 company matches for iso 27001 certification services associated with the United Kingdom as of November 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 certification services?

London leads with 63 company records, followed by Manchester (8) and Glasgow (5).

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 787 professional contacts with verified work emails tracked across these 304 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 November 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.