Company lists · Data refreshed November 2026

Top 24 Organization security certification services providers based in the United Kingdom

RevenueBase identified 407 company matches for organization security certification services providers associated with the United Kingdom as of November 2026 and tracks 4,152 professional contacts across them, including 1,636 with verified work emails. London is the largest hub.

This list covers company matches for organization security certification services providers 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 5, 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 5, 2026 How this list was built
407Companies
4,152Contacts tracked
1,636Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 24 largest organization security certification services providers based in the United Kingdom

Ranked by team size
Top 24 of 407 company matches for organization security certification services providers based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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 matchStaines-upon-thames, United KingdomHQ recorded Nov 5, 2026201-500471 contacts →

Exact match

“UKAS is the world’s leading #accreditation body delivering confidence in products and services, and supporting global value chains.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2Exact matchWest Malling, United KingdomHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
3Exact matchManchester, United KingdomHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Nov 5, 2026501-1,000123 contacts →

Exact match

“CREST is an international not-for-profit, membership body representing the global cyber security industry.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchNorwich, United KingdomHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
6Exact matchUpper Colwall, United KingdomHQ recorded Nov 5, 202651-200114 contacts →

Exact match

“IASME is a cyber security certification company based in the Malvern Hills, with an office in Belfast and one in Dalgety Bay, near Edinburgh.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Nov 5, 2026201-500104 contacts →

Exact match

“As an independent IT security specialist, Caretower provide comprehensive solutions to individual problems, thus allowing our recommendations to be unbiased.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8Exact matchHigh Wycombe, United KingdomHQ recorded Nov 5, 202651-20095 contacts →

Exact match

“We are a global leader for best practice solutions.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9Exact matchStourport-on-severn, United KingdomHQ recorded Nov 5, 2026201-50090 contacts →

Exact match

“CyberGuard Technologies is the security division of Wavenet.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchMaidenhead, United KingdomHQ recorded Nov 5, 202651-20079 contacts →

Exact match

“NSI is the UK’s most recognised certification body for fire and security.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchBella Vista, United KingdomHQ recorded Nov 5, 2026201-50066 contacts →

Exact match

“At RA, our PASSION is navigating digital complexities, securing assets, and ensuring compliance.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12Exact matchMacclesfield, United KingdomHQ recorded Nov 5, 202651-20064 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchHughenden, United KingdomHQ recorded Nov 5, 2026501-1,00062 contacts →

Exact match

“BM TRADA is proud to be part of Element, the market leader in Testing, Inspection, and Certification services.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Nov 5, 202651-20059 contacts →

Exact match

“Bulletproof is now part of WorkNest Secure.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchGlasgow, United KingdomHQ recorded Nov 5, 202651-20055 contacts →

Exact match

“International Associates (IA) is a leading provider of assessment, audit, verification, certification and training services.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchDudley, United KingdomHQ recorded Nov 5, 2026201-50047 contacts →

Exact match

“K2 Security division can boost an excess of 30 years’ experience within all sectors of the industry.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchWhitley Bay, United KingdomHQ recorded Nov 5, 202651-20044 contacts →

Exact match

“SSAIB (Security Systems and Alarms Inspection Board) is the leading certification body for organisations providing security systems and services, fire detection and alarm systems…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18Exact matchCambridge, United KingdomHQ recorded Nov 5, 202611-5032 contacts →

Exact match

“Pentesting Exams by Pentesting Experts.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchRotherham, United KingdomHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
20Exact matchAltrincham, United KingdomHQ recorded Nov 5, 202611-5029 contacts →

Exact match

“Based in Manchester UK, we are an independent Cyber Security Consultancy providing Security services across a wide range of markets, from multi-national Corporate Organisations…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchCambridge, United KingdomHQ recorded Nov 5, 202611-5024 contacts →

Exact match

“TWI Certification Ltd (TWI CL), is a wholly-owned subsidiary of The Welding Institute (TWI), formed in 1993 to exemplify the independence and impartiality required to deliver…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchWrexham, United KingdomHQ recorded Nov 5, 202611-5023 contacts →

Exact match

“ExVeritas delivers integrated certification, training, and safety advisory services for high-hazard industries worldwide.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23Exact matchJarrow, United KingdomHQ recorded Nov 5, 20261-1023 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24Exact matchBasingstoke, United KingdomHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase

Showing 24 of 407 organization security certification services providers based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 1,636 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Organization security certification services providers based in the United Kingdom at a glance

As of Nov 5, 2026
39.4%Verified-email coverage
10.2Average contacts per company
1-10Median size (employees)
26.5%Largest-city concentration · London
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
248
11-50
107
51-200
27
201-500
15
501-1,000
6
5,001-10,000
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 407 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 “organization security certification services providers” 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 1,636 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 5, 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.

Organization security certification services providers 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 “organization security certification services providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many organization security certification services providers are there based in the United Kingdom?

RevenueBase identified 407 company matches for organization security certification services providers 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?

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

Which city has the most organization security certification services providers?

London leads with 108 company records, followed by Manchester (11) and Leicester (6).

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 1,636 professional contacts with verified work emails tracked across these 407 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 5, 2026.

Ready to reach these companies? Verified emails and direct dials for all 407 organization security certification services providers based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

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.