Company lists · Data refreshed November 2026

Top 25 Certification companies based in the United Kingdom

Name: Certification companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 480 companies tracked

RevenueBase identified 480 company matches for certification companies associated with the United Kingdom as of November 2026 and tracks 63,126 professional contacts across them, including 20,947 with verified work emails. London is the largest hub.

This list covers company matches for certification companies 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

480Companies

63,126Contacts tracked

20,947Verified emails

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The 25 largest certification companies based in the United Kingdom

Ranked by team size

Top 25 of 480 company matches for certification companies 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Bureau Veritas	Exact match	Paris, United KingdomHQ recorded Nov 6, 2026	10001+	50,489 contacts →
	Exact match “Bureau Veritas is a world leader in Testing, Inspection and Certification.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Element Materials Technology	Exact match	London, United KingdomHQ recorded Nov 6, 2026	5,001-10,000	4,533 contacts →
	Exact match “The Element Materials Technology Group is one of the world’s leading global providers of testing, inspection, and certification services for a diverse range of products…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	British Engineering Services Group	Exact match	Warrington, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	787 contacts →
	Exact match “Testing, inspection, certification and compliance is our core business so that’s what gets 100% of our focus.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	UKAS	Exact match	Staines-upon-thames, United KingdomHQ recorded Nov 6, 2026	201-500	471 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 6, 2026 · View company records in RevenueBase
5	Certsure LLP	Exact match	Luton, United KingdomHQ recorded Nov 6, 2026	201-500	199 contacts →
	Exact match “Certsure offers industry-leading certification services, Building Regulations schemes, products and support to the construction industry.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Warringtonfire	Exact match	Warrington, United KingdomHQ recorded Nov 6, 2026	201-500	199 contacts →
	Exact match “Warringtonfire is proud to be part of Element Materials Technology, the leader in Testing, Inspection, Certification and Calibration services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	British Board Of Agrément	Exact match	Croxley Park, United KingdomHQ recorded Nov 6, 2026	51-200	190 contacts →
	Exact match “The British Board of Agrément (BBA) drives industry safety and quality by providing services that help clients through enabling innovation, identifying risk and demonstrating…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Kiwa UK	Exact match	Cheltenham, United KingdomHQ recorded Nov 6, 2026	201-500	168 contacts →
	Exact match “Kiwa Ltd is part of the Kiwa Group, a global top 20 Testing, Inspection and Certification (TIC) organisation.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Amtivo Group	Exact match	West Malling, United KingdomHQ recorded Nov 6, 2026	201-500	158 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
10	Niceic	Exact match	Dunstable, United KingdomHQ recorded Nov 6, 2026	201-500	142 contacts →
	Exact match “NICEIC is the UK’s largest certification body for electrical businesses.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Isoqar	Exact match	Manchester, United KingdomHQ recorded Nov 6, 2026	51-200	141 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
12	Stroma Certification	Exact match	Wakefield, United KingdomHQ recorded Nov 6, 2026	201-500	135 contacts →
	Exact match “Elmhurst Energy and Stroma Certification have merged.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	CREST	Exact match	London, United KingdomHQ recorded Nov 6, 2026	501-1,000	123 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 6, 2026 · View company records in RevenueBase
14	Citation ISO Certification	Exact match	Norwich, United KingdomHQ recorded Nov 6, 2026	51-200	120 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
15	IASME	Exact match	Upper Colwall, United KingdomHQ recorded Nov 6, 2026	51-200	114 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 6, 2026 · View company records in RevenueBase
16	Phenna Group	Exact match	London, United KingdomHQ recorded Nov 6, 2026	5,001-10,000	111 contacts →
	Exact match “Phenna Group is a global family of specialist businesses delivering Testing, Inspection, Certification and Compliance (TICC) services to customers worldwide.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	BRCGS	Exact match	London, United KingdomHQ recorded Nov 6, 2026	51-200	110 contacts →
	Exact match “BRCGS is a leading brand and consumer protection organisation, used by certificated suppliers over 130 countries, with certification issued through a global network of accredited…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Qualification Check	Exact match	London, United KingdomHQ recorded Nov 6, 2026	51-200	106 contacts →
	Exact match “Global Verification Made Simple.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	ERM CVS	Exact match	London, United KingdomHQ recorded Nov 6, 2026	51-200	106 contacts →
	Exact match “ERM CVS provides science-based, independent assurance, verification certification and training services for the world’s leading organizations.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	APM Group	Exact match	High Wycombe, United KingdomHQ recorded Nov 6, 2026	51-200	95 contacts →
	Exact match “We are a global leader for best practice solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	MCS	Exact match	Warrington, United KingdomHQ recorded Nov 6, 2026	51-200	94 contacts →
	Exact match “With energy costs constantly rising and climate change affecting us all – low-carbon technology has a bigger and bigger role to play in the future of UK energy.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Alphaplus	Exact match	Manchester, United KingdomHQ recorded Nov 6, 2026	11-50	87 contacts →
	Exact match “AlphaPlus is one of the UK’s leading education consultancy and service businesses, specialising in standards, assessment and certification.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Irca International Register Of Certificated Auditors	Exact match	London, United KingdomHQ recorded Nov 6, 2026	11-50	86 contacts →
	Exact match “Your partners in quality.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	NSI	Exact match	Maidenhead, United KingdomHQ recorded Nov 6, 2026	51-200	79 contacts →
	Exact match “NSI is the UK’s most recognised certification body for fire and security.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	B LAB UK	Exact match	London, United KingdomHQ recorded Nov 6, 2026	11-50	66 contacts →
	Exact match “B Corps are accelerating a global culture shift to redefine success in business and build a more inclusive and sustainable economy.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “certification companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 480 certification companies based in the United Kingdom

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Certification companies based in the United Kingdom at a glance

As of Nov 6, 2026

33.2%Verified-email coverage

131.5Average contacts per company

1-10Median size (employees)

23.5%Largest-city concentration · London

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

255

11-50

132

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 480 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 “certification companies” 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 20,947 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.

Certification companies by metro

Certification companies in London113

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 “certification companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many certification companies are there based in the United Kingdom?

RevenueBase identified 480 company matches for certification companies 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?

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

Which city has the most certification companies?

London leads with 113 company records, followed by Manchester (15) and Aberdeen (7).

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 20,947 professional contacts with verified work emails tracked across these 480 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.