Company lists · Data refreshed September 2026

Top 25 Certification bodies based in the United Kingdom

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

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 309 companies tracked

RevenueBase identified 309 certification bodies headquartered in the United Kingdom as of September 2026 and tracks 11,035 professional contacts across them, including 5,414 with verified work emails. London is the largest hub.

This list covers certification bodies 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

309Companies

11,035Contacts tracked

5,414Verified emails

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The 25 largest certification bodies based in the United Kingdom

Ranked by team size

Top 25 of 309 certification bodies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to certification bodies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Element Materials Technology	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	5,001-10,000	4,200 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
2	British Engineering Services Group	Partial evidence	Warrington, United KingdomHQ checked Sep 19, 2026	1,001-5,000	776 contacts →
	Partial evidence “Testing, inspection, certification and compliance is our core business so that’s what gets 100% of our focus.” Source: RevenueBase Database · checked Sep 19, 2026
3	UKAS	Indirect evidence	Staines-upon-thames, United KingdomHQ checked Sep 19, 2026	201-500	445 contacts →
	Indirect evidence “UKAS is the world’s leading #accreditation body delivering confidence in products and services, and supporting global value chains.” Source: RevenueBase Database · checked Sep 19, 2026
4	Ecogra	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	304 contacts →
	Indirect evidence “At eCOGRA, we are renowned for delivering excellence in quality, speed, and service, with a commitment to supporting your growth.” Source: RevenueBase Database · checked Sep 19, 2026
5	NQA	Partial evidence	Dunstable, United KingdomHQ checked Sep 19, 2026	501-1,000	267 contacts →
	Partial evidence “NQA is a leading global certification body, respected for providing flexible and supportive certification and training services that are technically advanced and meet the needs of…” Source: RevenueBase Database · checked Sep 19, 2026
6	Certsure LLP	Partial evidence	Luton, United KingdomHQ checked Sep 19, 2026	201-500	185 contacts →
	Partial evidence “Certsure offers industry-leading certification services, Building Regulations schemes, products and support to the construction industry.” Source: RevenueBase Database · checked Sep 19, 2026
7	Warringtonfire	Partial evidence	Warrington, United KingdomHQ checked Sep 19, 2026	201-500	177 contacts →
	Partial evidence “Warringtonfire is proud to be part of Element Materials Technology, the leader in Testing, Inspection, Certification and Calibration services.” Source: RevenueBase Database · checked Sep 19, 2026
8	British Board Of Agrément	Indirect evidence	Croxley Park, United KingdomHQ checked Sep 19, 2026	51-200	165 contacts →
	Indirect evidence “The British Board of Agrément (BBA) drives industry safety and quality by providing services that help clients through enabling innovation, identifying risk and demonstrating…” Source: RevenueBase Database · checked Sep 19, 2026
9	Kiwa UK	Partial evidence	Cheltenham, United KingdomHQ checked Sep 19, 2026	201-500	161 contacts →
	Partial evidence “Kiwa Ltd is part of the Kiwa Group, a global top 20 Testing, Inspection and Certification (TIC) organisation.” Source: RevenueBase Database · checked Sep 19, 2026
10	Amtivo Group	Partial evidence	West Malling, United KingdomHQ checked Sep 19, 2026	201-500	138 contacts →
	Partial evidence “Amtivo Group provides expert certification services for ISO standards, as well as training and related services.” Source: RevenueBase Database · checked Sep 19, 2026
11	Niceic	Partial evidence	Dunstable, United KingdomHQ checked Sep 19, 2026	201-500	131 contacts →
	Partial evidence “NICEIC is the UK’s largest certification body for electrical businesses.” Source: RevenueBase Database · checked Sep 19, 2026
12	Stroma Certification	Partial evidence	Wakefield, United KingdomHQ checked Sep 19, 2026	201-500	128 contacts →
	Partial evidence “Elmhurst Energy and Stroma Certification have merged.” Source: RevenueBase Database · checked Sep 19, 2026
13	CREST	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	501-1,000	118 contacts →
	Indirect evidence “CREST is an international not-for-profit, membership body representing the global cyber security industry.” Source: RevenueBase Database · checked Sep 19, 2026
14	Citation ISO Certification	Partial evidence	Norwich, United KingdomHQ checked Sep 19, 2026	51-200	115 contacts →
	Partial evidence “We believe in keeping ISO certification simple, so that's exactly what we do.” Source: RevenueBase Database · checked Sep 19, 2026
15	Fensa Limited	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	107 contacts →
	Indirect evidence “For consumers, FENSA is the Government scheme that is industry-backed and provides homeowner protection in the double glazing industry for windows and doors.” Source: RevenueBase Database · checked Sep 19, 2026
16	BRCGS	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	105 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
17	Isoqar	Indirect evidence	Manchester, United KingdomHQ checked Sep 19, 2026	51-200	99 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 19, 2026
18	IASME	Partial evidence	Upper Colwall, United KingdomHQ checked Sep 19, 2026	51-200	96 contacts →
	Partial evidence “IASME is a cyber security certification company based in the Malvern Hills, with an office in Belfast and one in Dalgety Bay, near Edinburgh.” Source: RevenueBase Database · checked Sep 19, 2026
19	APM Group	Indirect evidence	High Wycombe, United KingdomHQ checked Sep 19, 2026	51-200	94 contacts →
	Indirect evidence “We are a global leader for best practice solutions.” Source: RevenueBase Database · checked Sep 19, 2026
20	Phenna Group	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	5,001-10,000	89 contacts →
	Partial evidence “Phenna Group is a global family of specialist businesses delivering Testing, Inspection, Certification and Compliance (TICC) services to customers worldwide.” Source: RevenueBase Database · checked Sep 19, 2026
21	Irca International Register Of Certificated Auditors	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	88 contacts →
	Indirect evidence “Your partners in quality.” Source: RevenueBase Database · checked Sep 19, 2026
22	Alphaplus	Partial evidence	Manchester, United KingdomHQ checked Sep 19, 2026	11-50	84 contacts →
	Partial evidence “AlphaPlus is one of the UK’s leading education consultancy and service businesses, specialising in standards, assessment and certification.” Source: RevenueBase Database · checked Sep 19, 2026
23	MCS	Indirect evidence	Warrington, United KingdomHQ checked Sep 19, 2026	51-200	72 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 19, 2026
24	NSI	Partial evidence	Maidenhead, United KingdomHQ checked Sep 19, 2026	51-200	72 contacts →
	Partial evidence “NSI is the UK’s most recognised certification body for fire and security.” Source: RevenueBase Database · checked Sep 19, 2026
25	BM Trada Certification	Partial evidence	Hughenden, United KingdomHQ checked Sep 19, 2026	501-1,000	62 contacts →
	Partial evidence “BM TRADA is proud to be part of Element, the market leader in Testing, Inspection, and Certification services.” Source: RevenueBase Database · checked Sep 19, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: certification bodies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names certification bodies.
Partial evidence: Its own public description names part of certification bodies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name certification bodies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 309 certification bodies based in the United Kingdom

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Certification bodies based in the United Kingdom at a glance

As of Sep 19, 2026

49.1%Verified-email coverage

35.7Average contacts per company

1-10Median size (employees)

24.9%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

154

11-50

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 309 companies.

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 certification bodies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search 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 Smart Search, 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 “certification bodies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names certification bodies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among certification bodies, 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 its RevenueBase Smart Search 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, 5,414 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 19, 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.

Certification bodies by metro

Certification bodies in London77

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names certification bodies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

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

RevenueBase identified 309 certification bodies 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?

Element Materials Technology, headquartered in London, tops this list with the largest team on record.

Which city has the most certification bodies?

London leads with 77 headquartered companies, followed by Manchester (10) and Nottingham (4).

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 5,414 verified decision-maker contacts tracked across these 309 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 19, 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 Smart Search, 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.