Company lists · Data refreshed September 2026

Top 25 Quality management system companies based in the United Kingdom

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

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 346 companies tracked

RevenueBase identified 346 quality management system companies headquartered in the United Kingdom as of September 2026 and tracks 27,557 professional contacts across them, including 8,633 with verified work emails. London is the largest hub.

This list covers quality management system companies 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 21, 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 21, 2026 86% judged on-target in blind review

346Companies

27,557Contacts tracked

8,633Verified emails

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The 25 largest quality management system companies based in the United Kingdom

Ranked by team size

Top 25 of 346 quality management system companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to quality management system companies: 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	Intertek	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	10001+	23,155 contacts →
	Partial evidence “Intertek is a leading Total Quality Assurance provider to industries worldwide.” Source: RevenueBase Database · checked Sep 21, 2026
2	British Engineering Services Group	Indirect evidence	Warrington, United KingdomHQ checked Sep 21, 2026	1,001-5,000	776 contacts →
	Indirect evidence “Testing, inspection, certification and compliance is our core business so that’s what gets 100% of our focus.” Source: RevenueBase Database · checked Sep 21, 2026
3	UKAS	Indirect evidence	Staines-upon-thames, United KingdomHQ checked Sep 21, 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 21, 2026
4	The Citation Group	Partial evidence	Wilmslow, United KingdomHQ checked Sep 21, 2026	1,001-5,000	291 contacts →
	Partial evidence “The Citation Group offer unrivalled compliance and quality services to over businesses across the UK, Australia, New Zealand, and Canada.” Source: RevenueBase Database · checked Sep 21, 2026
5	NQA	Indirect evidence	Dunstable, United KingdomHQ checked Sep 21, 2026	501-1,000	267 contacts →
	Indirect 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 21, 2026
6	G&p Quality Management Group	Strong evidence	Birmingham, United KingdomHQ checked Sep 21, 2026	1,001-5,000	196 contacts →
	Strong evidence “Established in 1994, G&P is a world-leading provider of quality management services to the manufacturing industry, primarily in the automotive, aerospace and off-highway sectors.” Source: RevenueBase Database · checked Sep 21, 2026
7	Amtivo Group	Indirect evidence	West Malling, United KingdomHQ checked Sep 21, 2026	201-500	138 contacts →
	Indirect evidence “Amtivo Group provides expert certification services for ISO standards, as well as training and related services.” Source: RevenueBase Database · checked Sep 21, 2026
8	CQI The Chartered Quality Institute	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	110 contacts →
	Partial evidence “Your partners in quality.” Source: RevenueBase Database · checked Sep 21, 2026
9	BRCGS	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	105 contacts →
	Indirect 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 21, 2026
10	Isoqar	Indirect evidence	Manchester, United KingdomHQ checked Sep 21, 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 21, 2026
11	International Associates Limited	Indirect evidence	Glasgow, United KingdomHQ checked Sep 21, 2026	51-200	50 contacts →
	Indirect evidence “International Associates (IA) is a leading provider of assessment, audit, verification, certification and training services.” Source: RevenueBase Database · checked Sep 21, 2026
12	Zigzag QA	Partial evidence	Abingdon, United KingdomHQ checked Sep 21, 2026	11-50	47 contacts →
	Partial evidence “ZigZag QA is your trusted worldwide quality leader, offering true global reach and unrivaled expertise to reduce risk and efforts.” Source: RevenueBase Database · checked Sep 21, 2026
13	Gael LTD	Partial evidence	East Kilbride, United KingdomHQ checked Sep 21, 2026	51-200	30 contacts →
	Partial evidence “Since 1992, we have developed solutions to encourage organisations to focus on what’s important when managing quality, safety and risk.” Source: RevenueBase Database · checked Sep 21, 2026
14	Clear Quality Limited	Partial evidence	Rotherham, United KingdomHQ checked Sep 21, 2026	11-50	28 contacts →
	Partial evidence “Clear Quality is a professional ISO Consultancy business and Prime Training provider based in South Yorkshire.” Source: RevenueBase Database · checked Sep 21, 2026
15	Simply Certification	Indirect evidence	Jarrow, United KingdomHQ checked Sep 21, 2026	1-10	21 contacts →
	Indirect evidence “The certification body of choice for the built environment.” Source: RevenueBase Database · checked Sep 21, 2026
16	TPT Consultancy & Training LTD	Indirect evidence	Merthyr Tydfil, United KingdomHQ checked Sep 21, 2026	1-10	21 contacts →
	Indirect evidence “TPT is a leading provider of training and consultancy, serving customers around the world.” Source: RevenueBase Database · checked Sep 21, 2026
17	ATC International Group LTD	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	21 contacts →
	Indirect evidence “ATC International is based in the United Kingdom and provides international conformity assessment and certification services across the world.” Source: RevenueBase Database · checked Sep 21, 2026
18	Bemcon	Partial evidence	Manchester, United KingdomHQ checked Sep 21, 2026	51-200	19 contacts →
	Partial evidence “Business Excellence & Management Consortium (BEMCON) is a professional training, consulting, and auditing organization specializing in ISO standards, occupational health & safety…” Source: RevenueBase Database · checked Sep 21, 2026
19	CQS Certified Quality Systems Limited	Strong evidence	Malvern, United KingdomHQ checked Sep 21, 2026	11-50	18 contacts →
	Strong evidence “CQS (Certified Quality Systems) Ltd delivers straightforward, practical ISO certification with over 25 years of experience.” Source: RevenueBase Database · checked Sep 21, 2026
20	Aviso Consultancy LTD	Strong evidence	Southwark, United KingdomHQ checked Sep 21, 2026	11-50	17 contacts →
	Strong evidence “AvISO Consultancy helps organisations build management systems that genuinely work in practice.” Source: RevenueBase Database · checked Sep 21, 2026
21	Blackmores UK LTD	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	17 contacts →
	Indirect evidence “ISO Standards can help you improve efficiency, reduce costs and increase tender opportunities.” Source: RevenueBase Database · checked Sep 21, 2026
22	Bywater	Strong evidence	Esher, United KingdomHQ checked Sep 21, 2026	11-50	16 contacts →
	Strong evidence “Our goal is to help organisations run more effective management systems, improve the quality of their products and services, and support them in achieving their own goals.” Source: RevenueBase Database · checked Sep 21, 2026
23	CFE Certification TR	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	15 contacts →
	Indirect evidence “CFE Certification, IAS (International Accreditation Service) ve UKAS (United Kingdom Accreditation Service) tarafından akredite edilmiş uluslararası bir belgelendirme kuruluşudur…” Source: RevenueBase Database · checked Sep 21, 2026
24	Quadra LTD	Strong evidence	Holywood, United KingdomHQ checked Sep 21, 2026	11-50	13 contacts →
	Strong evidence “Quadra is a management systems consultancy and training organisation specialising in implementing management systems to international standards to include: Quality (ISO…” Source: RevenueBase Database · checked Sep 21, 2026
25	Lucideon Cics	Strong evidence	Stoke On Trent, United KingdomHQ checked Sep 21, 2026	11-50	12 contacts →
	Strong evidence “Lucideon CICS Limited provides sustainability assurance, management systems certification, product certification and training Assurance Services include third party independent…” Source: RevenueBase Database · checked Sep 21, 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: quality management system companies. 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 quality management system companies.
Partial evidence: Its own public description names part of quality management system companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name quality management system companies. 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 346 quality management system companies based in the United Kingdom

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Quality management system companies based in the United Kingdom at a glance

As of Sep 21, 2026

31.3%Verified-email coverage

79.6Average contacts per company

1-10Median size (employees)

14.7%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

252

11-50

51-200

201-500

501-1,000

1,001-5,000

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 346 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 quality management system companies, 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 “quality management system companies”. 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 quality management system companies), 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 quality management system companies, 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, 8,633 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 21, 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.

Quality management system companies by metro

Quality management system companies in London51

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 quality management system companies, 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 quality management system companies are there based in the United Kingdom?

RevenueBase identified 346 quality management system companies 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?

Intertek, headquartered in London, tops this list with the largest team on record.

Which city has the most quality management system companies?

London leads with 51 headquartered companies, followed by Manchester (11) and Aberdeen (8).

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 8,633 verified decision-maker contacts tracked across these 346 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 21, 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.