Company lists · Data refreshed September 2026

Top 25 Quality assurance inspection companies based in the United Kingdom

Name: Quality assurance inspection 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 190 companies tracked

RevenueBase identified 190 quality assurance inspection companies headquartered in the United Kingdom as of September 2026 and tracks 31,590 professional contacts across them, including 10,963 with verified work emails. London is the largest hub.

This list covers quality assurance inspection 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

190Companies

31,590Contacts tracked

10,963Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest quality assurance inspection companies based in the United Kingdom

Ranked by team size

Top 25 of 190 quality assurance inspection 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 assurance inspection 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	Strong evidence	London, United KingdomHQ checked Sep 21, 2026	10001+	23,155 contacts →
	Strong evidence “Intertek is a leading Total Quality Assurance provider to industries worldwide.” Source: RevenueBase Database · checked Sep 21, 2026
2	Element Materials Technology	Partial evidence	London, United KingdomHQ checked Sep 21, 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 21, 2026
3	Socotec UK & Ireland	Indirect evidence	Burton Upon Trent, United KingdomHQ checked Sep 21, 2026	1,001-5,000	844 contacts →
	Indirect evidence “SOCOTEC UK is a network of industry-leading experts we empower ambitious businesses at every stage of the asset lifecycle.” Source: RevenueBase Database · checked Sep 21, 2026
4	British Engineering Services Group	Partial evidence	Warrington, United KingdomHQ checked Sep 21, 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 21, 2026
5	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
6	Hqts Group	Strong evidence	London, United KingdomHQ checked Sep 21, 2026	1,001-5,000	250 contacts →
	Strong evidence “Since 1987 HQTS has delivered product inspections, factory audits, testing and quality consulting throughout Asia.” Source: RevenueBase Database · checked Sep 21, 2026
7	Fulkrum	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	201-500	244 contacts →
	Partial evidence “Fulkrum has been providing Inspection, Expediting, AIM/RBI, Technical Staffing, and Specialist QA/QC Personnel to the Energy Industry since 2011.” Source: RevenueBase Database · checked Sep 21, 2026
8	Warringtonfire	Partial evidence	Warrington, United KingdomHQ checked Sep 21, 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 21, 2026
9	Phenna Group	Partial evidence	London, United KingdomHQ checked Sep 21, 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 21, 2026
10	Qniverse	Strong evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	70 contacts →
	Strong evidence “Qniverse is your trusted Quality Assurance service partner that stands at the forefront of a paradigm shift in QA by redefining quality.” Source: RevenueBase Database · checked Sep 21, 2026
11	BM Trada Certification	Partial evidence	Hughenden, United KingdomHQ checked Sep 21, 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 21, 2026
12	Basec Group Limited Basec	Indirect evidence	Milton Keynes, United KingdomHQ checked Sep 21, 2026	51-200	55 contacts →
	Indirect evidence “BASEC Group Limited, a part of Kiwa, is a global leader in product testing and certification services for power, energy, data/signal cables and ancillary products, in addition to…” Source: RevenueBase Database · checked Sep 21, 2026
13	Eurofins E&e UK	Indirect evidence	York, United KingdomHQ checked Sep 21, 2026	51-200	53 contacts →
	Indirect evidence “Eurofins E&E UK provides a comprehensive range of testing, certification and compliance services for designers and manufacturers of electronic and electrical products.” Source: RevenueBase Database · checked Sep 21, 2026
14	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
15	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
16	Auto-Scan	Strong evidence	Telford, United KingdomHQ checked Sep 21, 2026	501-1,000	44 contacts →
	Strong evidence “AUTOSCAN (UK) LIMITED Provides Quality Inspection, Containment & Quality Engineering Services to the Automotive, Off Highway, and all types of manufacturing industries and their…” Source: RevenueBase Database · checked Sep 21, 2026
17	Bureau Technical Services	Partial evidence	Hessle, United KingdomHQ checked Sep 21, 2026	11-50	43 contacts →
	Partial evidence “A world-class provider of Inspection Services including; QA/QC Surveillance, Project Management and Technical Manpower.” Source: RevenueBase Database · checked Sep 21, 2026
18	Celnor Group	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	1,001-5,000	34 contacts →
	Partial evidence “We’re an international service provider in the Testing, Inspection, Certification and Compliance (TICC) sector.” Source: RevenueBase Database · checked Sep 21, 2026
19	Control Union UK	Partial evidence	Winchester, United KingdomHQ checked Sep 21, 2026	11-50	22 contacts →
	Partial evidence “Control Union (UK) is an independent, accredited certification and inspection body helping businesses confidently navigate sustainability.” Source: RevenueBase Database · checked Sep 21, 2026
20	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
21	Inspection And Consultancy Services Limited	Partial evidence	Westerham, United KingdomHQ checked Sep 21, 2026	51-200	20 contacts →
	Partial evidence “INSPECTION AND CONSULTANCY SERVICES LIMITED is an inspection and consulting company based out of Westerham, United Kingdom.” Source: RevenueBase Database · checked Sep 21, 2026
22	Glocert International	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	14 contacts →
	Partial evidence “Glocert International is an emerging leader in the Testing, Inspection and Certification (TIC) industry.” Source: RevenueBase Database · checked Sep 21, 2026
23	RPG Qaqc	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 21, 2026	11-50	13 contacts →
	Indirect evidence “International QAQC Services” Source: RevenueBase Database · checked Sep 21, 2026
24	Critical Flow Systems LTD	Indirect evidence	Cheltenham, United KingdomHQ checked Sep 21, 2026	11-50	12 contacts →
	Indirect evidence “Who are we?” Source: RevenueBase Database · checked Sep 21, 2026
25	Rossendale Group LTD	Partial evidence	Ellesmere Port, United KingdomHQ checked Sep 21, 2026	11-50	12 contacts →
	Partial evidence “Rossendale Group provides specialist engineering design and manufacturing services and is a leading nationwide inspection, testing and certification company.” 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 assurance inspection 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 assurance inspection companies.
Partial evidence: Its own public description names part of quality assurance inspection companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name quality assurance inspection 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 190 quality assurance inspection companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 10,963 reachable decision-makers.

Free signup · no credit card

View the full list →

Quality assurance inspection companies based in the United Kingdom at a glance

As of Sep 21, 2026

34.7%Verified-email coverage

166.3Average contacts per company

1-10Median size (employees)

24.2%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

107

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 190 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 assurance inspection 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 assurance inspection 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 assurance inspection 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 assurance inspection 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, 10,963 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 assurance inspection companies by metro

Quality assurance inspection companies in London46

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 assurance inspection 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 assurance inspection companies are there based in the United Kingdom?

RevenueBase identified 190 quality assurance inspection 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 assurance inspection companies?

London leads with 46 headquartered companies, followed by Aberdeen (6) and Manchester (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 10,963 verified decision-maker contacts tracked across these 190 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.

Ready to reach these companies? Verified emails and direct dials for all 190 quality assurance inspection companies based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

Quality assurance inspection companies by geography

Browse the directory

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.