Company lists · Data refreshed September 2026

Top 25 Inspection service providers based in the United Kingdom

Name: Inspection service providers based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 455 companies tracked

RevenueBase identified 455 inspection service providers headquartered in the United Kingdom as of September 2026 and tracks 35,905 professional contacts across them, including 12,510 with verified work emails. London is the largest hub.

This list covers inspection service providers 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 20, 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 20, 2026 86% judged on-target in blind review

455Companies

35,905Contacts tracked

12,510Verified emails

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The 25 largest inspection service providers based in the United Kingdom

Ranked by team size

Top 25 of 455 inspection service providers based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to inspection service providers: 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	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	10001+	23,155 contacts →
	Indirect evidence “Intertek is a leading Total Quality Assurance provider to industries worldwide.” Source: RevenueBase Database · checked Sep 20, 2026
2	Element Materials Technology	Strong evidence	London, United KingdomHQ checked Sep 20, 2026	5,001-10,000	4,200 contacts →
	Strong 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 20, 2026
3	Alfred H Knight	Strong evidence	Prescot, United KingdomHQ checked Sep 20, 2026	1,001-5,000	2,239 contacts →
	Strong evidence “Alfred H Knight is a leading provider of inspection, analytical and technical consultancy services for the metals, minerals, solid fuels and agricultural industries.” Source: RevenueBase Database · checked Sep 20, 2026
4	Socotec UK & Ireland	Indirect evidence	Burton Upon Trent, United KingdomHQ checked Sep 20, 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 20, 2026
5	British Engineering Services Group	Strong evidence	Warrington, United KingdomHQ checked Sep 20, 2026	1,001-5,000	776 contacts →
	Strong evidence “Testing, inspection, certification and compliance is our core business so that’s what gets 100% of our focus.” Source: RevenueBase Database · checked Sep 20, 2026
6	The Citation Group	Indirect evidence	Wilmslow, United KingdomHQ checked Sep 20, 2026	1,001-5,000	291 contacts →
	Indirect 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 20, 2026
7	Hqts Group	Strong evidence	London, United KingdomHQ checked Sep 20, 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 20, 2026
8	Warringtonfire	Strong evidence	Warrington, United KingdomHQ checked Sep 20, 2026	201-500	177 contacts →
	Strong 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 20, 2026
9	British Board Of Agrément	Indirect evidence	Croxley Park, United KingdomHQ checked Sep 20, 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 20, 2026
10	Alex Stewart International	Strong evidence	Aintree, United KingdomHQ checked Sep 20, 2026	501-1,000	154 contacts →
	Strong evidence “Alex Stewart International is a leading worldwide supervision, inspection, and analysis.” Source: RevenueBase Database · checked Sep 20, 2026
11	Stroma Building Control	Indirect evidence	Wakefield, United KingdomHQ checked Sep 20, 2026	201-500	144 contacts →
	Indirect evidence “Stroma Building Control provides Approved Inspector services to advise clients on compliance with the Building Regulations on residential, commercial and mixed use projects.” Source: RevenueBase Database · checked Sep 20, 2026
12	Allianz Engineering Inspection	Strong evidence	Guildford, United KingdomHQ checked Sep 20, 2026	501-1,000	116 contacts →
	Strong evidence “The leaders in engineering inspection services for the UK & Republic of Ireland.” Source: RevenueBase Database · checked Sep 20, 2026
13	Phenna Group	Strong evidence	London, United KingdomHQ checked Sep 20, 2026	5,001-10,000	89 contacts →
	Strong 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 20, 2026
14	AXIOM	Strong evidence	Stockton-on-tees, United KingdomHQ checked Sep 20, 2026	51-200	80 contacts →
	Strong evidence “AXIOM combine expertise in Inspection & NDT, Materials and Mechanical Engineering with Process Safety Services to identify and mitigate key through-life risks across the entire…” Source: RevenueBase Database · checked Sep 20, 2026
15	Minton, Treharne & Davies Group	Indirect evidence	Cardiff, United KingdomHQ checked Sep 20, 2026	51-200	66 contacts →
	Indirect evidence “The Minton Treharne & Davies Group provide scientific consultancy, surveying and testing services to a worldwide client base from our offices in the UK, USA and Asia.” Source: RevenueBase Database · checked Sep 20, 2026
16	The Building Safety Group	Strong evidence	Bristol, United KingdomHQ checked Sep 20, 2026	11-50	65 contacts →
	Strong evidence “The Building Safety Group (BSG) provides professional HS & E site inspections, training and advice for the construction industry.” Source: RevenueBase Database · checked Sep 20, 2026
17	ADC Energy LTD	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 20, 2026	11-50	62 contacts →
	Indirect evidence “ADC Energy Ltd.(formerly Aberdeen Drilling Consultants) is an international, family owned company with a worldwide reputation, gained by providing the highest standard of Rig…” Source: RevenueBase Database · checked Sep 20, 2026
18	BM Trada Certification	Strong evidence	Hughenden, United KingdomHQ checked Sep 20, 2026	501-1,000	62 contacts →
	Strong evidence “BM TRADA is proud to be part of Element, the market leader in Testing, Inspection, and Certification services.” Source: RevenueBase Database · checked Sep 20, 2026
19	International Associates Limited	Indirect evidence	Glasgow, United KingdomHQ checked Sep 20, 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 20, 2026
20	NDT Group	Strong evidence	Deeside, United KingdomHQ checked Sep 20, 2026	11-50	48 contacts →
	Strong evidence “We protect people, assets and the environment in high-risk industries through precise, responsive and reporting-led inspection services that give our clients total confidence in…” Source: RevenueBase Database · checked Sep 20, 2026
21	GCS Compliance	Indirect evidence	Rochester, United KingdomHQ checked Sep 20, 2026	11-50	47 contacts →
	Indirect evidence “GCS Compliance Ltd are a specialist independent auditing company providing quality safety, expert technical, compliance management consultancy services and professional training…” Source: RevenueBase Database · checked Sep 20, 2026
22	SPGL	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	51-200	45 contacts →
	Indirect evidence “ABOUT US Who Are We?” Source: RevenueBase Database · checked Sep 20, 2026
23	Zeta Services	Indirect evidence	Bicester, United KingdomHQ checked Sep 20, 2026	51-200	44 contacts →
	Indirect evidence “At Zeta Services, we understand that managing health, safety and environmental obligations in the workplace can be a demanding and complicated process.” Source: RevenueBase Database · checked Sep 20, 2026
24	Auto-Scan	Strong evidence	Telford, United KingdomHQ checked Sep 20, 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 20, 2026
25	Bureau Technical Services	Strong evidence	Hessle, United KingdomHQ checked Sep 20, 2026	11-50	43 contacts →
	Strong evidence “A world-class provider of Inspection Services including; QA/QC Surveillance, Project Management and Technical Manpower.” Source: RevenueBase Database · checked Sep 20, 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: inspection service providers. 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 inspection service providers.
Partial evidence: Its own public description names part of inspection service providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name inspection service providers. 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 455 inspection service providers based in the United Kingdom

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Inspection service providers based in the United Kingdom at a glance

As of Sep 20, 2026

34.8%Verified-email coverage

78.9Average contacts per company

1-10Median size (employees)

14.7%Largest-city concentration · London

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

268

11-50

116

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 455 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 inspection service providers, 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 “inspection service providers”. 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 inspection service providers), 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 inspection service providers, 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, 12,510 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 20, 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.

Inspection service providers by metro

Inspection service providers in London67

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 inspection service providers, 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 inspection service providers are there based in the United Kingdom?

RevenueBase identified 455 inspection service providers 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 inspection service providers?

London leads with 67 headquartered companies, followed by Aberdeen (10) and Manchester (9).

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 12,510 verified decision-maker contacts tracked across these 455 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 20, 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.