Company lists · Data refreshed October 2026

Top 25 Iso personnel certification services based in the United Kingdom

Name: Iso personnel certification services based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 27, 2026 469 companies tracked

RevenueBase identified 469 company matches for iso personnel certification services associated with the United Kingdom as of October 2026 and tracks 34,717 professional contacts across them, including 12,307 with verified work emails. London is the largest hub.

This list covers company matches for iso personnel certification services 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 October 27, 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 Oct 27, 2026 How this list was built

469Companies

34,717Contacts tracked

12,307Verified emails

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The 25 largest iso personnel certification services based in the United Kingdom

Ranked by team size

Top 25 of 469 company matches for iso personnel certification services based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 27, 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	Intertek	Exact match	London, United KingdomHQ recorded Oct 27, 2026	10001+	24,130 contacts →
	Exact match “Intertek is a leading Total Quality Assurance provider to industries worldwide.” Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
2	Element Materials Technology	Exact match	London, United KingdomHQ recorded Oct 27, 2026	5,001-10,000	4,423 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 · Oct 27, 2026 · View company records in RevenueBase
3	British Engineering Services Group	Exact match	Warrington, United KingdomHQ recorded Oct 27, 2026	1,001-5,000	775 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 · Oct 27, 2026 · View company records in RevenueBase
4	UKAS	Exact match	Staines-upon-thames, United KingdomHQ recorded Oct 27, 2026	201-500	458 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 · Oct 27, 2026 · View company records in RevenueBase
5	NQA	Exact match	Dunstable, United KingdomHQ recorded Oct 27, 2026	501-1,000	276 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
6	Warringtonfire	Exact match	Warrington, United KingdomHQ recorded Oct 27, 2026	201-500	183 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 · Oct 27, 2026 · View company records in RevenueBase
7	British Board Of Agrément	Exact match	Croxley Park, United KingdomHQ recorded Oct 27, 2026	51-200	179 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 · Oct 27, 2026 · View company records in RevenueBase
8	Kiwa UK	Exact match	Cheltenham, United KingdomHQ recorded Oct 27, 2026	201-500	164 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 · Oct 27, 2026 · View company records in RevenueBase
9	Amtivo Group	Exact match	West Malling, United KingdomHQ recorded Oct 27, 2026	201-500	148 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 · Oct 27, 2026 · View company records in RevenueBase
10	Isoqar	Exact match	Manchester, United KingdomHQ recorded Oct 27, 2026	51-200	142 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 · Oct 27, 2026 · View company records in RevenueBase
11	Stroma Certification	Exact match	Wakefield, United KingdomHQ recorded Oct 27, 2026	201-500	126 contacts →
	Exact match “Elmhurst Energy and Stroma Certification have merged.” Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
12	Citation ISO Certification	Exact match	Norwich, United KingdomHQ recorded Oct 27, 2026	51-200	118 contacts →
	Exact match “We believe in keeping ISO certification simple, so that's exactly what we do.” Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
13	IASME	Exact match	Upper Colwall, United KingdomHQ recorded Oct 27, 2026	51-200	116 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 · Oct 27, 2026 · View company records in RevenueBase
14	Phenna Group	Exact match	London, United KingdomHQ recorded Oct 27, 2026	5,001-10,000	106 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 · Oct 27, 2026 · View company records in RevenueBase
15	APM Group	Exact match	High Wycombe, United KingdomHQ recorded Oct 27, 2026	51-200	91 contacts →
	Exact match “We are a global leader for best practice solutions.” Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
16	Alphaplus	Exact match	Manchester, United KingdomHQ recorded Oct 27, 2026	11-50	85 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 · Oct 27, 2026 · View company records in RevenueBase
17	Irca International Register Of Certificated Auditors	Exact match	London, United KingdomHQ recorded Oct 27, 2026	11-50	84 contacts →
	Exact match “Your partners in quality.” Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
18	NSI	Exact match	Maidenhead, United KingdomHQ recorded Oct 27, 2026	51-200	76 contacts →
	Exact match “NSI is the UK’s most recognised certification body for fire and security.” Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
19	BM Trada Certification	Exact match	Hughenden, United KingdomHQ recorded Oct 27, 2026	501-1,000	61 contacts →
	Exact match “BM TRADA is proud to be part of Element, the market leader in Testing, Inspection, and Certification services.” Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
20	Basec Group Limited Basec	Exact match	Milton Keynes, United KingdomHQ recorded Oct 27, 2026	51-200	60 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
21	International Associates Limited	Exact match	Glasgow, United KingdomHQ recorded Oct 27, 2026	51-200	54 contacts →
	Exact match “International Associates (IA) is a leading provider of assessment, audit, verification, certification and training services.” Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
22	Celnor Group	Exact match	London, United KingdomHQ recorded Oct 27, 2026	1,001-5,000	41 contacts →
	Exact match “We’re an international service provider in the Testing, Inspection, Certification and Compliance (TICC) sector.” Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
23	BTTG	Exact match	Manchester, United KingdomHQ recorded Oct 27, 2026	51-200	39 contacts →
	Exact match “BTTG® tests, audits and certifies PPE, textiles and other flexible materials.” Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
24	XDS Solutions	Exact match	Witham, United KingdomHQ recorded Oct 27, 2026	51-200	37 contacts →
	Exact match “XDS Solutions is an ISO 17065 SASO-notified certification body, with a wide technical scope covering Europe, Middle East, Africa, and Asia.” Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
25	SSAIB	Exact match	Whitley Bay, United KingdomHQ recorded Oct 27, 2026	51-200	35 contacts →
	Exact match “SSAIB (Security Systems and Alarms Inspection Board) is the leading certification body for organisations providing security systems and services, fire detection and alarm systems…” Recorded in the RevenueBase company graph · Oct 27, 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 “iso personnel certification services”. 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 469 iso personnel certification services based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 12,307 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Iso personnel certification services based in the United Kingdom at a glance

As of Oct 27, 2026

35.4%Verified-email coverage

74.0Average contacts per company

1-10Median size (employees)

18.1%Largest-city concentration · London

Oct 27, 2026Page data refreshed

Companies by employee count

1-10

301

11-50

104

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 469 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 “iso personnel certification services” 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 12,307 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 October 27, 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.

Iso personnel certification services by metro

Iso personnel certification services in London85

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

How many iso personnel certification services are there based in the United Kingdom?

RevenueBase identified 469 company matches for iso personnel certification services associated with the United Kingdom as of October 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?

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

Which city has the most iso personnel certification services?

London leads with 85 company records, followed by Manchester (15) and Aberdeen (9).

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 12,307 professional contacts with verified work emails tracked across these 469 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 October 27, 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.