Company lists · Data refreshed November 2026

Top 25 Test sets suppliers based in the United Kingdom

RevenueBase identified 85 company matches for test sets suppliers associated with the United Kingdom as of November 2026 and tracks 2,257 professional contacts across them, including 1,210 with verified work emails. Harrow is the largest hub.

This list covers company matches for test sets suppliers 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 November 2, 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 Nov 2, 2026 How this list was built
85Companies
2,257Contacts tracked
1,210Verified emails
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The 25 largest test sets suppliers based in the United Kingdom

Ranked by team size
Top 25 of 85 company matches for test sets suppliers based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 2, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchDover, United KingdomHQ recorded Nov 2, 20261,001-5,0001,163 contacts →

Exact match

“Megger supports the people who keep essential services running.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
2Exact matchPeterlee, United KingdomHQ recorded Nov 2, 202651-20081 contacts →

Exact match

“With over 75 years’ experience at the cutting edge of electrical safety testing, our expertise and innovations have produced a number of world firsts.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
3Exact matchHarrow, United KingdomHQ recorded Nov 2, 2026201-50073 contacts →

Exact match

“We are the experts in test and measurement equipment, with the largest, most comprehensive test equipment service provider, supporting market-leading customers around the world.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
4Exact matchEly, United KingdomHQ recorded Nov 2, 20261,001-5,00060 contacts →

Exact match

“Process Sensing Technologies (PST) is now DwyerOmega!”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
5Exact matchBlandford Forum, United KingdomHQ recorded Nov 2, 202651-20059 contacts →

Exact match

“Amfax is a world class test system solutions provider, delivering high quality, high performance and cost effective automated test equipment to the aerospace, defence, rail &…”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
6Exact matchYork, United KingdomHQ recorded Nov 2, 202651-20053 contacts →

Exact match

“Eurofins E&E UK provides a comprehensive range of testing, certification and compliance services for designers and manufacturers of electronic and electrical products.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
7Exact matchStockton-on-tees, United KingdomHQ recorded Nov 2, 202651-20053 contacts →

Exact match

“PASS Limited offers a comprehensive solution for customers including test equipment, training and calibration.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
8Exact matchWatford, United KingdomHQ recorded Nov 2, 202611-5035 contacts →

Exact match

“With over 95 years of experience, Martindale Electric is one of the most trusted brands in electrical safety testing.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
9Exact matchWorcester, United KingdomHQ recorded Nov 2, 202651-20029 contacts →

Exact match

“ZwickRoell is a leading, global supplier of materials and component testing machines.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
10Exact matchMaidstone, United KingdomHQ recorded Nov 2, 202651-20028 contacts →

Exact match

“Offering a comprehensive solution to meet the demands of Test & Measurement professionals both nationally and internationally, including Test Equipment Sales, Calibration…”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
11Exact matchFarnborough, United KingdomHQ recorded Nov 2, 202611-5022 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
12Exact matchReading, United KingdomHQ recorded Nov 2, 202611-5018 contacts →

Exact match

“Elite Interfaces Ltd are specialists in the supply, design and manufacture of Test Solutions and Services for the Electronics Manufacturing Industry ranging from Flying Probe…”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
13Exact matchHuntingdon, United KingdomHQ recorded Nov 2, 202651-20018 contacts →

Exact match

“Aim-TTi designs and manufactures advanced electronic test and measurement equipment and laboratory power supplies in the UK.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
14Exact matchBlisworth, United KingdomHQ recorded Nov 2, 202611-5017 contacts →

Exact match

“We are the UK’s leading provider of automated testing solutions for electronic and electrical products.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
15Exact matchNorthwich, United KingdomHQ recorded Nov 2, 202611-5017 contacts →

Exact match

“Turnkey Instruments Ltd is a leading designer and manufacturer of quality industrial and scientific instrumentation ranging from heavy vehicle brake testers to air quality…”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
16Exact matchWatford, United KingdomHQ recorded Nov 2, 202611-5016 contacts →

Exact match

“Tel:+44 (0)1923 442244 Email: sales@instrotech.com Instrotech is a specialist distributor of electrical and environmental test equipment representing all of the major brands.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
17Exact matchKettering, United KingdomHQ recorded Nov 2, 202611-5016 contacts →

Exact match

“Technical distributor of electronic and electrical test and measurement equipment and electrical, temperature and pressure calibration systems.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
18Exact matchDursley, United KingdomHQ recorded Nov 2, 202611-5015 contacts →

Exact match

“Reltech Limited founded in 1976 is an Independent Test Laboratory, Burn-In and HTOL system manufacturer serving the Semiconductor and Microelectronics industries.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
19Exact matchTelford, United KingdomHQ recorded Nov 2, 202611-5015 contacts →

Exact match

“Since Comar’s inception in 1978 we have become a leader in designing and developing test equipment; we have supplied in excess of a test solutions to industry many of which are in…”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
20Exact matchLetchworth Garden City, United KingdomHQ recorded Nov 2, 202651-20011 contacts →

Exact match

“The Peak Group is a proven provider of automated test and measurement solutions supporting every stage of the assembly process from component testing to highly complex functional…”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
21Exact matchGreat Yarmouth, United KingdomHQ recorded Nov 2, 202611-5011 contacts →

Exact match

“TVC is a technology and service company that has been providing safety-critical solutions to industry sectors around the globe since 1995.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
22Exact matchHarrow, United KingdomHQ recorded Nov 2, 2026201-50011 contacts →

Exact match

“Welcome to Microlease, experts in Test and Measurement equipment and the leading source for equipment supply and management.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
23Exact matchDerby, United KingdomHQ recorded Nov 2, 20261-108 contacts →

Exact match

“From the heart of the Industrial Revolution, Devtank is disrupting the industry with their award-winning production testing and smart monitoring solutions.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
24Exact matchStoke-on-trent, United KingdomHQ recorded Nov 2, 202611-508 contacts →

Exact match

“Jackmark is a UK-based specialist in the design, development and manufacture of reliable electrical functional test equipment, primarily serving the automotive industry while also…”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
25Exact matchLeeds, United KingdomHQ recorded Nov 2, 20261-107 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase

Showing 25 of 85 test sets suppliers based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 1,210 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Test sets suppliers based in the United Kingdom at a glance

As of Nov 2, 2026
53.6%Verified-email coverage
26.6Average contacts per company
11-50Median size (employees)
4.7%Largest-city concentration · Harrow
Nov 2, 2026Page data refreshed

Companies by employee count

1-10
26
11-50
34
51-200
16
201-500
3
501-1,000
2
1,001-5,000
3

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 85 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 “test sets suppliers” 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 1,210 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 November 2, 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.

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 “test sets suppliers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many test sets suppliers are there based in the United Kingdom?

RevenueBase identified 85 company matches for test sets suppliers associated with the United Kingdom as of November 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?

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

Which city has the most test sets suppliers?

Harrow leads with 4 company records, followed by London (4) and Watford (3).

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 1,210 professional contacts with verified work emails tracked across these 85 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 November 2, 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.