Company lists · Data refreshed September 2026

Top 25 Custom test equipment manufacturers based in the United Kingdom

Name: Custom test equipment manufacturers based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 188 companies tracked

RevenueBase identified 188 custom test equipment manufacturers headquartered in the United Kingdom as of September 2026 and tracks 2,560 professional contacts across them, including 937 with verified work emails. London is the largest hub.

This list covers custom test equipment manufacturers 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 30, 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 30, 2026 86% judged on-target in blind review

188Companies

2,560Contacts tracked

937Verified emails

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The 25 largest custom test equipment manufacturers based in the United Kingdom

Ranked by team size

Top 25 of 188 custom test equipment manufacturers based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to custom test equipment manufacturers: 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	Reliance Precision Limited	Partial evidence	Huddersfield, United KingdomHQ checked Sep 30, 2026	201-500	117 contacts →
	Partial evidence “Reliance Precision is a specialist engineering company providing custom-built, high reliability, precision instrumentation and components to customers from a diverse range of…” Source: RevenueBase Database · checked Sep 30, 2026
2	Horiba UK Limited	Indirect evidence	Northampton, United KingdomHQ checked Sep 30, 2026	51-200	97 contacts →
	Indirect evidence “HORIBA UK Limited, part of the HORIBA Group of worldwide companies, provides an extensive array of instruments and systems for applications ranging from automotive R&D, process…” Source: RevenueBase Database · checked Sep 30, 2026
3	Seaward	Indirect evidence	Peterlee, United KingdomHQ checked Sep 30, 2026	51-200	83 contacts →
	Indirect evidence “With over 75 years’ experience at the cutting edge of electrical safety testing, our expertise and innovations have produced a number of world firsts.” Source: RevenueBase Database · checked Sep 30, 2026
4	PST IS NOW Dwyeromega	Indirect evidence	Ely, United KingdomHQ checked Sep 30, 2026	1,001-5,000	81 contacts →
	Indirect evidence “Process Sensing Technologies (PST) is now DwyerOmega!” Source: RevenueBase Database · checked Sep 30, 2026
5	PTSL	Strong evidence	Glasgow, United KingdomHQ checked Sep 30, 2026	51-200	81 contacts →
	Strong evidence “Probe Test Solutions Ltd (PTSL) is a world leader in delivering advanced ATE test hardware solutions to our blue chip customers globally.” Source: RevenueBase Database · checked Sep 30, 2026
6	Kane International Limited	Strong evidence	Welwyn Garden City, United KingdomHQ checked Sep 30, 2026	51-200	74 contacts →
	Strong evidence “Since 1963, Kane International Ltd has been in Welwyn Garden City, Hertfordshire, and has a long history and broad experience designing and manufacturing portable test equipment.” Source: RevenueBase Database · checked Sep 30, 2026
7	Stanhope-Seta	Strong evidence	Surrey, United KingdomHQ checked Sep 30, 2026	51-200	66 contacts →
	Strong evidence “Stanhope-Seta design and manufacture Laboratory test instruments for quality control, product consistency, research, calibration and analysis.” Source: RevenueBase Database · checked Sep 30, 2026
8	Lascar Electronics LTD	Partial evidence	Salisbury, United KingdomHQ checked Sep 30, 2026	51-200	62 contacts →
	Partial evidence “Lascar Electronics is a leading provider of digital panel instruments, data loggers and custom design & manufacturing solutions.” Source: RevenueBase Database · checked Sep 30, 2026
9	Alphr Technology	Indirect evidence	Letchworth, United KingdomHQ checked Sep 30, 2026	51-200	60 contacts →
	Indirect evidence “ALPHR Technology is a team of people with a passion for engineering.” Source: RevenueBase Database · checked Sep 30, 2026
10	TORUS	Indirect evidence	Telford, United KingdomHQ checked Sep 30, 2026	51-200	57 contacts →
	Indirect evidence “The Torus name has been recognized as a leader in measurement, automation, metrology and manufacturing for over 20 years.” Source: RevenueBase Database · checked Sep 30, 2026
11	Amfax LTD	Strong evidence	Blandford Forum, United KingdomHQ checked Sep 30, 2026	51-200	52 contacts →
	Strong evidence “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 &…” Source: RevenueBase Database · checked Sep 30, 2026
12	British Rototherm Group	Indirect evidence	Port Talbot, United KingdomHQ checked Sep 30, 2026	201-500	50 contacts →
	Indirect evidence “We are the British Rototherm Group and we have been designing the world's most accurate measurement solutions since the 1840's.” Source: RevenueBase Database · checked Sep 30, 2026
13	Torquemeters Limited	Indirect evidence	Northampton, United KingdomHQ checked Sep 30, 2026	51-200	47 contacts →
	Indirect evidence “We are an innovative engineering company with a proud heritage and a dynamic future.” Source: RevenueBase Database · checked Sep 30, 2026
14	Pass LTD	Strong evidence	Stockton-on-tees, United KingdomHQ checked Sep 30, 2026	51-200	47 contacts →
	Strong evidence “PASS Limited offers a comprehensive solution for customers including test equipment, training and calibration.” Source: RevenueBase Database · checked Sep 30, 2026
15	XJTAG	Strong evidence	Cambridge, United KingdomHQ checked Sep 30, 2026	11-50	44 contacts →
	Strong evidence “XJTAG is a world leading producer of automated test equipment, with a wide range of tools for complex debug, test and programming.” Source: RevenueBase Database · checked Sep 30, 2026
16	Mecmesin	Indirect evidence	Slinfold, United KingdomHQ checked Sep 30, 2026	51-200	38 contacts →
	Indirect evidence “Tensile testing, compression testing, materials testing and torque testing machines from Mecmesin are used in R&D and quality control laboratories and manufacturing plants around…” Source: RevenueBase Database · checked Sep 30, 2026
17	Isotech	Strong evidence	Southport, United KingdomHQ checked Sep 30, 2026	51-200	35 contacts →
	Strong evidence “Temperature Calibration Equipment & Services Isotech is a world leader in temperature calibration with over 45 years' experience in the design, manufacture and use of temperature…” Source: RevenueBase Database · checked Sep 30, 2026
18	JWF	Partial evidence	Glasgow, United KingdomHQ checked Sep 30, 2026	11-50	34 contacts →
	Partial evidence “JWF Group are made up of three distinct areas to give us our competitive advantage in meeting customers’ expectations.” Source: RevenueBase Database · checked Sep 30, 2026
19	Scotia Instrumentation Limited	Strong evidence	Aberdeen, United KingdomHQ checked Sep 30, 2026	51-200	29 contacts →
	Strong evidence “Scotia Instrumentation is a specialist calibration, repair, hire & sales organisation providing services across a range of precision instrumentation and test equipment.” Source: RevenueBase Database · checked Sep 30, 2026
20	SGA Technologies Limited	Partial evidence	Saffron Walden, United KingdomHQ checked Sep 30, 2026	51-200	29 contacts →
	Partial evidence “When your application demands zero failure, you need a manufacturer you can trust completely.” Source: RevenueBase Database · checked Sep 30, 2026
21	Micro Precision	Strong evidence	Maidstone, United KingdomHQ checked Sep 30, 2026	51-200	27 contacts →
	Strong evidence “Offering a comprehensive solution to meet the demands of Test & Measurement professionals both nationally and internationally, including Test Equipment Sales, Calibration…” Source: RevenueBase Database · checked Sep 30, 2026
22	Zwickroell UK & Ireland	Indirect evidence	Worcester, United KingdomHQ checked Sep 30, 2026	51-200	25 contacts →
	Indirect evidence “ZwickRoell is a leading, global supplier of materials and component testing machines.” Source: RevenueBase Database · checked Sep 30, 2026
23	Gen3	Indirect evidence	Farnborough, United KingdomHQ checked Sep 30, 2026	11-50	22 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026
24	Young Calibration LTD	Partial evidence	Shoreham By Sea, United KingdomHQ checked Sep 30, 2026	11-50	20 contacts →
	Partial evidence “Young Calibration, part of the NMi Group, operates an ISO 17025 Calibration and Thermal Test facility in Shoreham by Sea, West Sussex, UK.” Source: RevenueBase Database · checked Sep 30, 2026
25	ABI Electronics	Partial evidence	Barnsley, United KingdomHQ checked Sep 30, 2026	11-50	19 contacts →
	Partial evidence “Established in 1983 in the United Kingdom, ABI Electronics enables organisations worldwide to understand, test, repair and sustain electronic systems at component level.” Source: RevenueBase Database · checked Sep 30, 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: custom test equipment manufacturers. 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 custom test equipment manufacturers.
Partial evidence: Its own public description names part of custom test equipment manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name custom test equipment manufacturers. 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 188 custom test equipment manufacturers based in the United Kingdom

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Custom test equipment manufacturers based in the United Kingdom at a glance

As of Sep 30, 2026

36.6%Verified-email coverage

13.6Average contacts per company

11-50Median size (employees)

4.8%Largest-city concentration · London

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

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 188 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 custom test equipment manufacturers, 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 “custom test equipment manufacturers”. 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 custom test equipment manufacturers), 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 custom test equipment manufacturers, 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, 937 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 30, 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.

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 custom test equipment manufacturers, 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 custom test equipment manufacturers are there based in the United Kingdom?

RevenueBase identified 188 custom test equipment manufacturers 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?

Reliance Precision Limited, headquartered in Huddersfield, tops this list with the largest team on record.

Which city has the most custom test equipment manufacturers?

London leads with 9 headquartered companies, followed by Birmingham (4) and Northampton (3).

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 937 verified decision-maker contacts tracked across these 188 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 30, 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.