Company lists · Data refreshed September 2026

Top 25 Marine instrumentation calibration services based in the United Kingdom

Name: Marine instrumentation calibration services 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 87 companies tracked

RevenueBase identified 87 marine instrumentation calibration services headquartered in the United Kingdom as of September 2026 and tracks 551 professional contacts across them, including 202 with verified work emails. Lincoln is the largest hub.

This list covers marine instrumentation calibration services 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

87Companies

551Contacts tracked

202Verified emails

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The 25 largest marine instrumentation calibration services based in the United Kingdom

Ranked by team size

Top 25 of 87 marine instrumentation calibration services 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 marine instrumentation calibration services: 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	Effectech	Partial evidence	Uttoxeter, United KingdomHQ checked Sep 20, 2026	11-50	36 contacts →
	Partial evidence “EffecTech is a global leading provider of accredited calibration and testing services to the oil, gas and power industries.” Source: RevenueBase Database · checked Sep 20, 2026
2	Isotech	Partial evidence	Southport, United KingdomHQ checked Sep 20, 2026	51-200	35 contacts →
	Partial 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 20, 2026
3	JWF	Indirect evidence	Glasgow, United KingdomHQ checked Sep 20, 2026	11-50	34 contacts →
	Indirect 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 20, 2026
4	Scotia Instrumentation Limited	Strong evidence	Aberdeen, United KingdomHQ checked Sep 20, 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 20, 2026
5	Rhopoint Metrology LTD	Partial evidence	Birmingham, United KingdomHQ checked Sep 20, 2026	11-50	27 contacts →
	Partial evidence “Rhopoint Metrology Limited part of the Rhopoint Group is a UKAS accredited Calibration Laboratory specialising in Dimensional, Mechanical, Electrical, Pressure, Torque, Force…” Source: RevenueBase Database · checked Sep 20, 2026
6	Electroserv	Partial evidence	Macclesfield, United KingdomHQ checked Sep 20, 2026	11-50	20 contacts →
	Partial evidence “Electroserv has five decades of experience and expertise in the supply of process control instrumentation.” Source: RevenueBase Database · checked Sep 20, 2026
7	Young Calibration LTD	Partial evidence	Shoreham By Sea, United KingdomHQ checked Sep 20, 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 20, 2026
8	AML Instruments LTD	Partial evidence	Lincoln, United KingdomHQ checked Sep 20, 2026	11-50	11 contacts →
	Partial evidence “AML Instruments are a test equipment calibration, repair, service, and supply specialist, dedicated to supporting businesses throughout the UK and across Europe.” Source: RevenueBase Database · checked Sep 20, 2026
9	Alpha Calibration Services LTD	Partial evidence	Wells, United KingdomHQ checked Sep 20, 2026	1-10	11 contacts →
	Partial evidence “Alpha Calibration Services Was formed in 2006 to provide a dedicated "On site" calibration service with unparalleled customer satisfaction.” Source: RevenueBase Database · checked Sep 20, 2026
10	Chamois Metrology LTD	Partial evidence	Southam, United KingdomHQ checked Sep 20, 2026	11-50	9 contacts →
	Partial evidence “NMi Performance, delivered through Chamois Metrology, helps you maintain confidence in your measurements through UKAS-accredited pressure, electrical, and temperature calibration…” Source: RevenueBase Database · checked Sep 20, 2026
11	Humber Bank Instruments	Partial evidence	Grimsby, United KingdomHQ checked Sep 20, 2026	1-10	9 contacts →
	Partial evidence “HBI offers over 20 years of instrumentation experience and knowledge on COMAH sites.” Source: RevenueBase Database · checked Sep 20, 2026
12	UK Flowtechnik LTD	Partial evidence	Nottingham, United KingdomHQ checked Sep 20, 2026	11-50	8 contacts →
	Partial evidence “UK Flowtechnik ltd are suppliers of flow meters, instrumentation, pumps, magnetic couplings & hydraulic system components.” Source: RevenueBase Database · checked Sep 20, 2026
13	Absolute Calibration	Strong evidence	Fareham, United KingdomHQ checked Sep 20, 2026	11-50	8 contacts →
	Strong evidence “Absolute Calibration is one of the UK's leading independent metrology companies offering you a complete solution for the calibration of your test and measurement instrumentation.” Source: RevenueBase Database · checked Sep 20, 2026
14	TMS Europe LTD	Indirect evidence	Hope Valley, United KingdomHQ checked Sep 20, 2026	11-50	7 contacts →
	Indirect evidence “TMS Europe Ltd has been established for over three decades providing Thermal Measurement Solutions to almost every type of industry.” Source: RevenueBase Database · checked Sep 20, 2026
15	Transmille LTD	Partial evidence	Staplehurst, United KingdomHQ checked Sep 20, 2026	11-50	7 contacts →
	Partial evidence “Transmille is a manufacturer of electrical calibration equipment and calibration software for calibration laboratories.” Source: RevenueBase Database · checked Sep 20, 2026
16	A T Instruments LTD	Indirect evidence	Lymington, United KingdomHQ checked Sep 20, 2026	11-50	7 contacts →
	Indirect evidence “A+T design and manufacture the best-engineered instrument systems for wind, speed, heading, position, depth and a wide range of other sensors such as load and pressure.” Source: RevenueBase Database · checked Sep 20, 2026
17	Seiche Group	Partial evidence	Holsworthy, United KingdomHQ checked Sep 20, 2026	51-200	6 contacts →
	Partial evidence “The Seiche Water Technology Group ("Seiche Group") provides monitoring and measurement solutions for the marine and utilities industries in the UK and across the world.” Source: RevenueBase Database · checked Sep 20, 2026
18	Accura Measurement LTD	Partial evidence	Aberdeen, United KingdomHQ checked Sep 20, 2026	11-50	6 contacts →
	Partial evidence “Accura Measurement specialise in the sales, service and rental of test equipment and process instrumentation used in metering, commissioning and maintenance throughout the Oil &…” Source: RevenueBase Database · checked Sep 20, 2026
19	Turbine Tools LTD	Strong evidence	Burgess Hill, United KingdomHQ checked Sep 20, 2026	1-10	6 contacts →
	Strong evidence “Turbine Tools Ltd specialises in the sales, servicing & calibration of major tooling brands throughout the aviation, marine and power generation industries” Source: RevenueBase Database · checked Sep 20, 2026
20	Scanjet PSM Marine	Strong evidence	West Sussex, United KingdomHQ checked Sep 20, 2026	501-1,000	5 contacts →
	Strong evidence “PSM Marine are specialists in control instrumentation and monitoring systems, providing measurement instrumentation, centralised and distributed display systems and application…” Source: RevenueBase Database · checked Sep 20, 2026
21	Thorcal	Partial evidence	Kingston Upon Hull, United KingdomHQ checked Sep 20, 2026	11-50	5 contacts →
	Partial evidence “Fast, Accredited Calibration.” Source: RevenueBase Database · checked Sep 20, 2026
22	Delta Calibration LTD	Partial evidence	Paisley, United KingdomHQ checked Sep 20, 2026	11-50	5 contacts →
	Partial evidence “At Delta Calibration Ltd, the bedrock of our operations is our unwavering commitment to delivering quality service.” Source: RevenueBase Database · checked Sep 20, 2026
23	Instruments To Industry LTD	Strong evidence	Oldham, United KingdomHQ checked Sep 20, 2026	11-50	5 contacts →
	Strong evidence “Instruments To Industry Ltd (ITIUK) is a UK market leader in the manufacture, supply, repair and calibration of a comprehensive range of pressure and temperature instrumentation.” Source: RevenueBase Database · checked Sep 20, 2026
24	Seacraft Marine LTD	Partial evidence	Poole, United KingdomHQ checked Sep 20, 2026	1-10	5 contacts →
	Partial evidence “Established in 2003 by Directors Mark Porter and Mark Spink, Seacraft Marine Ltd has grown to become a well regarded and highly reputable marine elctronics company based on the…” Source: RevenueBase Database · checked Sep 20, 2026
25	Haven Automation LTD	Indirect evidence	Swansea, United KingdomHQ checked Sep 20, 2026	1-10	4 contacts →
	Indirect evidence 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: marine instrumentation calibration services. 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 marine instrumentation calibration services.
Partial evidence: Its own public description names part of marine instrumentation calibration services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name marine instrumentation calibration services. 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 87 marine instrumentation calibration services based in the United Kingdom

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Marine instrumentation calibration services based in the United Kingdom at a glance

As of Sep 20, 2026

36.7%Verified-email coverage

6.3Average contacts per company

1-10Median size (employees)

3.4%Largest-city concentration · Lincoln

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

501-1,000

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 87 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 marine instrumentation calibration services, 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 “marine instrumentation calibration services”. 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 marine instrumentation calibration services), 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 marine instrumentation calibration services, 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, 202 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.

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 marine instrumentation calibration services, 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 marine instrumentation calibration services are there based in the United Kingdom?

RevenueBase identified 87 marine instrumentation calibration services 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?

Effectech, headquartered in Uttoxeter, tops this list with the largest team on record.

Which city has the most marine instrumentation calibration services?

Lincoln leads with 3 headquartered companies, followed by Southport (3) and Birmingham (2).

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 202 verified decision-maker contacts tracked across these 87 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.