Company lists · Data refreshed September 2026

Top 25 Industrial assembly contractors based in the United Kingdom

Name: Industrial assembly contractors 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 202 companies tracked

RevenueBase identified 202 industrial assembly contractors headquartered in the United Kingdom as of September 2026 and tracks 1,871 professional contacts across them, including 625 with verified work emails. London is the largest hub.

This list covers industrial assembly contractors 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

202Companies

1,871Contacts tracked

625Verified emails

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The 25 largest industrial assembly contractors based in the United Kingdom

Ranked by team size

Top 25 of 202 industrial assembly contractors 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 industrial assembly contractors: 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	MARCH	Indirect evidence	Multiple Locations Uk-wide, United KingdomHQ checked Sep 30, 2026	1,001-5,000	273 contacts →
	Indirect evidence “We are March.” Source: RevenueBase Database · checked Sep 30, 2026
2	ASL	Partial evidence	Bolton, United KingdomHQ checked Sep 30, 2026	51-200	126 contacts →
	Partial evidence “Assembly Solutions Ltd (for short, ASL) is a subcontract manufacturer of cable assemblies, wiring harnesses and control panels which supplies manufacturers including Ford, Siemens…” Source: RevenueBase Database · checked Sep 30, 2026
3	PCE Automation	Partial evidence	Beccles, United KingdomHQ checked Sep 30, 2026	201-500	105 contacts →
	Partial evidence “Formed in 1961, PCE Automation Ltd has established itself as an automation solutions provider for a wide range of product handling, assembling and testing systems with a worldwide…” Source: RevenueBase Database · checked Sep 30, 2026
4	Npsg Europe	Indirect evidence	London, United KingdomHQ checked Sep 30, 2026	51-200	68 contacts →
	Indirect evidence “We are a leading Global provider of Installation (M&E), Integration and Fit-out services, specialising in Automation, Robotics and MHE projects.” Source: RevenueBase Database · checked Sep 30, 2026
5	Clover Technical Services LTD	Indirect evidence	Birkenhead, United KingdomHQ checked Sep 30, 2026	51-200	52 contacts →
	Indirect evidence “Clover Technical Services is a privately owned company that has worked in the industry for over 25 years, and has a clear focus on offering its customers a fast and friendly…” Source: RevenueBase Database · checked Sep 30, 2026
6	Nitronica	Partial evidence	Ballynahinch, United KingdomHQ checked Sep 30, 2026	51-200	52 contacts →
	Partial evidence “Nitronica offer a comprehensive range of electrical and electronic assembly services from our sq.” Source: RevenueBase Database · checked Sep 30, 2026
7	NES	Partial evidence	Inverness, United KingdomHQ checked Sep 30, 2026	11-50	51 contacts →
	Partial evidence “NES is an Industrial and Commercial Electrical Engineering and Contracting business, based in the North and North East of Scotland.” Source: RevenueBase Database · checked Sep 30, 2026
8	Obconstruction	Strong evidence	Magherafelt, United KingdomHQ checked Sep 30, 2026	51-200	35 contacts →
	Strong evidence “OBConstruction are Building Contractors involved mainly in Industrial, Commercial and Agricultural sectors with two specialist divisions; Structural Steel fabrication and…” Source: RevenueBase Database · checked Sep 30, 2026
9	Directech QM Systems LTD	Partial evidence	Kidderminster, United KingdomHQ checked Sep 30, 2026	51-200	35 contacts →
	Partial evidence “Directech QM Systems is a turnkey provider of automation, testing, and manufacturing systems for all industries.” Source: RevenueBase Database · checked Sep 30, 2026
10	Mechatronic	Indirect evidence	Birmingham, United KingdomHQ checked Sep 30, 2026	51-200	29 contacts →
	Indirect evidence “Mechatronic is one of the UK’s leading providers of innovative automation solutions and system integration services.” Source: RevenueBase Database · checked Sep 30, 2026
11	ADI Automotive Services	Indirect evidence	Erdington, United KingdomHQ checked Sep 30, 2026	51-200	28 contacts →
	Indirect evidence “Specialists in delivering sophisticated mechanical and electrical installations to the Automotive industry covering various services.” Source: RevenueBase Database · checked Sep 30, 2026
12	John Heaney Electrical Limited	Partial evidence	Livingston, United KingdomHQ checked Sep 30, 2026	51-200	25 contacts →
	Partial evidence “John Heaney (Electrical) Limited (JHE Ltd) is an Electrical and Mechanical Company, specialising in all types of Industrial and Commercial Installations as well as Production Line…” Source: RevenueBase Database · checked Sep 30, 2026
13	J-Teq EMS Solutions LTD	Partial evidence	Livingston, United KingdomHQ checked Sep 30, 2026	11-50	24 contacts →
	Partial evidence “J-TEQ EMS Solutions Ltd based in Kirkton Campus Livingston EH54 7DQ are a contract manufacturer specialising in Electronic Assembly Our services include… Higher Level…” Source: RevenueBase Database · checked Sep 30, 2026
14	ALS Mechatronic	Indirect evidence	Cheltenham, United KingdomHQ checked Sep 30, 2026	11-50	23 contacts →
	Indirect evidence “ALS Mechatronic is trusted globally by start-ups through to multinational powerhouses - ranging from dairies to pharmaceutical companies to help improve their efficiency and…” Source: RevenueBase Database · checked Sep 30, 2026
15	Acres Engineering LTD	Partial evidence	Melbourne, United KingdomHQ checked Sep 30, 2026	11-50	23 contacts →
	Partial evidence “At Acres Engineering Ltd, we specialise in providing quality engineered custom products whilst designing for manufacture and assembly (DFMA).” Source: RevenueBase Database · checked Sep 30, 2026
16	CEL Group	Indirect evidence	Telford, United KingdomHQ checked Sep 30, 2026	51-200	21 contacts →
	Indirect evidence “Improve your pricing, improve your products and improve your performance with proven sub-contract manufacturing partners CEL Group.” Source: RevenueBase Database · checked Sep 30, 2026
17	VSM	Indirect evidence	Belfast, United KingdomHQ checked Sep 30, 2026	11-50	20 contacts →
	Indirect evidence “At VSM, our mission is to unlock optimum efficiency on your factory floor.” Source: RevenueBase Database · checked Sep 30, 2026
18	Engineering Systems & Projects LTD	Indirect evidence	Bury St Edmunds, United KingdomHQ checked Sep 30, 2026	11-50	18 contacts →
	Indirect evidence “Engineering Systems & Projects Ltd is an organisation specialising in the design, manufacture and installation of a wide range of manufacturing engineering systems.” Source: RevenueBase Database · checked Sep 30, 2026
19	Armstrong Nield	Indirect evidence	Wigan, United KingdomHQ checked Sep 30, 2026	51-200	15 contacts →
	Indirect evidence “Armstrong Nield supply both Mechanical & Electrical Installation Teams as well as offering Maintenance and Servicing Packages and Breakdown Cover We currently have engineers on…” Source: RevenueBase Database · checked Sep 30, 2026
20	Truck Loaders Limited	Indirect evidence	Alfreton, United KingdomHQ checked Sep 30, 2026	11-50	14 contacts →
	Indirect evidence “TRUCK LOADERS LIMITED is a mechanical engineering company which specialises in crane and truck body installations providing that one stop shop.” Source: RevenueBase Database · checked Sep 30, 2026
21	Laistung	Partial evidence	Preston, United KingdomHQ checked Sep 30, 2026	11-50	14 contacts →
	Partial evidence “Laistung is a pioneering system integrator and bespoke machine manufacturer specializing in industrial automation solutions.” Source: RevenueBase Database · checked Sep 30, 2026
22	Clearwater Electrical LTD	Indirect evidence	Portlethen, United KingdomHQ checked Sep 30, 2026	11-50	13 contacts →
	Indirect evidence “Clearwater Electrical Ltd is an Aberdeen-based company consisting of a team of Electrical Engineers with a wealth of experience in Electrical Contracting and Offshore Oil & Gas…” Source: RevenueBase Database · checked Sep 30, 2026
23	Mecsol	Indirect evidence	Bristol, United KingdomHQ checked Sep 30, 2026	11-50	12 contacts →
	Indirect evidence “Providing mechanical and electrical turnkey solutions in addition to project based delivery alongside industry partners.” Source: RevenueBase Database · checked Sep 30, 2026
24	RKB Electrical LTD	Partial evidence	Skipton, United KingdomHQ checked Sep 30, 2026	11-50	12 contacts →
	Partial evidence “We have extensive electrical experience in all fields, including industrial and commercial developments, offering a full design and installation service.” Source: RevenueBase Database · checked Sep 30, 2026
25	Senior Electrical & Security Systems LTD	Strong evidence	Bradford, United KingdomHQ checked Sep 30, 2026	11-50	10 contacts →
	Strong evidence “Industrial & Commercial Electrical Contractors.” 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: industrial assembly contractors. 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 industrial assembly contractors.
Partial evidence: Its own public description names part of industrial assembly contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name industrial assembly contractors. 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 202 industrial assembly contractors based in the United Kingdom

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Industrial assembly contractors based in the United Kingdom at a glance

As of Sep 30, 2026

33.4%Verified-email coverage

9.3Average contacts per company

1-10Median size (employees)

3.5%Largest-city concentration · London

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

105

11-50

51-200

201-500

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 202 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 industrial assembly contractors, 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 “industrial assembly contractors”. 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 industrial assembly contractors), 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 industrial assembly contractors, 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, 625 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 industrial assembly contractors, 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 industrial assembly contractors are there based in the United Kingdom?

RevenueBase identified 202 industrial assembly contractors 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?

MARCH, headquartered in Uk-Wide, tops this list with the largest team on record.

Which city has the most industrial assembly contractors?

London leads with 7 headquartered companies, followed by Sheffield (5) and Livingston (4).

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 625 verified decision-maker contacts tracked across these 202 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.