Company lists · Data refreshed September 2026

Top 25 Mechanical assembly companies based in the United Kingdom

Name: Mechanical assembly companies 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 230 companies tracked

RevenueBase identified 230 mechanical assembly companies headquartered in the United Kingdom as of September 2026 and tracks 2,333 professional contacts across them, including 741 with verified work emails. London is the largest hub.

This list covers mechanical assembly companies 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

230Companies

2,333Contacts tracked

741Verified emails

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The 25 largest mechanical assembly companies based in the United Kingdom

Ranked by team size

Top 25 of 230 mechanical assembly companies 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 mechanical assembly companies: 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	WHS Plastics LTD	Indirect evidence	Minworth, United KingdomHQ checked Sep 20, 2026	501-1,000	394 contacts →
	Indirect evidence “WHS Plastics successfully operates in a highly competitive global marketplace, partnering with major international companies in a variety of market segments including automotive…” Source: RevenueBase Database · checked Sep 20, 2026
2	Nasmyth	Indirect evidence	Exhall, United KingdomHQ checked Sep 20, 2026	501-1,000	150 contacts →
	Indirect evidence “Nasmyth is a cohesive group of engineering businesses that consistently provides high quality services and products.” Source: RevenueBase Database · checked Sep 20, 2026
3	Walker Group	Indirect evidence	Glasgow, United KingdomHQ checked Sep 20, 2026	201-500	79 contacts →
	Indirect evidence “Walker Group is a forward-thinking, technology-led contract manufacturing company serving global markets.” Source: RevenueBase Database · checked Sep 20, 2026
4	Alpha Manufacturing	Indirect evidence	Stafford, United KingdomHQ checked Sep 20, 2026	51-200	62 contacts →
	Indirect evidence “Alpha Manufacturing Hixon Ltd is a precision sub contract sheet metal fabricators based in Hixon, Staffordshire.” Source: RevenueBase Database · checked Sep 20, 2026
5	Nitronica	Partial evidence	Ballynahinch, United KingdomHQ checked Sep 20, 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 20, 2026
6	Cornelius Electronics LTD	Indirect evidence	Port Talbot, United KingdomHQ checked Sep 20, 2026	201-500	44 contacts →
	Indirect evidence “Cornelius Electronics is an AS9100 sub-contract manufacturer supporting OEMs, machine builders and business owners worldwide who have a demand for a reliable, long term…” Source: RevenueBase Database · checked Sep 20, 2026
7	Warren	Indirect evidence	Thetford Norfolk, United KingdomHQ checked Sep 20, 2026	51-200	39 contacts →
	Indirect evidence “Warren is a full-service manufacturing partner with a focus on engineered innovation.” Source: RevenueBase Database · checked Sep 20, 2026
8	Kiyokuni Europe Limited	Partial evidence	Telford, United KingdomHQ checked Sep 20, 2026	51-200	38 contacts →
	Partial evidence “METAL PRESSINGS, FABRICATION & ASSEMBLIES Kiyokuni Europe Limited was established in 1987 as part of the Japanese owned, Kiyokuni Group.” Source: RevenueBase Database · checked Sep 20, 2026
9	Geometric Manufacturing LTD	Indirect evidence	Tewkesbury, United KingdomHQ checked Sep 20, 2026	51-200	34 contacts →
	Indirect evidence “Geometric Manufacturing provides a flexible solution to your production requirements.” Source: RevenueBase Database · checked Sep 20, 2026
10	Tenon Engineering	Indirect evidence	Dorking, United KingdomHQ checked Sep 20, 2026	11-50	34 contacts →
	Indirect evidence “Tenon Engineering is a leading end-to-end precision manufacturing company providing complex, high spec products for demanding industries.” Source: RevenueBase Database · checked Sep 20, 2026
11	Fermionx Manufacturing	Indirect evidence	Worthing, United KingdomHQ checked Sep 20, 2026	51-200	30 contacts →
	Indirect evidence “FermionX Manufacturing is a complete product solution partner, dedicated to making better products.” Source: RevenueBase Database · checked Sep 20, 2026
12	Almond Engineering Limited	Indirect evidence	Livingston, United KingdomHQ checked Sep 20, 2026	11-50	25 contacts →
	Indirect evidence “Here at Almond we believe that the key to long-term success lies in customer service.” Source: RevenueBase Database · checked Sep 20, 2026
13	J-Teq EMS Solutions LTD	Partial evidence	Livingston, United KingdomHQ checked Sep 20, 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 20, 2026
14	CEL Group	Indirect evidence	Telford, United KingdomHQ checked Sep 20, 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 20, 2026
15	Huber Suhner Phoenix Dynamics	Partial evidence	Newcastle-under-lyme, United KingdomHQ checked Sep 20, 2026	11-50	20 contacts →
	Partial evidence “With over 30 years’ experience, HUBER+SUHNER Phoenix Dynamics is a leader in delivering world class electrical cable assemblies into some of the most challenging environments.” Source: RevenueBase Database · checked Sep 20, 2026
16	VSM	Indirect evidence	Belfast, United KingdomHQ checked Sep 20, 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 20, 2026
17	Mowden Controls Limited	Indirect evidence	Northallerton, United KingdomHQ checked Sep 20, 2026	11-50	19 contacts →
	Indirect evidence “ESTABLISHED IN 1965, Mowden is one of the leading electronics manufacturing specialists in the North of England.” Source: RevenueBase Database · checked Sep 20, 2026
18	Tadley Engineering LTD	Partial evidence	Tadley, United KingdomHQ checked Sep 20, 2026	11-50	18 contacts →
	Partial evidence “Tadley Engineering is an AS9100 certified company specialising in mechanical engineering design, high precision machining, sheet metal fabrication, coded welding, powder coating…” Source: RevenueBase Database · checked Sep 20, 2026
19	Grenville Engineering Stoke-On-Trent LTD	Indirect evidence	Stoke-on-trent, United KingdomHQ checked Sep 20, 2026	51-200	17 contacts →
	Indirect evidence “Established over 40 years ago, Grenville Engineering (Stoke-on-Trent) Ltd offers a one stop shop for sheet metal fabrication requirements.” Source: RevenueBase Database · checked Sep 20, 2026
20	RHH Franks	Indirect evidence	New Milton, United KingdomHQ checked Sep 20, 2026	11-50	17 contacts →
	Indirect evidence “RHH Franks are accredited specialists in the complete manufacture of components for aerospace and allied industries.” Source: RevenueBase Database · checked Sep 20, 2026
21	Smart Manufacturing LTD	Indirect evidence	Bideford, United KingdomHQ checked Sep 20, 2026	11-50	17 contacts →
	Indirect evidence “Smart Manufacturing operates with the latest automated Sheetmetal equipment to provide unparalleled turnaround and quality sheet metal parts while maintaining competitive costs.” Source: RevenueBase Database · checked Sep 20, 2026
22	Aldermans	Indirect evidence	Plymouth, United KingdomHQ checked Sep 20, 2026	11-50	17 contacts →
	Indirect evidence “We’re one of the South West’s leading quality metalwork manufacturers.” Source: RevenueBase Database · checked Sep 20, 2026
23	PSC Global	Indirect evidence	Worthing, United KingdomHQ checked Sep 20, 2026	11-50	17 contacts →
	Indirect evidence “Manufacturing companies in high-precision sectors face mounting pressures: hundreds of small suppliers, rising internal costs, slow procurement cycles, tied-up capital, and…” Source: RevenueBase Database · checked Sep 20, 2026
24	Arkle Electronic Systems Limited	Partial evidence	Stevenage, United KingdomHQ checked Sep 20, 2026	11-50	16 contacts →
	Partial evidence “Arkle Electronic Systems provides full turn-key product assembly solutions for those looking for a managed manufacturing cycle from initial product integration through to…” Source: RevenueBase Database · checked Sep 20, 2026
25	Incotech LTD	Partial evidence	Aldridge, United KingdomHQ checked Sep 20, 2026	11-50	16 contacts →
	Partial evidence “At Incotech, we specialise in creating bespoke automation, assembly, testing, and special purpose machinery tailored to meet the precise needs of our clients.” 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: mechanical assembly companies. 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 mechanical assembly companies.
Partial evidence: Its own public description names part of mechanical assembly companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name mechanical assembly companies. 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 230 mechanical assembly companies based in the United Kingdom

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Mechanical assembly companies based in the United Kingdom at a glance

As of Sep 20, 2026

31.8%Verified-email coverage

10.1Average contacts per company

11-50Median size (employees)

2.6%Largest-city concentration · London

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

111

51-200

201-500

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 230 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 mechanical assembly companies, 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 “mechanical assembly companies”. 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 mechanical assembly companies), 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 mechanical assembly companies, 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, 741 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 mechanical assembly companies, 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 mechanical assembly companies are there based in the United Kingdom?

RevenueBase identified 230 mechanical assembly companies 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?

WHS Plastics LTD, headquartered in Birmingham, tops this list with the largest team on record.

Which city has the most mechanical assembly companies?

London leads with 6 headquartered companies, followed by Poole (5) and Birmingham (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 741 verified decision-maker contacts tracked across these 230 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.