Company lists · Data refreshed September 2026
Top 25 Harness wire manufacturers based in the United Kingdom
RevenueBase identified 86 harness wire manufacturers headquartered in the United Kingdom as of September 2026 and tracks 2,565 professional contacts across them, including 923 with verified work emails. Swindon is the largest hub.
This list covers harness wire 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.
The 25 largest harness wire manufacturers based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,739 contacts → | ||||
Strong evidence “SEWS-E, Sumitomo Electric Wiring Systems (Europe) manufactures and processes wiring harnesses and related parts in countries such as Hungary, Romania, Morocco and Egypt.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 2 | 126 contacts → | ||||
Strong 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, 2026Thanks. The Data Team will review it. | |||||
| 3 | 74 contacts → | ||||
Indirect evidence “Rayfast provides specialised technical products and solutions to the global Defence, Civil Aviation, Medical, Motorsport, Rail and Industrial markets.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 4 | 35 contacts → | ||||
Strong evidence “Ionix Systems is a specialist designer and manufacturer of wiring harness and woven systems, providing interconnection solutions for aerospace, defence, power generation and other…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 5 | 33 contacts → | ||||
Partial evidence “Q5D is an innovative technology company developing tools to automate the production of wiring harnesses for the consumer white goods and electronics, through to the automotive and…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 6 | 32 contacts → | ||||
Partial evidence “Excel Assemblies is a supplier of Cable Harnesses, Sub Assemblies and Technical Services to the Agricultural, Automotive, Construction, Mass Transit and Material Handling market…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 7 | 29 contacts → | ||||
Strong evidence “Tekdata Interconnections designs and manufactures complex and bespoke wiring harnesses for advanced or unique systems using exclusively developed technologies.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 8 | 22 contacts → | ||||
Indirect evidence “Manufacturing the new generation of interconnect for customers around the world.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 9 | 21 contacts → | ||||
Strong evidence “Specialist Wiring Harness Manufacturers” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 10 | 21 contacts → | ||||
Strong evidence “Kaliber Ltd design, manufacture and supply high integrity, customised cable harnesses and electro-mechanical assemblies to customers in the Aerospace, Motorsport, Marine, Mass…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 11 | 20 contacts → | ||||
Strong evidence “Westwire Harnessing are specialists in design, development and manufacturing of wire harnessing for transport, aerospace and military.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 12 | 20 contacts → | ||||
Indirect 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 30, 2026Thanks. The Data Team will review it. | |||||
| 13 | 19 contacts → | ||||
Partial evidence “Established in 1991, Itel Electronics have 30 years experience manufacturing and designing high performance cable harness systems and electrical boxes for aerospace, space…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 14 | 18 contacts → | ||||
Indirect evidence “Cabletec are part of the Interconnect Solutions Group, the global supplier with the personal touch.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 15 | 17 contacts → | ||||
Partial evidence “SIC (Swansea Industrial Components) has been making wiring harnesses and cable assemblies for over 50 years since it was founded in 1964.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 16 | 14 contacts → | ||||
Partial evidence “For over 50 years, K Lacey Ltd has provided the UK and global markets with the highest quality, top-end cables and wires, offering stock held product and custom designed cables.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 17 | 12 contacts → | ||||
Partial evidence “We are a privately-owned UK company, with many years of experience providing the design and manufacture of electrical and RF cable assemblies, and the distribution of their…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 18 | 12 contacts → | ||||
Strong evidence “Concept Cables Limited is an independent insulated wire and cable manufacturer based in Blandford Forum, Dorset, UK.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 19 | 11 contacts → | ||||
Partial evidence “Bruntons Aero Products is a specialist manufacturer of aerospace component parts, based in the UK.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 20 | 11 contacts → | ||||
Indirect evidence “We're celebrating our 100 year anniversary!” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 21 | 10 contacts → | ||||
Partial evidence “As the largest independent British wire production company, Barnfather Wire, is proud to uphold the values that set it apart from the competition.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 22 | 10 contacts → | ||||
Strong evidence “Pinnacle Harnesses are a leading Wire Harnesses manufacturer that deliver bespoke and exact solutions to our valued customers.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 23 | 7 contacts → | ||||
Strong evidence “World leading manufacturer & supplier of classic car wiring harnesses and an experienced original equipment manufacturer (OEM).” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 24 | 6 contacts → | ||||
Partial evidence “Hayakawa specialises in the bespoke design and manufacture of wiring, cable assemblies and lighting cables.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 25 | 6 contacts → | ||||
Indirect evidence “St Cross Electronics has been manufacturing very high-quality bespoke cable assemblies of all complexities at our fully ISO and also UL approved facility in Southampton for over…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
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: harness wire 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 harness wire manufacturers.
- Partial evidence
- Its own public description names part of harness wire manufacturers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name harness wire 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 86 harness wire manufacturers based in the United Kingdom
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Harness wire manufacturers based in the United Kingdom at a glance
As of Sep 30, 2026Companies by employee count
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 86 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 harness wire 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 “harness wire 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 harness wire 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 harness wire 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, 923 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 harness wire 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 harness wire manufacturers are there based in the United Kingdom?
RevenueBase identified 86 harness wire 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?
Sews-E, headquartered in Newcastle-Under-Lyme, tops this list with the largest team on record.
Which city has the most harness wire manufacturers?
Swindon leads with 5 headquartered companies, followed by London (3) and Newcastle-Under-Lyme (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 923 verified decision-maker contacts tracked across these 86 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.
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