Company lists · Data refreshed September 2026

Top 25 Automotive wire harness suppliers based in the United Kingdom

Name: Automotive wire harness suppliers 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 82 companies tracked

RevenueBase identified 82 company matches for automotive wire harness suppliers associated with the United Kingdom as of September 2026 and tracks 2,412 professional contacts across them, including 843 with verified work emails. Swindon is the largest hub.

This list covers company matches for automotive wire harness suppliers associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 30, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 30, 2026 How this list was built

82Companies

2,412Contacts tracked

843Verified emails

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The 25 largest automotive wire harness suppliers based in the United Kingdom

Ranked by team size

Top 25 of 82 company matches for automotive wire harness suppliers based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 30, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Sews-E	Exact match	Newcastle-under-lyme, United KingdomHQ recorded Sep 30, 2026	10001+	1,739 contacts →
	Exact match “SEWS-E, Sumitomo Electric Wiring Systems (Europe) manufactures and processes wiring harnesses and related parts in countries such as Hungary, Romania, Morocco and Egypt.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
2	ASL	Exact match	Bolton, United KingdomHQ recorded Sep 30, 2026	51-200	126 contacts →
	Exact match “Assembly Solutions Ltd (for short, ASL) is a subcontract manufacturer of cable assemblies, wiring harnesses and control panels which supplies manufacturers including Ford, Siemens…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
3	Ionix Systems	Exact match	Risley, United KingdomHQ recorded Sep 30, 2026	501-1,000	35 contacts →
	Exact match “Ionix Systems is a specialist designer and manufacturer of wiring harness and woven systems, providing interconnection solutions for aerospace, defence, power generation and other…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
4	Q5d	Exact match	Portishead, United KingdomHQ recorded Sep 30, 2026	11-50	33 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
5	Excel Assemblies LTD	Exact match	Fife, United KingdomHQ recorded Sep 30, 2026	501-1,000	32 contacts →
	Exact match “Excel Assemblies is a supplier of Cable Harnesses, Sub Assemblies and Technical Services to the Agricultural, Automotive, Construction, Mass Transit and Material Handling market…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
6	Contour Electronics LTD	Exact match	Hook, United KingdomHQ recorded Sep 30, 2026	11-50	29 contacts →
	Exact match “Bespoke Interconnect & Value Added Integration Solutions Contour Electronics specialises in designing and manufacturing custom cable assemblies, wiring looms and integrated…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
7	Parkinson Harness Technology LTD	Exact match	Boston, United KingdomHQ recorded Sep 30, 2026	51-200	26 contacts →
	Exact match “Parkinson Harness Technology manufacture bespoke electrical solutions including wiring harnesses, control panels, battery/power leads, PCB’s, and control systems.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
8	Amphenol Trackwise Designs LTD	Exact match	Stonehouse, United KingdomHQ recorded Sep 30, 2026	51-200	22 contacts →
	Exact match “Manufacturing the new generation of interconnect for customers around the world.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
9	Horizon Wiring LTD	Exact match	Suffolk, United KingdomHQ recorded Sep 30, 2026	11-50	21 contacts →
	Exact match “Specialist Wiring Harness Manufacturers” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
10	Kaliber LTD	Exact match	Swindon, United KingdomHQ recorded Sep 30, 2026	51-200	21 contacts →
	Exact match “Kaliber Ltd design, manufacture and supply high integrity, customised cable harnesses and electro-mechanical assemblies to customers in the Aerospace, Motorsport, Marine, Mass…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
11	HCI Systems Limited	Exact match	Newport, United KingdomHQ recorded Sep 30, 2026	11-50	21 contacts →
	Exact match “HCI Systems Limited specialises in Designing and Manufacturing bespoke Electrical Systems for the Automotive, Autosport, Marine and Commercial market sectors.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
12	Westwire Harnessing LTD	Exact match	Swindon, United KingdomHQ recorded Sep 30, 2026	11-50	20 contacts →
	Exact match “Westwire Harnessing are specialists in design, development and manufacturing of wire harnessing for transport, aerospace and military.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
13	Brucom Distribution LTD	Exact match	Stafford, United KingdomHQ recorded Sep 30, 2026	51-200	18 contacts →
	Exact match “We are a UK-based electrical and mechanical manufacturer, combining innovation and sustainability to craft high-quality components and assemblies.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
14	Link Cable Assemblies LTD	Exact match	Bellshill, United KingdomHQ recorded Sep 30, 2026	51-200	18 contacts →
	Exact match “Since 2002 Link Cable Assemblies have been supplying our clients with wire harnesses, looms, control panels, electrical components and cable assemblies from our manufacturing head…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
15	SIC LTD	Exact match	Swansea, United KingdomHQ recorded Sep 30, 2026	51-200	17 contacts →
	Exact match “SIC (Swansea Industrial Components) has been making wiring harnesses and cable assemblies for over 50 years since it was founded in 1964.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
16	Auto Electrical Supplies LTD	Exact match	Wakefield, United KingdomHQ recorded Sep 30, 2026	11-50	10 contacts →
	Exact match “Founded in 1992, we specialise in the supply of Electrical Automotive Conduit, Hinged / Sealed Fittings and Automotive Electrical Connectors / Interfaces that protect critical…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
17	Pinnacle Harnesses	Exact match	136 Rhosnesni Lane, United KingdomHQ recorded Sep 30, 2026	11-50	10 contacts →
	Exact match “Pinnacle Harnesses are a leading Wire Harnesses manufacturer that deliver bespoke and exact solutions to our valued customers.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
18	Autosparks LTD	Exact match	Nottingham, United KingdomHQ recorded Sep 30, 2026	51-200	7 contacts →
	Exact match “World leading manufacturer & supplier of classic car wiring harnesses and an experienced original equipment manufacturer (OEM).” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
19	HTK Europe LTD	Exact match	Swindon, United KingdomHQ recorded Sep 30, 2026	11-50	7 contacts →
	Exact match “HTK Europe” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
20	TFC Cable Assemblies	Exact match	Canyon Road, United KingdomHQ recorded Sep 30, 2026	51-200	6 contacts →
	Exact match “TFC is widely regarded as a premier contract electronics manufacturer.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
21	Hayakawa International UK LTD	Exact match	Wrexham, United KingdomHQ recorded Sep 30, 2026	11-50	6 contacts →
	Exact match “Hayakawa specialises in the bespoke design and manufacture of wiring, cable assemblies and lighting cables.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
22	ST Cross Electronics LTD	Exact match	Southampton, United KingdomHQ recorded Sep 30, 2026	11-50	6 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
23	Solutions ARE Looming	Exact match	Hull, United KingdomHQ recorded Sep 30, 2026	1-10	6 contacts →
	Exact match “At Solutions Are Looming Ltd, we use state-of-the-art machinery to manufacture a wide range of wiring solutions for bespoke requirements, including cable looms and cable harnesses.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
24	Raffenday LTD	Exact match	Wellingborough, United KingdomHQ recorded Sep 30, 2026	11-50	5 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
25	Wireco Limited	Exact match	Congleton, United KingdomHQ recorded Sep 30, 2026	11-50	5 contacts →
	Exact match “Wireco have built an impeccable reputation as cable harness assembly specialists who design and manufacture wire harnesses and wiring looms as well as offering a flexible…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “automotive wire harness suppliers”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 82 automotive wire harness suppliers based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 843 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Automotive wire harness suppliers based in the United Kingdom at a glance

As of Sep 30, 2026

35.0%Verified-email coverage

29.4Average contacts per company

11-50Median size (employees)

4.9%Largest-city concentration · Swindon

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

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 82 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with the United Kingdom whose business descriptions match “automotive wire harness suppliers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 843 professional contacts with verified work emails across the full matched dataset. 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.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “automotive wire harness suppliers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many automotive wire harness suppliers are there based in the United Kingdom?

RevenueBase identified 82 company matches for automotive wire harness suppliers associated with the United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Sews-E tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most automotive wire harness suppliers?

Swindon leads with 4 company records, followed by Boston (3) and London (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 843 professional contacts with verified work emails tracked across these 82 companies; direct dials are available where recorded.

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 SmartSearch, 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.