Company lists · Data refreshed September 2026

Top 25 Automotive wiring suppliers based in the United Kingdom

Name: Automotive wiring 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 89 companies tracked

RevenueBase identified 89 automotive wiring suppliers headquartered in the United Kingdom as of September 2026 and tracks 2,315 professional contacts across them, including 799 with verified work emails. Nottingham is the largest hub.

This list covers automotive wiring suppliers 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

89Companies

2,315Contacts tracked

799Verified emails

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The 25 largest automotive wiring suppliers based in the United Kingdom

Ranked by team size

Top 25 of 89 automotive wiring suppliers 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 automotive wiring suppliers: 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	Sews-E	Partial evidence	Newcastle-under-lyme, United KingdomHQ checked Sep 30, 2026	10001+	1,739 contacts →
	Partial 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, 2026
2	Ring Automotive LTD	Indirect evidence	Leeds, United KingdomHQ checked Sep 30, 2026	51-200	77 contacts →
	Indirect evidence “Ring is a leading European brand in vehicle lighting, auto electrics, workshop tools and auto accessories.” Source: RevenueBase Database · checked Sep 30, 2026
3	CAR Spares Distribution Limited	Indirect evidence	Birmingham, United KingdomHQ checked Sep 30, 2026	201-500	40 contacts →
	Indirect evidence “CAR SPARES (DISTRIBUTION) LIMITED is a wholesale company based out of 90 Summer Lane, Newtown, Birmingham B19 3ND” Source: RevenueBase Database · checked Sep 30, 2026
4	Auto Electrical Services LTD	Partial evidence	Leighton Buzzard, United KingdomHQ checked Sep 30, 2026	11-50	36 contacts →
	Partial evidence “Established in the 1950s, Auto Electrical Services have conquered the automotive electrical sector and to this day remain a trusted contact amongst fleet managers up and down the…” Source: RevenueBase Database · checked Sep 30, 2026
5	Q5d	Strong evidence	Portishead, United KingdomHQ checked Sep 30, 2026	11-50	33 contacts →
	Strong 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, 2026
6	Durite Limited	Indirect evidence	Dovercourt, United KingdomHQ checked Sep 30, 2026	51-200	25 contacts →
	Indirect evidence “Durite are the leaders in Vehicle Safety and Auto Electrical Parts with over products available.” Source: RevenueBase Database · checked Sep 30, 2026
7	Amphenol Trackwise Designs LTD	Indirect evidence	Stonehouse, United KingdomHQ checked Sep 30, 2026	51-200	22 contacts →
	Indirect evidence “Manufacturing the new generation of interconnect for customers around the world.” Source: RevenueBase Database · checked Sep 30, 2026
8	Horizon Wiring LTD	Partial evidence	Suffolk, United KingdomHQ checked Sep 30, 2026	11-50	21 contacts →
	Partial evidence “Specialist Wiring Harness Manufacturers” Source: RevenueBase Database · checked Sep 30, 2026
9	HCI Systems Limited	Partial evidence	Newport, United KingdomHQ checked Sep 30, 2026	11-50	21 contacts →
	Partial evidence “HCI Systems Limited specialises in Designing and Manufacturing bespoke Electrical Systems for the Automotive, Autosport, Marine and Commercial market sectors.” Source: RevenueBase Database · checked Sep 30, 2026
10	Westwire Harnessing LTD	Indirect evidence	Swindon, United KingdomHQ checked Sep 30, 2026	11-50	20 contacts →
	Indirect evidence “Westwire Harnessing are specialists in design, development and manufacturing of wire harnessing for transport, aerospace and military.” Source: RevenueBase Database · checked Sep 30, 2026
11	Millfield Autoparts Limited	Partial evidence	Peterborough, United KingdomHQ checked Sep 30, 2026	51-200	18 contacts →
	Partial evidence “MILLFIELD AUTOPARTS LIMITED is an automotive company based out of Unit 5 Bourges View Park Maskew Avenue Peterborough, United Kingdom.” Source: RevenueBase Database · checked Sep 30, 2026
12	SIC LTD	Partial evidence	Swansea, United KingdomHQ checked Sep 30, 2026	51-200	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, 2026
13	Auto Electrical Supplies LTD	Partial evidence	Wakefield, United KingdomHQ checked Sep 30, 2026	11-50	10 contacts →
	Partial evidence “Founded in 1992, we specialise in the supply of Electrical Automotive Conduit, Hinged / Sealed Fittings and Automotive Electrical Connectors / Interfaces that protect critical…” Source: RevenueBase Database · checked Sep 30, 2026
14	Pinnacle Harnesses	Indirect evidence	136 Rhosnesni Lane, United KingdomHQ checked Sep 30, 2026	11-50	10 contacts →
	Indirect 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, 2026
15	LA Distribution NI LTD	Strong evidence	Belfast, United KingdomHQ checked Sep 30, 2026	1-10	7 contacts →
	Strong evidence “LA Distribution have been major suppliers to the automotive & transport sector in Northern Ireland for the past 25 years, specialising in supplying auto electrical components &…” Source: RevenueBase Database · checked Sep 30, 2026
16	Autosparks LTD	Strong evidence	Nottingham, United KingdomHQ checked Sep 30, 2026	51-200	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, 2026
17	HTK Europe LTD	Indirect evidence	Swindon, United KingdomHQ checked Sep 30, 2026	11-50	7 contacts →
	Indirect evidence “HTK Europe” Source: RevenueBase Database · checked Sep 30, 2026
18	Mobile Centre Limited	Partial evidence	Evesham, United KingdomHQ checked Sep 30, 2026	11-50	7 contacts →
	Partial evidence “Mobile Centre’s primary role is as a distributor of premium automotive based electronics and quality auto electrical products with particular interest in high end automotive…” Source: RevenueBase Database · checked Sep 30, 2026
19	Hayakawa International UK LTD	Partial evidence	Wrexham, United KingdomHQ checked Sep 30, 2026	11-50	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, 2026
20	Nortek Electronic Circuits LTD	Indirect evidence	Congleton, United KingdomHQ checked Sep 30, 2026	11-50	6 contacts →
	Indirect evidence “Nortek Electronics, based in Congleton, UK, is a stalwart in the field of electrical and electronic manufacturing.” Source: RevenueBase Database · checked Sep 30, 2026
21	Solutions ARE Looming	Partial evidence	Hull, United KingdomHQ checked Sep 30, 2026	1-10	6 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 30, 2026
22	Raffenday LTD	Indirect evidence	Wellingborough, United KingdomHQ checked Sep 30, 2026	11-50	5 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026
23	Cablepoint LTD	Partial evidence	Hull, United KingdomHQ checked Sep 30, 2026	11-50	5 contacts →
	Partial evidence “Cablepoint UK delivers precision-engineered cable assemblies, wiring looms, harnesses and discreet wires - plus full-service box-builds, control panel wiring and over-moulding.” Source: RevenueBase Database · checked Sep 30, 2026
24	Convert Limited	Indirect evidence	Edenbridge, United KingdomHQ checked Sep 30, 2026	11-50	5 contacts →
	Indirect evidence “Convert Ltd is a UK based manufacturer of complex cable harnesses, cable assemblies, cable looms, interconnect harnesses & process cable sets.” Source: RevenueBase Database · checked Sep 30, 2026
25	Project DC	Partial evidence	Kineton, United KingdomHQ checked Sep 30, 2026	1-10	5 contacts →
	Partial evidence “Project DC was founded to provide superior performance wiring solutions in an industry with limited high quality harness designers and manufacturers.” 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: automotive wiring suppliers. 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 automotive wiring suppliers.
Partial evidence: Its own public description names part of automotive wiring suppliers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name automotive wiring suppliers. 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 89 automotive wiring suppliers based in the United Kingdom

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Automotive wiring suppliers based in the United Kingdom at a glance

As of Sep 30, 2026

34.5%Verified-email coverage

26.0Average contacts per company

1-10Median size (employees)

3.4%Largest-city concentration · Nottingham

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 89 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 automotive wiring suppliers, 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 “automotive wiring suppliers”. 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 automotive wiring suppliers), 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 automotive wiring suppliers, 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, 799 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 automotive wiring suppliers, 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 automotive wiring suppliers are there based in the United Kingdom?

RevenueBase identified 89 automotive wiring suppliers 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 automotive wiring suppliers?

Nottingham leads with 3 headquartered companies, followed by Belfast (2) and Boston (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 799 verified decision-maker contacts tracked across these 89 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.