Company lists · Data refreshed November 2026

Top 20 Custom assembly services based in the United Kingdom

RevenueBase identified 60 company matches for custom assembly services associated with the United Kingdom as of November 2026 and tracks 483 professional contacts across them, including 147 with verified work emails. Birmingham is the largest hub.

This list covers company matches for custom assembly services 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 November 6, 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 Nov 6, 2026 How this list was built
60Companies
483Contacts tracked
147Verified emails
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The 20 largest custom assembly services based in the United Kingdom

Ranked by team size
Top 20 of 60 company matches for custom assembly services based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchPort Talbot, United KingdomHQ recorded Nov 6, 2026201-50048 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchWorthing, United KingdomHQ recorded Nov 6, 202651-20029 contacts →

Exact match

“FermionX Manufacturing is a complete product solution partner, dedicated to making better products.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchBlyth, United KingdomHQ recorded Nov 6, 2026201-50023 contacts →

Exact match

“Our services include Hand Assembly, Gift Packing, Sampling and Direct Mail, Blister Packs, Quality Rework, FSDU filling and Re-Packing.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchTelford, United KingdomHQ recorded Nov 6, 202651-20020 contacts →

Exact match

“Improve your pricing, improve your products and improve your performance with proven sub-contract manufacturing partners CEL Group.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchWorthing, United KingdomHQ recorded Nov 6, 202611-5018 contacts →

Exact match

“Manufacturing companies in high-precision sectors face mounting pressures: hundreds of small suppliers, rising internal costs, slow procurement cycles, tied-up capital, and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchStevenage, United KingdomHQ recorded Nov 6, 202611-5017 contacts →

Exact match

“Arkle Electronic Systems provides full turn-key product assembly solutions for those looking for a managed manufacturing cycle from initial product integration through to…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchSwindon, United KingdomHQ recorded Nov 6, 202651-20014 contacts →

Exact match

“IEW Ltd has been providing sub contract electronic manufacturing services for over 40 years serving a wide range of clients including some of industry’s leading Blue Chip…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchMaldon, United KingdomHQ recorded Nov 6, 202611-5013 contacts →

Exact match

“Brynleigh Technology Limited is an independent contract electronics manufacturer specializing in circuit board assembly, prototyping and test.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchEarith, United KingdomHQ recorded Nov 6, 202651-20013 contacts →

Exact match

“Founded in 1977 KLM Engineering Ltd provides a complete, flexible and highly competitive out sourced Engineering and Fabrication capability.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchWick, United KingdomHQ recorded Nov 6, 202611-509 contacts →

Exact match

“Resurgem Co.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchKearsley, United KingdomHQ recorded Nov 6, 202611-509 contacts →

Exact match

“PRSS Solutions (UK) Ltd can gather, assemble and arrange any of a number of different project concepts.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchStratford-upon-avon, United KingdomHQ recorded Nov 6, 202611-508 contacts →

Exact match

“Based in the UK 's central location of Stratford Upon Avon, here at Savcon we have got the combined experience of over 300 years in the industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchBurgess Hill, United KingdomHQ recorded Nov 6, 202611-508 contacts →

Exact match

“Willow Electronics – high quality subcontract assembly services to OEM and EMS tiers.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchWareham, United KingdomHQ recorded Nov 6, 202611-505 contacts →

Exact match

“At Purbeck Electronics LTD, we specialise in providing flexible, reliable, and cost-effective PCB assembly services for customers across a wide range of industries.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchMacclesfield, United KingdomHQ recorded Nov 6, 202611-505 contacts →

Exact match

“We’re a UK-based contract manufacturer providing electronic and electrical assembly services to industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchIpswich, United KingdomHQ recorded Nov 6, 202611-505 contacts →

Exact match

“Wardley Electronics is an established and successful sub-contract manufacturer.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchBishops Stortford, United KingdomHQ recorded Nov 6, 202611-503 contacts →

Exact match

“Nitronics was founded in 1985 as an independent supplier to the Electronics Industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchDudley Port, United KingdomHQ recorded Nov 6, 20261-103 contacts →

Exact match

“Is a well-qualified and highly experienced midsized fabrication workshop.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchDevizes, United KingdomHQ recorded Nov 6, 20261-102 contacts →

Exact match

“Our aim is simple: To provide our valued customers with quality made components to their specification.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchLurgan, United KingdomHQ recorded Nov 6, 202611-501 contacts →

Exact match

“Low volume complex manufacturing and assembly through design…” In close collaborative partnership with established companies and new start-ups, Torc provides a total outsourced…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 20 of 60 custom assembly services based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 147 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Custom assembly services based in the United Kingdom at a glance

As of Nov 6, 2026
30.4%Verified-email coverage
8.1Average contacts per company
11-50Median size (employees)
3.3%Largest-city concentration · Birmingham
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
18
11-50
26
51-200
9
201-500
4

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 60 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 “custom assembly services” 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 147 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 November 6, 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 “custom assembly services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many custom assembly services are there based in the United Kingdom?

RevenueBase identified 60 company matches for custom assembly services associated with the United Kingdom as of November 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?

Cornelius Electronics LTD tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most custom assembly services?

Birmingham leads with 2 company records, followed by Burgess Hill (2) and Exeter (2).

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 147 professional contacts with verified work emails tracked across these 60 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 November 6, 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.