Company lists · Data refreshed September 2026

Top 25 Engineering outsourcing companies based in the United Kingdom

RevenueBase identified 2,208 engineering outsourcing companies headquartered in the United Kingdom as of September 2026 and tracks 37,181 professional contacts across them, including 14,889 with verified work emails and 1,558 with mobile numbers. London is the largest hub.

This list covers engineering outsourcing 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 24, 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 24, 2026 86% judged on-target in blind review
2,208Companies
37,181Contacts tracked
14,889Verified emails
1,558Mobile numbers
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The 25 largest engineering outsourcing companies based in the United Kingdom

Ranked by team size
Top 25 of 2,208 engineering outsourcing companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 24, 2026. RevenueBase Smart Search rates how each company's information relates to engineering outsourcing 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceWoking, United KingdomHQ checked Sep 24, 2026201-500286 contacts →

Partial evidence

“2H Offshore delivers leading-edge advanced systems engineering for all types of offshore structures in the oil and gas and renewable energy sectors.”

Source: RevenueBase Database · checked Sep 24, 2026
2Partial evidenceKenilworth, United KingdomHQ checked Sep 24, 2026201-500252 contacts →

Partial evidence

“Solid Solutions helps design and engineering teams work with confidence.”

Source: RevenueBase Database · checked Sep 24, 2026
3Partial evidenceBirmingham, United KingdomHQ checked Sep 24, 2026501-1,000190 contacts →

Partial evidence

“At Actemium UK, we are expert electrical, automation and mechanical engineers delivering bespoke engineering solutions across industry, infrastructure and beyond.”

Source: RevenueBase Database · checked Sep 24, 2026
4Indirect evidenceWarwick, United KingdomHQ checked Sep 24, 202651-200159 contacts →

Indirect evidence

“Founded in 1960, today we are one of the world's leading product design and development consultancies.”

Source: RevenueBase Database · checked Sep 24, 2026
5Partial evidenceBasildon, United KingdomHQ checked Sep 24, 2026501-1,000159 contacts →

Partial evidence

“Contechs is a strategic partner to the automotive industry, providing innovative design and engineering services to global OEMs, from concept to production.”

Source: RevenueBase Database · checked Sep 24, 2026
6Indirect evidenceSwavesey, United KingdomHQ checked Sep 24, 2026201-500156 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 24, 2026
7Partial evidenceExhall, United KingdomHQ checked Sep 24, 2026501-1,000150 contacts →

Partial evidence

“Nasmyth is a cohesive group of engineering businesses that consistently provides high quality services and products.”

Source: RevenueBase Database · checked Sep 24, 2026
8Indirect evidenceMaidenhead, United KingdomHQ checked Sep 24, 202651-200110 contacts →

Indirect evidence

“Avnet Integrated is the consultancy and solutions division of Avnet.”

Source: RevenueBase Database · checked Sep 24, 2026
9Partial evidenceCoventry, United KingdomHQ checked Sep 24, 2026201-500109 contacts →

Partial evidence

“PDSL is an Engineering & IT Services Company specialized in Niche technologies in the field of Automotive, Rail, Energy, Telecoms, Aerospace & OEM’s.”

Source: RevenueBase Database · checked Sep 24, 2026
10Partial evidenceCoventry, United KingdomHQ checked Sep 24, 202651-20087 contacts →

Partial evidence

“Global Engineering & IT service provider spanning 15+ years across many of the world’s leading companies in Automotive, Aerospace, Sustainability and Technology.Strategically…”

Source: RevenueBase Database · checked Sep 24, 2026
11Indirect evidenceHeald Green, United KingdomHQ checked Sep 24, 202611-5079 contacts →

Indirect evidence

“We empower customers to create superior products and services, forging a collaborative, efficient, and sustainable world.”

Source: RevenueBase Database · checked Sep 24, 2026
12Indirect evidenceCambourne, United KingdomHQ checked Sep 24, 202651-20077 contacts →

Indirect evidence

“42 Technology is a product development and technology innovation consultancy based near Cambridge, UK.”

Source: RevenueBase Database · checked Sep 24, 2026
13Partial evidenceDunfermline, United KingdomHQ checked Sep 24, 202651-20076 contacts →

Partial evidence

“Bitwise enabling innovation with software engineering excellence.”

Source: RevenueBase Database · checked Sep 24, 2026
14Partial evidenceLondon, United KingdomHQ checked Sep 24, 202651-20073 contacts →

Partial evidence

“ALDIA is an international consulting firm specializing in IT & Engineering, dedicated to driving digital transformation and innovation.”

Source: RevenueBase Database · checked Sep 24, 2026
15Partial evidenceBristol, United KingdomHQ checked Sep 24, 202611-5063 contacts →

Partial evidence

“CFMS is an independent digital engineering consultancy, providing design & analysis services, consultancy and IT infrastructure to help organisations create better solutions to…”

Source: RevenueBase Database · checked Sep 24, 2026
16Partial evidencePlymouth, United KingdomHQ checked Sep 24, 202651-20059 contacts →

Partial evidence

“Hymec is one of the most progressive engineering companies within the UK manufacturing sector and beyond, consistently delivering a class-leading service in the aerospace…”

Source: RevenueBase Database · checked Sep 24, 2026
17Partial evidenceBournemouth Airport, United KingdomHQ checked Sep 24, 202651-20057 contacts →

Partial evidence

“KDC Projects delivers technically led engineering work packages across design, analysis, systems and safety, providing the capacity and capability, and providing professional…”

Source: RevenueBase Database · checked Sep 24, 2026
18Partial evidenceBristol, United KingdomHQ checked Sep 24, 202651-20050 contacts →

Partial evidence

“N-and Group Ltd specialise in design and development of engineering products.”

Source: RevenueBase Database · checked Sep 24, 2026
19Partial evidenceHereford, United KingdomHQ checked Sep 24, 202651-20048 contacts →

Partial evidence

“We provide in-house comprehensive engineering for all disciplines such as mechanical (3d modelling), electrical & instrumentation.”

Source: RevenueBase Database · checked Sep 24, 2026
20Indirect evidenceDarlington, United KingdomHQ checked Sep 24, 202651-20044 contacts →

Indirect evidence

“Welcome to Paragon Rapid Technologies, a proud member of the Global Precision Group of companies committed to delivering innovation, quality, scalability, and precision-engineered…”

Source: RevenueBase Database · checked Sep 24, 2026
21Partial evidenceCoventry, United KingdomHQ checked Sep 24, 2026201-50044 contacts →

Partial evidence

“Penso is a world leading manufacturing specialist, providing a complete turnkey engineering service to customers across the globe.”

Source: RevenueBase Database · checked Sep 24, 2026
22Partial evidenceStirling, United KingdomHQ checked Sep 24, 202611-5043 contacts →

Partial evidence

“Peacock Technology is an engineering consultancy company with capabilities in electronics design, PCB layout, embedded software, machine vision, PC software and mechanical design.”

Source: RevenueBase Database · checked Sep 24, 2026
23Partial evidenceSouthampton, United KingdomHQ checked Sep 24, 202611-5037 contacts →

Partial evidence

“ITDev is a software and electronic engineering consultancy with a track record of outstanding quality and customer service spanning 20 years.”

Source: RevenueBase Database · checked Sep 24, 2026
24Indirect evidenceLondon, United KingdomHQ checked Sep 24, 2026n/a37 contacts →

Indirect evidence

“Improving the success of product innovation and development through creative design and breakthrough thinking.”

Source: RevenueBase Database · checked Sep 24, 2026
25Indirect evidenceBristol, United KingdomHQ checked Sep 24, 202651-20035 contacts →

Indirect evidence

“Since 1991, IES has specialised in the relocation, installation and commissioning of high-technology, business-critical equipment for OEMs and end-users across the semiconductor…”

Source: RevenueBase Database · checked Sep 24, 2026

Showing 25 of 2,208 engineering outsourcing companies based in the United Kingdom

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Engineering outsourcing companies based in the United Kingdom at a glance

As of Sep 24, 2026
40.0%Verified-email coverage
4.2%Mobile-number coverage
16.8Average contacts per company
1-10Median size (employees)
5.5%Largest-city concentration · London
Sep 24, 2026Page data refreshed

Companies by employee count

1-10
859
11-50
234
51-200
62
201-500
11
501-1,000
5
1,001-5,000
2
10001+
2

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 27.0d

Company record updated

Median 90.0d

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 engineering outsourcing 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 “engineering outsourcing 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 engineering outsourcing 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 engineering outsourcing 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, 14,889 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 24, 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.

Engineering outsourcing companies by metro

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 engineering outsourcing 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 engineering outsourcing companies are there based in the United Kingdom?

RevenueBase identified 2,208 engineering outsourcing 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?

2h Offshore, headquartered in Woking, tops this list with the largest team on record.

Which city has the most engineering outsourcing companies?

London leads with 121 headquartered companies, followed by Birmingham (30) and Bristol (25).

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 14,889 verified decision-maker contacts tracked across these 2,208 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 24, 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.