Company lists · Data refreshed September 2026

Top 25 Engineering outsourcing companies based in London, United Kingdom

Name: Engineering outsourcing companies based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 24, 2026 121 companies tracked

RevenueBase identified 121 engineering outsourcing companies headquartered in London, United Kingdom as of September 2026 and tracks 520 professional contacts across them, including 69 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers engineering outsourcing companies headquartered in London, 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

121Companies

520Contacts tracked

69Verified emails

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The 25 largest engineering outsourcing companies based in London, United Kingdom

Ranked by team size

Top 25 of 121 engineering outsourcing companies based in London, 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	ALDIA	Partial evidence	London, United KingdomHQ checked Sep 24, 2026	51-200	73 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
2	Disign Consultants	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	n/a	37 contacts →
	Indirect evidence “Improving the success of product innovation and development through creative design and breakthrough thinking.” Source: RevenueBase Database · checked Sep 24, 2026
3	Boostworkforce	Partial evidence	London, United KingdomHQ checked Sep 24, 2026	11-50	15 contacts →
	Partial evidence “BoostWorkforce is a platform for product engineering and product design service on a subscription basis.” Source: RevenueBase Database · checked Sep 24, 2026
4	Swax Engineering LTD	Partial evidence	London, United KingdomHQ checked Sep 24, 2026	11-50	7 contacts →
	Partial evidence “Need to add more engineering skills whilst reducing costs?” Source: RevenueBase Database · checked Sep 24, 2026
5	RPDK	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	11-50	7 contacts →
	Indirect evidence “RPDK operates as the new product development, manufacturing and supply chain elements of your business, to help you think big and move quick.” Source: RevenueBase Database · checked Sep 24, 2026
6	R&a Consultants	Partial evidence	London, United KingdomHQ checked Sep 24, 2026	1-10	5 contacts →
	Partial evidence “Welcome to R&A, where we excel in crafting tailored recruitment solutions exclusively designed for the dynamic engineering sector.” Source: RevenueBase Database · checked Sep 24, 2026
7	Accelerated People Management LTD	Partial evidence	London, United KingdomHQ checked Sep 24, 2026	1-10	4 contacts →
	Partial evidence “Engineering & Technical consultancy on a mission to add genuine value to growing enterprises globally, through exceptional motivational matching and introduction of the best…” Source: RevenueBase Database · checked Sep 24, 2026
8	GW Development LTD	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	1-10	4 contacts →
	Indirect evidence “GW Development is a versatile, creative design and manufacturing agency.” Source: RevenueBase Database · checked Sep 24, 2026
9	Nestling Engineering	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	1-10	4 contacts →
	Indirect evidence “We have an experienced team of design engineers, project managers, mechanical, electrical, and software engineers.” Source: RevenueBase Database · checked Sep 24, 2026
10	Roadways Consulting LTD	Partial evidence	London, United KingdomHQ checked Sep 24, 2026	1-10	4 contacts →
	Partial evidence “Roadways Consulting Ltd is an online engineering consultancy that specialises in the design of small and medium highway engineering schemes from feasibility to detailed design.” Source: RevenueBase Database · checked Sep 24, 2026
11	Hash Define Electronics	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	1-10	3 contacts →
	Indirect evidence “Based in Leeds, West Yorkshire, Hash Define Electronics Ltd can offer consultancy and development services in embedded electronics, mechanical, ATEX intrinsic designs, and…” Source: RevenueBase Database · checked Sep 24, 2026
12	Abtin Valerie	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	1-10	2 contacts →
	Indirect evidence “Abtin Valerie is an industrial design & product development studio focused on turning physical product ideas into manufacturing-ready outcomes.” Source: RevenueBase Database · checked Sep 24, 2026
13	Convex Technology LTD	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	1-10	2 contacts →
	Indirect evidence “We are your trusted partner in transforming your concepts into tangible, manufacturable products, bridging the gap between imagination and market success.” Source: RevenueBase Database · checked Sep 24, 2026
14	Iliac Design Limited	Partial evidence	London, United KingdomHQ checked Sep 24, 2026	11-50	2 contacts →
	Partial evidence “IDL is an Engineering Design & Recruitment Business, based in the UK with global reach.” Source: RevenueBase Database · checked Sep 24, 2026
15	Lorro Precision	Partial evidence	London, United KingdomHQ checked Sep 24, 2026	1-10	2 contacts →
	Partial evidence “Design, engineering and manufacturing for prototypes and production.” Source: RevenueBase Database · checked Sep 24, 2026
16	Ini-Dim Labs	Partial evidence	London, United KingdomHQ checked Sep 24, 2026	1-10	2 contacts →
	Partial evidence “Engineering Consulting Services” Source: RevenueBase Database · checked Sep 24, 2026
17	Make Engineering	Partial evidence	London, United KingdomHQ checked Sep 24, 2026	1-10	2 contacts →
	Partial evidence “London based Design and Engineering consultancy.” Source: RevenueBase Database · checked Sep 24, 2026
18	Momentum Design LTD	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	1-10	2 contacts →
	Indirect evidence “Momentum Design will help you quickly push forward in the right direction; transform your idea into a physical product; develop your story and company image; produce illustrations…” Source: RevenueBase Database · checked Sep 24, 2026
19	Artengi LTD	Partial evidence	London, United KingdomHQ checked Sep 24, 2026	11-50	1 contacts →
	Partial evidence “We at Artengi leverage a network of associates who specialize in various engineering areas to provide services in system, mechanical, electronics and software design with…” Source: RevenueBase Database · checked Sep 24, 2026
20	Many Pebbles	Partial evidence	London, United KingdomHQ checked Sep 24, 2026	1-10	1 contacts →
	Partial evidence “Many Pebbles offers Research & Development, Supply Chain Management and Production Engineering services to technology companies who are developing physical products and scaling…” Source: RevenueBase Database · checked Sep 24, 2026
21	DV Energy	Partial evidence	London, United KingdomHQ checked Sep 24, 2026	1-10	1 contacts →
	Partial evidence “Established in 2019, DV Energy is an engineering consultancy firm specialized in Power & Energy sector.” Source: RevenueBase Database · checked Sep 24, 2026
22	Silex Embedded LTD	Partial evidence	London, United KingdomHQ checked Sep 24, 2026	1-10	1 contacts →
	Partial evidence “London based engineering consultancy specialising in Embedded Software and Design for Manufacturing.” Source: RevenueBase Database · checked Sep 24, 2026
23	NBT Labs	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	1-10	1 contacts →
	Indirect evidence “NBT Labs helps companies to develop their software projects.” Source: RevenueBase Database · checked Sep 24, 2026
24	ENR Consulting Engineers	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	1-10	1 contacts →
	Indirect evidence “ENR Consulting Engineers are a friendly, agile and dynamic group of experienced engineers with a keen eye for detail and efficient design.” Source: RevenueBase Database · checked Sep 24, 2026
25	Machine Design Automation LTD	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	1-10	1 contacts →
	Indirect evidence “Founded and led by Darren Redford, supported by a trusted team of trusted partners and contractors, we have over 20 years of expertise and technical know how within the…” Source: RevenueBase Database · checked Sep 24, 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: engineering outsourcing companies. 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 engineering outsourcing companies.
Partial evidence: Its own public description names part of engineering outsourcing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name engineering outsourcing companies. 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 121 engineering outsourcing companies based in London, United Kingdom

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Engineering outsourcing companies based in London, United Kingdom at a glance

As of Sep 24, 2026

13.3%Verified-email coverage

4.3Average contacts per company

1-10Median size (employees)

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

501-1,000

Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 121 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 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 London, 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 London 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, 69 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 in the United Kingdom

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 London, United Kingdom?

RevenueBase identified 121 engineering outsourcing companies headquartered in London, 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?

ALDIA, headquartered in London, tops this list with the largest team on record.

Which city in the United Kingdom has the most engineering outsourcing companies?

London leads the United Kingdom 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 69 verified decision-maker contacts tracked across these 121 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.