Company lists · Data refreshed September 2026

Top 25 Engineering outsourcing firms based in London, United Kingdom

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

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 245 companies tracked

RevenueBase identified 245 engineering outsourcing firms headquartered in London, United Kingdom as of September 2026 and tracks 2,009 professional contacts across them, including 593 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers engineering outsourcing firms 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 28, 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 28, 2026 86% judged on-target in blind review

245Companies

2,009Contacts tracked

593Verified emails

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

Ranked by team size

Top 25 of 245 engineering outsourcing firms based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to engineering outsourcing firms: 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	AKT II	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	310 contacts →
	Partial evidence “AKT II is a design-led interdisciplinary engineering consultancy that has won over 600 awards for its work in the UK and across the world.” Source: RevenueBase Database · checked Sep 28, 2026
2	Emvigo Technologies	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	204 contacts →
	Indirect evidence “Emvigo Technologies – The Power of Getting Things Done We believe that great ideas don’t just happen-they need the right team to bring them to life, fast.” Source: RevenueBase Database · checked Sep 28, 2026
3	YLD	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	166 contacts →
	Partial evidence “YLD is a software engineering, data engineering, and product design consultancy, specialising in customer experience and disruptive technologies.” Source: RevenueBase Database · checked Sep 28, 2026
4	GER Consultancy	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	n/a	102 contacts →
	Partial evidence “GER Consultancy specialises in the selection and provision of qualified and experienced engineering and technical personnel to clients within the Steel, Power Generation and Oil &…” Source: RevenueBase Database · checked Sep 28, 2026
5	OVYO	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	91 contacts →
	Partial evidence “Ovyo provides rapid access to specialist people and teams in software engineering, operations & delivery throughout the streaming/OTT/media, satellite/space and comms industries.” Source: RevenueBase Database · checked Sep 28, 2026
6	ALDIA	Partial evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
7	Disign Consultants	Indirect evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
8	TB Associates	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	32 contacts →
	Partial evidence “TB Associates was founded in the United Kingdom in 2004 and is a research-based engineering consultancy company.” Source: RevenueBase Database · checked Sep 28, 2026
9	Evolve Consulting Engineers	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	26 contacts →
	Indirect evidence “Evolve is a people-focused practice specialising in the structural design of buildings and associated civil works, across all sectors.” Source: RevenueBase Database · checked Sep 28, 2026
10	Engineurs	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	25 contacts →
	Partial evidence “From Innovation to Impact \| Engineurs combines award-winning engineering solutions with your future-focused vision to create flawless processes and operational excellence.” Source: RevenueBase Database · checked Sep 28, 2026
11	NGOAR	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	21 contacts →
	Indirect evidence “Ngoar is a pioneering software solutions and technology company.” Source: RevenueBase Database · checked Sep 28, 2026
12	CAD Network LTD	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	18 contacts →
	Indirect evidence “CAD Network is a team of dedicated outsourced CAD staff available for short and long term projects.” Source: RevenueBase Database · checked Sep 28, 2026
13	SAYPR	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	16 contacts →
	Indirect evidence “Saypr was founded in 2011 in New York and later incorporated in London, seeking to fulfill the increasing need of sophisticated digital solutions for companies, start-ups…” Source: RevenueBase Database · checked Sep 28, 2026
14	Boostworkforce	Partial evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
15	Sunbim	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	13 contacts →
	Partial evidence “We are a product-centric tech firm specializing in innovative SaaS and custom software solutions, with a dedicated focus on design and engineering automation.” Source: RevenueBase Database · checked Sep 28, 2026
16	Centreline	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	12 contacts →
	Indirect evidence “Award-winning industrial design studio specialising in transforming ideas into exceptional, manufacturable products.” Source: RevenueBase Database · checked Sep 28, 2026
17	The Digital Bench	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	10 contacts →
	Indirect evidence “Empower your digital success by harnessing our expert software engineers and project teams for seamless capacity and consultancy services.” Source: RevenueBase Database · checked Sep 28, 2026
18	Lester Hamilton	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	9 contacts →
	Partial evidence “Lester Hamilton is a specialist executive search and recruitment consultancy partnering with leading organisations across infrastructure, engineering, sustainability, and…” Source: RevenueBase Database · checked Sep 28, 2026
19	Mule Studio	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	8 contacts →
	Indirect evidence “Whether we’re leading the creative vision through Mule.Design or solving technical challenges through Mule.Engine, our goal is the same: turning ambitious ideas into reality.” Source: RevenueBase Database · checked Sep 28, 2026
20	Swax Engineering LTD	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	7 contacts →
	Partial evidence “Need to add more engineering skills whilst reducing costs?” Source: RevenueBase Database · checked Sep 28, 2026
21	RPDK	Indirect evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
22	Sibling	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	7 contacts →
	Partial evidence “SIBLING is a Specialist engineering recruitment for the industries that keep the world running.” Source: RevenueBase Database · checked Sep 28, 2026
23	KPT Design	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	6 contacts →
	Partial evidence “KPT Design delivers first-class engineering services.” Source: RevenueBase Database · checked Sep 28, 2026
24	Lionicus	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	6 contacts →
	Indirect evidence “Software.” Source: RevenueBase Database · checked Sep 28, 2026
25	Phase Design & Engineering	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	5 contacts →
	Partial evidence “Phase Design & Engineering Ltd was formed with the intention of producing credible and buildable E&P designs.” Source: RevenueBase Database · checked Sep 28, 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 firms. 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 firms.
Partial evidence: Its own public description names part of engineering outsourcing firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name engineering outsourcing firms. 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 245 engineering outsourcing firms based in London, United Kingdom

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

As of Sep 28, 2026

29.5%Verified-email coverage

8.2Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

176

11-50

51-200

201-500

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 245 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 firms, 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 firms”. 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 firms), 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 firms, 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, 593 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 28, 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 firms 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 firms, 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 firms are there based in London, United Kingdom?

RevenueBase identified 245 engineering outsourcing firms 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?

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

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

London leads the United Kingdom with 245 headquartered companies, followed by Birmingham (44) and Bristol (38).

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 593 verified decision-maker contacts tracked across these 245 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 28, 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.