Company lists · Data refreshed September 2026

Top 25 Engineering companies based in London, United Kingdom

Name: Engineering 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 6, 2026 1,342 companies tracked

This directory lists 1,342 engineering companies based in London, United Kingdom, with 72,411 contacts and 24,877 email addresses. The list includes companies across engineering disciplines. Use it to identify potential suppliers, partners, and sales prospects as of September 2026. Across the United Kingdom, London is the largest hub for this category.

Engineering companies apply scientific, mathematical, and technical principles to design, develop, test, and manage products, systems, structures, or industrial processes. This list covers companies that provide engineering design, consulting, testing, project management, or related technical services. Ranked by team size, largest first. Data current as of September 6, 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 6, 2026 86% judged on-target in blind review

1,342Companies

72,411Contacts tracked

24,877Verified emails

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The 25 largest engineering companies based in London, United Kingdom

Ranked by team size

Top 25 of 1,342 engineering companies based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to engineering 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	Mott Macdonald	Strong evidence	London, United KingdomHQ checked Sep 6, 2026	10001+	19,072 contacts →
	Strong evidence “We are an engineering, management and development consultancy and one of the largest wholly employee-owned firms of our kind.” Source: RevenueBase Database · checked Sep 6, 2026
2	Lloyd's Register	Indirect evidence	London, United KingdomHQ checked Sep 6, 2026	5,001-10,000	4,722 contacts →
	Indirect evidence “We started out in 1760 as a marine classification society.” Source: RevenueBase Database · checked Sep 6, 2026
3	Keller	Indirect evidence	London, United KingdomHQ checked Sep 6, 2026	5,001-10,000	3,960 contacts →
	Indirect evidence “Every day, people around the world live, work and play on ground prepared by Keller, the world's largest geotechnical specialist contractor.” Source: RevenueBase Database · checked Sep 6, 2026
4	Costain Group PLC	Indirect evidence	London, United KingdomHQ checked Sep 6, 2026	1,001-5,000	3,785 contacts →
	Indirect evidence “Costain helps to improve people’s lives by creating connected, sustainable infrastructure that enables people and the planet thrive.” Source: RevenueBase Database · checked Sep 6, 2026
5	Murphy	Strong evidence	London, United KingdomHQ checked Sep 6, 2026	1,001-5,000	3,095 contacts →
	Strong evidence “Murphy is a leading international, multi-disciplined engineering and construction company founded in 1951 that improves life by delivering world-class infrastructure.” Source: RevenueBase Database · checked Sep 6, 2026
6	Faithful Gould	Indirect evidence	London, United KingdomHQ checked Sep 6, 2026	1,001-5,000	1,194 contacts →
	Indirect evidence “Faithful+Gould is now AtkinsRéalis.” Source: RevenueBase Database · checked Sep 6, 2026
7	Hoare LEA	Strong evidence	London, United KingdomHQ checked Sep 6, 2026	501-1,000	1,103 contacts →
	Strong evidence “We are an award-winning engineering consultancy with a creative team of engineers, designers, and technical specialists.” Source: RevenueBase Database · checked Sep 6, 2026
8	Progressive	Strong evidence	London, United KingdomHQ checked Sep 6, 2026	201-500	1,089 contacts →
	Strong evidence “Fusing engineering innovation and ambition Progressive is an Engineering specialist and part of SThree, the global STEM workforce consultancy.” Source: RevenueBase Database · checked Sep 6, 2026
9	Penspen	Indirect evidence	London, United KingdomHQ checked Sep 6, 2026	1,001-5,000	1,007 contacts →
	Indirect evidence “Penspen designs, maintains, and optimises energy infrastructure to improve access to secure and sustainable energy for communities worldwide.” Source: RevenueBase Database · checked Sep 6, 2026
10	RED Engineering Design	Strong evidence	London, United KingdomHQ checked Sep 6, 2026	501-1,000	785 contacts →
	Strong evidence “RED Engineering Design, a company of Tractebel, is a global engineering consultancy specialising in the design of complex, mission-critical Data Centre and digital infrastructure…” Source: RevenueBase Database · checked Sep 6, 2026
11	Systra UK & Ireland	Indirect evidence	London, United KingdomHQ checked Sep 6, 2026	1,001-5,000	707 contacts →
	Indirect evidence “Helping the world move forward with confidence.” Source: RevenueBase Database · checked Sep 6, 2026
12	Ricardo PLC	Indirect evidence	London, United KingdomHQ checked Sep 6, 2026	1,001-5,000	670 contacts →
	Indirect evidence “Click the 'Follow' button and explore careers at Ricardo on our 'Jobs' and 'Life' tabs and at careers.ricardo.com.” Source: RevenueBase Database · checked Sep 6, 2026
13	Tclarke	Indirect evidence	London, United KingdomHQ checked Sep 6, 2026	1,001-5,000	606 contacts →
	Indirect evidence “TClarke is an industry leader in the design, installation, integration and maintenance of the digital, mechanical and electrical technologies and infrastructures that a 21st…” Source: RevenueBase Database · checked Sep 6, 2026
14	Aureos	Strong evidence	London, United KingdomHQ checked Sep 6, 2026	1,001-5,000	583 contacts →
	Strong evidence “Aureos is a multi-disciplinary energy, transport networks specialist and engineering services provider, spanning the design, engineering, installation, maintenance, and crisis…” Source: RevenueBase Database · checked Sep 6, 2026
15	Waterman Group	Strong evidence	London, United KingdomHQ checked Sep 6, 2026	1,001-5,000	563 contacts →
	Strong evidence “Waterman Group is a multidisciplinary consultancy providing sustainable solutions to meet the planning, engineering design and project delivery needs of the property…” Source: RevenueBase Database · checked Sep 6, 2026
16	Alten LTD - UK	Strong evidence	London, United KingdomHQ checked Sep 6, 2026	10001+	529 contacts →
	Strong evidence “We are a leading Engineering and IT consultancy operating across all sectors in 30 different countries.” Source: RevenueBase Database · checked Sep 6, 2026
17	Beck & Pollitzer	Strong evidence	London, United KingdomHQ checked Sep 6, 2026	1,001-5,000	443 contacts →
	Strong evidence “Beck & Pollitzer is the world’s leading provider of complex engineering solutions, including industrial installation and relocation services.” Source: RevenueBase Database · checked Sep 6, 2026
18	CPC Project Services	Indirect evidence	London, United KingdomHQ checked Sep 6, 2026	201-500	342 contacts →
	Indirect evidence “CPC is an award-winning project management, cost management and building surveying consultancy.” Source: RevenueBase Database · checked Sep 6, 2026
19	MCGEE	Indirect evidence	London, United KingdomHQ checked Sep 6, 2026	201-500	342 contacts →
	Indirect evidence “We’re McGee.” Source: RevenueBase Database · checked Sep 6, 2026
20	Statom Group LTD	Strong evidence	London, United KingdomHQ checked Sep 6, 2026	1,001-5,000	339 contacts →
	Strong evidence “At Statom Group, we are a trusted provider of comprehensive Civil Engineering, Demolition, Remediation, Groundworks, and Structural solutions for the UK market.” Source: RevenueBase Database · checked Sep 6, 2026
21	VVB Engineering	Strong evidence	London, United KingdomHQ checked Sep 6, 2026	201-500	336 contacts →
	Strong evidence “At VVB, we deliver mechanical, electrical, telecommunication, temporaries and fire engineering expertise and services for large-scale infrastructure projects.” Source: RevenueBase Database · checked Sep 6, 2026
22	Atelier TEN	Indirect evidence	London, United KingdomHQ checked Sep 6, 2026	51-200	323 contacts →
	Indirect evidence “As environmental design consultants, building services engineers and lighting designers, we are committed to high performance and sustainable design within the built environment.” Source: RevenueBase Database · checked Sep 6, 2026
23	AKT II	Strong evidence	London, United KingdomHQ checked Sep 6, 2026	201-500	310 contacts →
	Strong 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 6, 2026
24	Troup Bywaters Anders	Strong evidence	London, United KingdomHQ checked Sep 6, 2026	201-500	286 contacts →
	Strong evidence “Troup Bywaters + Anders LLP is a high-performing engineering partnership delivering high quality building services consultancy from eight offices across the UK and Europe.” Source: RevenueBase Database · checked Sep 6, 2026
25	Strabag UK	Indirect evidence	London, United KingdomHQ checked Sep 6, 2026	10001+	257 contacts →
	Indirect evidence “Progress starts with us.” Source: RevenueBase Database · checked Sep 6, 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 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 companies.
Partial evidence: Its own public description names part of engineering companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name engineering 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 1,342 engineering companies based in London, United Kingdom

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Engineering companies based in London, United Kingdom at a glance

As of Sep 6, 2026

34.4%Verified-email coverage

54.0Average contacts per company

1-10Median size (employees)

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

737

11-50

383

51-200

129

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 1,342 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 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 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 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 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, 24,877 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 6, 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 companies by metro in the United Kingdom

Frequently asked

How many engineering companies are based in London, United Kingdom?

The directory lists 1,342 engineering companies based in London, United Kingdom as of September 2026.

What services do engineering companies provide?

Engineering companies provide services such as design, consulting, testing, project management, and technical support across disciplines and industries.

How can I find contacts at engineering companies?

This directory includes 72,411 contacts and 24,877 email addresses associated with engineering companies.

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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.