Company lists · Data refreshed September 2026

Top 25 Engineering consultancies based in London, United Kingdom

Name: Engineering consultancies 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 2,417 companies tracked

RevenueBase identified 2,417 engineering consultancies headquartered in London, United Kingdom as of September 2026 and tracks 118,304 professional contacts across them, including 50,109 with verified work emails. London is the largest hub.

This list covers engineering consultancies 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

2,417Companies

118,304Contacts tracked

50,109Verified emails

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The 25 largest engineering consultancies based in London, United Kingdom

Ranked by team size

Top 25 of 2,417 engineering consultancies 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 consultancies: 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	ARUP	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	10001+	21,018 contacts →
	Indirect evidence “We guide, plan and design the future of the built environment.” Source: RevenueBase Database · checked Sep 24, 2026
2	Mott Macdonald	Partial evidence	London, United KingdomHQ checked Sep 24, 2026	10001+	19,072 contacts →
	Partial 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 24, 2026
3	MACE	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	5,001-10,000	8,458 contacts →
	Indirect evidence “Mace Consult launched as a new and independent business on 5 March 2026, through a carve-out from Mace Group.” Source: RevenueBase Database · checked Sep 24, 2026
4	Lloyd's Register	Indirect evidence	London, United KingdomHQ checked Sep 24, 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 24, 2026
5	Keller	Indirect evidence	London, United KingdomHQ checked Sep 24, 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 24, 2026
6	Murphy	Partial evidence	London, United KingdomHQ checked Sep 24, 2026	1,001-5,000	3,095 contacts →
	Partial 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 24, 2026
7	Gardiner & Theobald LLP	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	501-1,000	1,255 contacts →
	Indirect evidence “G&T is an independent construction and property consultancy for the built environment.” Source: RevenueBase Database · checked Sep 24, 2026
8	Faithful Gould	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	1,001-5,000	1,194 contacts →
	Indirect evidence “Faithful+Gould is now AtkinsRéalis.” Source: RevenueBase Database · checked Sep 24, 2026
9	Hoare LEA	Partial evidence	London, United KingdomHQ checked Sep 24, 2026	501-1,000	1,103 contacts →
	Partial evidence “We are an award-winning engineering consultancy with a creative team of engineers, designers, and technical specialists.” Source: RevenueBase Database · checked Sep 24, 2026
10	Progressive	Partial evidence	London, United KingdomHQ checked Sep 24, 2026	201-500	1,089 contacts →
	Partial 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 24, 2026
11	Penspen	Indirect evidence	London, United KingdomHQ checked Sep 24, 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 24, 2026
12	ABL	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	1,001-5,000	804 contacts →
	Indirect evidence “The Energy and Marine Consultants - an Aqualis company.” Source: RevenueBase Database · checked Sep 24, 2026
13	RED Engineering Design	Partial evidence	London, United KingdomHQ checked Sep 24, 2026	501-1,000	785 contacts →
	Partial 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 24, 2026
14	Systra UK & Ireland	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	1,001-5,000	707 contacts →
	Indirect evidence “Helping the world move forward with confidence.” Source: RevenueBase Database · checked Sep 24, 2026
15	Pell Frischmann	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	501-1,000	690 contacts →
	Indirect evidence “Pell Frischmann is a specialist advisory and technical consultancy operating across the built and natural environment, helping to shape a better future for the communities in…” Source: RevenueBase Database · checked Sep 24, 2026
16	Ricardo PLC	Indirect evidence	London, United KingdomHQ checked Sep 24, 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 24, 2026
17	Aureos	Partial evidence	London, United KingdomHQ checked Sep 24, 2026	1,001-5,000	583 contacts →
	Partial 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 24, 2026
18	Network Rail Consulting	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	51-200	582 contacts →
	Indirect evidence “Our Rail Experts Have Transformed The Performance Of Britain’s Railway…They Can Help You Transform Yours Network Rail Consulting is the wholly owned international consultancy arm…” Source: RevenueBase Database · checked Sep 24, 2026
19	Waterman Group	Partial evidence	London, United KingdomHQ checked Sep 24, 2026	1,001-5,000	563 contacts →
	Partial 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 24, 2026
20	Alten LTD - UK	Partial evidence	London, United KingdomHQ checked Sep 24, 2026	10001+	529 contacts →
	Partial evidence “We are a leading Engineering and IT consultancy operating across all sectors in 30 different countries.” Source: RevenueBase Database · checked Sep 24, 2026
21	STEER	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	201-500	524 contacts →
	Indirect evidence “Complex challenges.” Source: RevenueBase Database · checked Sep 24, 2026
22	Kilnbridge	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	1,001-5,000	482 contacts →
	Indirect evidence “Kilnbridge is the UK’s leading structures specialist, delivering some of the most complex and iconic construction and infrastructure projects nationwide for 35 years.” Source: RevenueBase Database · checked Sep 24, 2026
23	Beck & Pollitzer	Partial evidence	London, United KingdomHQ checked Sep 24, 2026	1,001-5,000	443 contacts →
	Partial evidence “Beck & Pollitzer is the world’s leading provider of complex engineering solutions, including industrial installation and relocation services.” Source: RevenueBase Database · checked Sep 24, 2026
24	Purcell	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	201-500	386 contacts →
	Indirect evidence “We work as one family of many experts: architects, designers, heritage leaders and specialist consultants.” Source: RevenueBase Database · checked Sep 24, 2026
25	CPC Project Services	Indirect evidence	London, United KingdomHQ checked Sep 24, 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 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 consultancies. 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 consultancies.
Partial evidence: Its own public description names part of engineering consultancies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name engineering consultancies. 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 2,417 engineering consultancies based in London, United Kingdom

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Engineering consultancies based in London, United Kingdom at a glance

As of Sep 24, 2026

42.4%Verified-email coverage

48.9Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · London

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

1,465

11-50

653

51-200

191

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 2,417 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 consultancies, 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 consultancies”. 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 consultancies), 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 consultancies, 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, 50,109 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 consultancies 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 consultancies, 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 consultancies are there based in London, United Kingdom?

RevenueBase identified 2,417 engineering consultancies 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?

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

Which city has the most engineering consultancies?

London leads with 2417 headquartered companies, followed by Manchester (340) and Bristol (250).

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 50,109 verified decision-maker contacts tracked across these 2,417 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.