Company lists · Data refreshed September 2026

Top 25 Infrastructure policy consulting firms based in London, United Kingdom

Name: Infrastructure policy consulting 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 469 companies tracked

RevenueBase identified 469 infrastructure policy consulting firms headquartered in London, United Kingdom as of September 2026 and tracks 27,975 professional contacts across them, including 10,347 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers infrastructure policy consulting 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

469Companies

27,975Contacts tracked

10,347Verified emails

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The 25 largest infrastructure policy consulting firms based in London, United Kingdom

Ranked by team size

Top 25 of 469 infrastructure policy consulting 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 infrastructure policy consulting 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	MACE	Indirect evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
2	Faithful Gould	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	1,194 contacts →
	Indirect evidence “Faithful+Gould is now AtkinsRéalis.” Source: RevenueBase Database · checked Sep 28, 2026
3	Systra UK & Ireland	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	707 contacts →
	Indirect evidence “Helping the world move forward with confidence.” Source: RevenueBase Database · checked Sep 28, 2026
4	Pell Frischmann	Indirect evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
5	Ricardo PLC	Indirect evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
6	Network Rail Consulting	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	582 contacts →
	Partial 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 28, 2026
7	Waterman Group	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	563 contacts →
	Indirect 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 28, 2026
8	Strategy Insights	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	528 contacts →
	Indirect evidence “Strategy Insights is a specialist business and economic development consultancy.” Source: RevenueBase Database · checked Sep 28, 2026
9	STEER	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	524 contacts →
	Indirect evidence “Complex challenges.” Source: RevenueBase Database · checked Sep 28, 2026
10	Analysys Mason	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	459 contacts →
	Partial evidence “Analysys Mason is the leading specialist consultancy, creating lasting value in technology-intensive industries, including telecoms, digital infrastructure, software, IT services…” Source: RevenueBase Database · checked Sep 28, 2026
11	The Erith Group	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	501-1,000	217 contacts →
	Partial evidence “Supported by a network of specialist consulting engineers, environmentalists and our own collective experience, our philosophy is simple: to provide a qualitative economic and…” Source: RevenueBase Database · checked Sep 28, 2026
12	Flint Global	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	214 contacts →
	Partial evidence “Flint specialises in advising businesses and investors on how to navigate and surmount the policy, political, regulatory and competition challenges they face in European and…” Source: RevenueBase Database · checked Sep 28, 2026
13	Project Centre LTD	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	190 contacts →
	Partial evidence “Project Centre, part of Marston Holdings, is a multidisciplinary infrastructure and place consultancy shaping sustainable spaces across the UK.” Source: RevenueBase Database · checked Sep 28, 2026
14	Egis In The UK	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	156 contacts →
	Partial evidence “Egis is a leading global consulting, construction engineering and operating firm.” Source: RevenueBase Database · checked Sep 28, 2026
15	QUOD	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	154 contacts →
	Indirect evidence “Quod is a specialist, independent consultancy at the cutting edge of planning and development economics.” Source: RevenueBase Database · checked Sep 28, 2026
16	Rendel Limited	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	150 contacts →
	Indirect evidence “Rendel celebrated its 185th Anniversary in 2024, making us one of the oldest civil and structural engineering companies in the UK.” Source: RevenueBase Database · checked Sep 28, 2026
17	AMCL	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	145 contacts →
	Partial evidence “AMCL is recognised as the world’s leading specialist infrastructure, asset management and asset information consultancy.” Source: RevenueBase Database · checked Sep 28, 2026
18	ICF Consulting Services	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	141 contacts →
	Strong evidence “ICF is an international consulting firm working in public policy, international development and ports and logistics.” Source: RevenueBase Database · checked Sep 28, 2026
19	NRP Norman Rourke Pryme	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	114 contacts →
	Indirect evidence “Founded in 1947, Norman Rourke Pryme (‘NRP’) is a multi-disciplinary consultancy delivering services across the UK within the construction, transportation, highways, and…” Source: RevenueBase Database · checked Sep 28, 2026
20	SRC Infrastructure	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	114 contacts →
	Partial evidence “SRC Infrastructure has been providing project management and engineering advisory, consultancy and managed service solutions to UK infrastructure clients for 20 years.” Source: RevenueBase Database · checked Sep 28, 2026
21	Campbellreith	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	113 contacts →
	Partial evidence “CampbellReith is an independent firm of consulting engineers providing structural, civil, geotechnical, land quality, development planning and transport planning services.” Source: RevenueBase Database · checked Sep 28, 2026
22	Aecom Engineering Uk&i	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	10001+	110 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
23	Ardent Consulting Engineers	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	96 contacts →
	Strong evidence “Founded in 2005, Ardent Consulting Engineers provide transport and infrastructure planning and engineering advice to the property and land development industry.” Source: RevenueBase Database · checked Sep 28, 2026
24	Agilia Infrastructure Partners	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	86 contacts →
	Partial evidence “Agilia is a specialist infrastructure consultancy.” Source: RevenueBase Database · checked Sep 28, 2026
25	Xco2	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	84 contacts →
	Indirect evidence “We are a multidisciplinary group with backgrounds in engineering, architecture and environmental science, working as consultants for buildings, large developments and masterplans…” 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: infrastructure policy consulting 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 infrastructure policy consulting firms.
Partial evidence: Its own public description names part of infrastructure policy consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name infrastructure policy consulting 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 469 infrastructure policy consulting firms based in London, United Kingdom

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Infrastructure policy consulting firms based in London, United Kingdom at a glance

As of Sep 28, 2026

37.0%Verified-email coverage

59.6Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

284

11-50

130

51-200

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 469 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 infrastructure policy consulting 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 “infrastructure policy consulting 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 infrastructure policy consulting 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 infrastructure policy consulting 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, 10,347 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.

Infrastructure policy consulting firms by metro in the United Kingdom

Infrastructure policy consulting firms in Manchester25

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 infrastructure policy consulting 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 infrastructure policy consulting firms are there based in London, United Kingdom?

RevenueBase identified 469 infrastructure policy consulting 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?

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

Which city in the United Kingdom has the most infrastructure policy consulting firms?

London leads the United Kingdom with 469 headquartered companies, followed by Manchester (25) and Edinburgh (20).

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 10,347 verified decision-maker contacts tracked across these 469 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.