Company lists · Data refreshed September 2026

Top 25 Epa consulting firms based in the United Kingdom

Name: Epa consulting firms based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 974 companies tracked

RevenueBase identified 974 epa consulting firms headquartered in the United Kingdom as of September 2026 and tracks 25,048 professional contacts across them, including 12,654 with verified work emails. London is the largest hub.

This list covers epa consulting firms headquartered in the 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

974Companies

25,048Contacts tracked

12,654Verified emails

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The 25 largest epa consulting firms based in the United Kingdom

Ranked by team size

Top 25 of 974 epa consulting firms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to epa 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	ERM	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	5,001-10,000	9,119 contacts →
	Indirect evidence “Sustainability is our business.” Source: RevenueBase Database · checked Sep 28, 2026
2	SLR Consulting	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	3,848 contacts →
	Indirect evidence “SLR is a committed partner in our clients’ sustainability journeys.” Source: RevenueBase Database · checked Sep 28, 2026
3	RSK Group	Indirect evidence	Helsby, United KingdomHQ checked Sep 28, 2026	10001+	1,255 contacts →
	Indirect evidence “RSK Group is a global leader in the delivery of environmental and engineering solutions.” Source: RevenueBase Database · checked Sep 28, 2026
4	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
5	Valpak Limited	Indirect evidence	Stratford-upon-avon, United KingdomHQ checked Sep 28, 2026	201-500	347 contacts →
	Indirect evidence “Valpak, a Reconomy brand, is an EcoVadis Platinum certified leader in environmental compliance, recycling, and sustainability solutions.” Source: RevenueBase Database · checked Sep 28, 2026
6	Atelier TEN	Indirect evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
7	Wardell Armstrong LLP NOW SLR	Indirect evidence	Birmingham, United KingdomHQ checked Sep 28, 2026	501-1,000	253 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
8	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
9	JURU	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	176 contacts →
	Indirect evidence “Founded in 2015, Juru is an international engineering and consultancy firm with a mission to solve engineering and environmental problems.” Source: RevenueBase Database · checked Sep 28, 2026
10	RSK Biocensus	Indirect evidence	Helsby, United KingdomHQ checked Sep 28, 2026	201-500	164 contacts →
	Indirect evidence “RSK Biocensus is an ecological consultancy with a presence across the country and an extensive network of ecologists throughout the UK.” Source: RevenueBase Database · checked Sep 28, 2026
11	Lucion	Indirect evidence	Gateshead, United KingdomHQ checked Sep 28, 2026	501-1,000	162 contacts →
	Indirect evidence “We're not just service providers; we're your long-term partners in creating a sustainable, compliant, and efficient future for your assets.” Source: RevenueBase Database · checked Sep 28, 2026
12	Aqua Consultants	Indirect evidence	Leeds, United KingdomHQ checked Sep 28, 2026	51-200	156 contacts →
	Indirect evidence “Aqua Consultants provide tailored environmental consultancy to broaden your thinking, lead transformation, and achieve successful outcomes.” Source: RevenueBase Database · checked Sep 28, 2026
13	Arthian LTD	Partial evidence	Glasgow, United KingdomHQ checked Sep 28, 2026	201-500	153 contacts →
	Partial evidence “Arthian has been established following a merger between Mabbett and IKM Consulting.” Source: RevenueBase Database · checked Sep 28, 2026
14	Eunomia Research & Consulting	Indirect evidence	Bristol, United KingdomHQ checked Sep 28, 2026	51-200	143 contacts →
	Indirect evidence “At Eunomia, we're social-environmental problem-solvers and researchers with a difference.” Source: RevenueBase Database · checked Sep 28, 2026
15	Thomson Environmental Consultants	Indirect evidence	Guildford, United KingdomHQ checked Sep 28, 2026	51-200	133 contacts →
	Indirect evidence “Thomson Environmental Consultants are experts in environmental compliance with offices in Guildford, Leeds, Cardiff, Birmingham and Manchester.” Source: RevenueBase Database · checked Sep 28, 2026
16	Yordas Group	Indirect evidence	Lancaster, United KingdomHQ checked Sep 28, 2026	51-200	112 contacts →
	Indirect evidence “In 2026, Yordas Group was acquired by 3E, the leading global provider of expert-led AI compliance solutions for chemical and workplace safety, product stewardship, and sustainable…” Source: RevenueBase Database · checked Sep 28, 2026
17	Greengage Environmental LTD	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	93 contacts →
	Indirect evidence “Greengage is an independent sustainability and environmental consultancy known for providing bespoke advice and working in partnership with our clients and multi-disciplinary…” Source: RevenueBase Database · checked Sep 28, 2026
18	AES Sustainability Consultants	Indirect evidence	Tiverton, United KingdomHQ checked Sep 28, 2026	51-200	92 contacts →
	Indirect evidence “AES Sustainability Consultants is a leading technical consultancy that delivers value engineered solutions across the homebuilding and construction industries.” Source: RevenueBase Database · checked Sep 28, 2026
19	Cura Terrae Land & Nature	Indirect evidence	Sheffield, United KingdomHQ checked Sep 28, 2026	51-200	92 contacts →
	Indirect evidence “Our multidisciplinary teams work together to combine their expertise in ecology, the historic environment, environmental impact assessment, landscape architecture, habitat…” Source: RevenueBase Database · checked Sep 28, 2026
20	Lanpro	Indirect evidence	Norwich, United KingdomHQ checked Sep 28, 2026	51-200	87 contacts →
	Indirect evidence “We are planning-led multi-disciplinary environmental consultants.” Source: RevenueBase Database · checked Sep 28, 2026
21	Ecology Solutions	Indirect evidence	Broadway, United KingdomHQ checked Sep 28, 2026	11-50	85 contacts →
	Indirect evidence “Ecology Solutions is a leading multidisciplinary environmental consultancy, specialising in ecology, archaeology and heritage, landscape design, mitigation and biodiversity.” Source: RevenueBase Database · checked Sep 28, 2026
22	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
23	clearvue.business	Partial evidence	Gateshead, United KingdomHQ checked Sep 28, 2026	51-200	81 contacts →
	Partial evidence “We enable businesses to succeed in the environmental components of their ESG strategies through comprehensive net zero consulting services and ground-breaking carbon and energy…” Source: RevenueBase Database · checked Sep 28, 2026
24	Stephenson Halliday	Indirect evidence	Kendal, United KingdomHQ checked Sep 28, 2026	51-200	80 contacts →
	Indirect evidence “We believe that high quality, well planned development is the driver for sustainable economic growth.” Source: RevenueBase Database · checked Sep 28, 2026
25	Assurity Consulting LTD	Partial evidence	Horsham, United KingdomHQ checked Sep 28, 2026	51-200	77 contacts →
	Partial evidence “Founded in 1986, Assurity Consulting is an independent workplace compliance consultancy specialising in health, safety and environmental solutions, partnering with responsible…” 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: epa 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 epa consulting firms.
Partial evidence: Its own public description names part of epa consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name epa 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 974 epa consulting firms based in the United Kingdom

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Epa consulting firms based in the United Kingdom at a glance

As of Sep 28, 2026

50.5%Verified-email coverage

25.7Average contacts per company

1-10Median size (employees)

19.5%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

680

11-50

206

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 974 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 epa 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 the United Kingdom whose own description of what they do matches “epa 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 epa 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 epa consulting firms, and records with no verified work email. Companies headquartered outside United Kingdom 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, 12,654 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.

Epa consulting firms by metro

Epa consulting firms in London190

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 epa 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 epa consulting firms are there based in the United Kingdom?

RevenueBase identified 974 epa consulting firms headquartered in the 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?

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

Which city has the most epa consulting firms?

London leads with 190 headquartered companies, followed by Bristol (21) and Edinburgh (19).

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 12,654 verified decision-maker contacts tracked across these 974 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.