Company lists · Data refreshed September 2026

Top 25 Environmental engineering firms based in the United Kingdom

Name: Environmental engineering 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 16, 2026 501 companies tracked

RevenueBase identified 501 environmental engineering firms headquartered in the United Kingdom as of September 2026 and tracks 8,629 professional contacts across them, including 3,492 with verified work emails. London is the largest hub.

This list covers environmental engineering 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 16, 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 16, 2026 86% judged on-target in blind review

501Companies

8,629Contacts tracked

3,492Verified emails

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The 25 largest environmental engineering firms based in the United Kingdom

Ranked by team size

Top 25 of 501 environmental engineering firms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to environmental engineering 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	RSK Group	Strong evidence	Helsby, United KingdomHQ checked Sep 16, 2026	10001+	1,255 contacts →
	Strong evidence “RSK Group is a global leader in the delivery of environmental and engineering solutions.” Source: RevenueBase Database · checked Sep 16, 2026
2	Ricardo PLC	Indirect evidence	London, United KingdomHQ checked Sep 16, 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 16, 2026
3	Fairhurst	Indirect evidence	Glasgow, United KingdomHQ checked Sep 16, 2026	201-500	437 contacts →
	Indirect evidence “Welcome to Fairhurst: Fairhurst is a Limited Liability Partnership (LLP) of Consulting Engineers practicing in the UK, employing circa 400 staff in 16 principal offices.” Source: RevenueBase Database · checked Sep 16, 2026
4	Atelier TEN	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	323 contacts →
	Partial 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 16, 2026
5	The Erith Group	Partial evidence	London, United KingdomHQ checked Sep 16, 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 16, 2026
6	JURU	Strong evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	176 contacts →
	Strong 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 16, 2026
7	The Sirius Group	Partial evidence	Durham, United KingdomHQ checked Sep 16, 2026	201-500	156 contacts →
	Partial evidence “End to End Service: From initial investigations and assessments to planning, design and engineering support, we give you a foundation of confidence for your site development…” Source: RevenueBase Database · checked Sep 16, 2026
8	Aqua Consultants	Partial evidence	Leeds, United KingdomHQ checked Sep 16, 2026	51-200	156 contacts →
	Partial evidence “Aqua Consultants provide tailored environmental consultancy to broaden your thinking, lead transformation, and achieve successful outcomes.” Source: RevenueBase Database · checked Sep 16, 2026
9	Arthian LTD	Indirect evidence	Glasgow, United KingdomHQ checked Sep 16, 2026	201-500	153 contacts →
	Indirect evidence “Arthian has been established following a merger between Mabbett and IKM Consulting.” Source: RevenueBase Database · checked Sep 16, 2026
10	Mackley	Indirect evidence	Small Dole, United KingdomHQ checked Sep 16, 2026	51-200	116 contacts →
	Indirect evidence “Mackley provides a comprehensive range of services from conception through construction to project delivery.” Source: RevenueBase Database · checked Sep 16, 2026
11	Land Water	Indirect evidence	Guildford, United KingdomHQ checked Sep 16, 2026	201-500	109 contacts →
	Indirect evidence “Land + Water is more than just a dredging company.” Source: RevenueBase Database · checked Sep 16, 2026
12	Cura Terrae Land & Nature	Partial evidence	Sheffield, United KingdomHQ checked Sep 16, 2026	51-200	92 contacts →
	Partial 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 16, 2026
13	ERG AIR Pollution Control LTD	Strong evidence	Horsham, United KingdomHQ checked Sep 16, 2026	51-200	88 contacts →
	Strong evidence “ERG is a specialist environmental engineering contractor.” Source: RevenueBase Database · checked Sep 16, 2026
14	Vertasefli Limited	Partial evidence	Portishead, United KingdomHQ checked Sep 16, 2026	51-200	84 contacts →
	Partial evidence “VertaseFLI is a leading brownfield and contaminated land remediation contractor and environmental contracting specialist.” Source: RevenueBase Database · checked Sep 16, 2026
15	Rappor	Strong evidence	Cheltenham, United KingdomHQ checked Sep 16, 2026	51-200	75 contacts →
	Strong evidence “Rappor is an engineering and environmental consultancy working in partnership to steer sustainable development.” Source: RevenueBase Database · checked Sep 16, 2026
16	Envirocentre	Indirect evidence	Glasgow, United KingdomHQ checked Sep 16, 2026	51-200	71 contacts →
	Indirect evidence “EnviroCentre is a solutions orientated consultancy that has a proven track record in providing innovative, effective and valuable advice.” Source: RevenueBase Database · checked Sep 16, 2026
17	DSSR	Indirect evidence	Manchester, United KingdomHQ checked Sep 16, 2026	51-200	67 contacts →
	Indirect evidence “DSSR is a forward-thinking, award-winning company of Consulting Engineers specialising in all aspects of Building Services and Sustainability design.” Source: RevenueBase Database · checked Sep 16, 2026
18	HEXA	Indirect evidence	Nottingham, United KingdomHQ checked Sep 16, 2026	51-200	62 contacts →
	Indirect evidence “Welcome to Hexa.” Source: RevenueBase Database · checked Sep 16, 2026
19	RSP Consulting Engineers	Indirect evidence	Edinburgh, United KingdomHQ checked Sep 16, 2026	51-200	60 contacts →
	Indirect evidence “RSP Consulting Engineers LLP are leaders in sustainable and low energy building services design.” Source: RevenueBase Database · checked Sep 16, 2026
20	Waterco Datrys	Strong evidence	Ruthin, United KingdomHQ checked Sep 16, 2026	11-50	59 contacts →
	Strong evidence “Waterco Datrys is a leading consultancy in water and environmental engineering, formed through the merger of Waterco and Datrys in 2024.” Source: RevenueBase Database · checked Sep 16, 2026
21	Rolton	Partial evidence	Higham Ferrers, United KingdomHQ checked Sep 16, 2026	51-200	52 contacts →
	Partial evidence “Every Rolton project benefits from an ethos that matches innovation with sustainability, creating integrated designs that fulfil ever-evolving aesthetic and environmental…” Source: RevenueBase Database · checked Sep 16, 2026
22	Create Consulting Engineers	Strong evidence	Norwich, United KingdomHQ checked Sep 16, 2026	11-50	51 contacts →
	Strong evidence “Create is an award-winning, engineering and environmental consultancy.” Source: RevenueBase Database · checked Sep 16, 2026
23	Civic Engineers	Partial evidence	Manchester, United KingdomHQ checked Sep 16, 2026	51-200	50 contacts →
	Partial evidence “Civic Engineers believe in creating inspirational structures and places that have a positive impact on the environment and enable people to lead happier and healthier lives.” Source: RevenueBase Database · checked Sep 16, 2026
24	Cura Terrae	Indirect evidence	Sheffield, United KingdomHQ checked Sep 16, 2026	201-500	50 contacts →
	Indirect evidence “Our mission is to provide services and solutions to help take care of the Earth.” Source: RevenueBase Database · checked Sep 16, 2026
25	Mason Navarro Pledge LTD	Indirect evidence	Hitchin, United KingdomHQ checked Sep 16, 2026	51-200	50 contacts →
	Indirect evidence “Mason Navarro Pledge; consulting civil and structural engineers delivering new and refurbished buildings across every sector.” Source: RevenueBase Database · checked Sep 16, 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: environmental engineering 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 environmental engineering firms.
Partial evidence: Its own public description names part of environmental engineering firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental engineering 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 501 environmental engineering firms based in the United Kingdom

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Environmental engineering firms based in the United Kingdom at a glance

As of Sep 16, 2026

40.5%Verified-email coverage

17.2Average contacts per company

1-10Median size (employees)

12.0%Largest-city concentration · London

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

273

11-50

142

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 501 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 environmental engineering 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 “environmental engineering 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 environmental engineering 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 environmental engineering 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, 3,492 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 16, 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.

Environmental engineering firms by metro

Environmental engineering firms in London60

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 environmental engineering 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 environmental engineering firms are there based in the United Kingdom?

RevenueBase identified 501 environmental engineering 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?

RSK Group, headquartered in Helsby, tops this list with the largest team on record.

Which city has the most environmental engineering firms?

London leads with 60 headquartered companies, followed by Manchester (14) and Bristol (10).

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 3,492 verified decision-maker contacts tracked across these 501 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 16, 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.