Company lists · Data refreshed September 2026

Top 25 Environmental contracting companies based in the United Kingdom

Name: Environmental contracting companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 495 companies tracked

RevenueBase identified 495 environmental contracting companies headquartered in the United Kingdom as of September 2026 and tracks 7,539 professional contacts across them, including 2,523 with verified work emails. London is the largest hub.

This list covers environmental contracting companies 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 19, 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 19, 2026 86% judged on-target in blind review

495Companies

7,539Contacts tracked

2,523Verified emails

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The 25 largest environmental contracting companies based in the United Kingdom

Ranked by team size

Top 25 of 495 environmental contracting companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to environmental contracting 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	RSK Group	Partial evidence	Helsby, United KingdomHQ checked Sep 19, 2026	10001+	1,255 contacts →
	Partial evidence “RSK Group is a global leader in the delivery of environmental and engineering solutions.” Source: RevenueBase Database · checked Sep 19, 2026
2	Adler And Allan	Partial evidence	Harrogate, United KingdomHQ checked Sep 19, 2026	501-1,000	398 contacts →
	Partial evidence “Adler and Allan provides environmental and energy infrastructure services to reduce the risk of pollution, operational downtime, profit loss and reputation damage.” Source: RevenueBase Database · checked Sep 19, 2026
3	Augean	Indirect evidence	Wetherby, United KingdomHQ checked Sep 19, 2026	501-1,000	264 contacts →
	Indirect evidence “Augean specialises in managing hard to handle wastes.” Source: RevenueBase Database · checked Sep 19, 2026
4	Hydro Cleansing	Partial evidence	Croydon, United KingdomHQ checked Sep 19, 2026	201-500	254 contacts →
	Partial evidence “Founded in we are one of London’s and Southeast's leading providers of environmental and waste management services.” Source: RevenueBase Database · checked Sep 19, 2026
5	The Erith Group	Partial evidence	London, United KingdomHQ checked Sep 19, 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 19, 2026
6	John F Hunt Group	Indirect evidence	Grays, United KingdomHQ checked Sep 19, 2026	501-1,000	181 contacts →
	Indirect evidence “John F Hunt is a diverse group of 21 companies & divisions operating across the UK.” Source: RevenueBase Database · checked Sep 19, 2026
7	Lucion	Indirect evidence	Gateshead, United KingdomHQ checked Sep 19, 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 19, 2026
8	Bulloughs Cleaning Services Limited	Indirect evidence	Skipton, United KingdomHQ checked Sep 19, 2026	1,001-5,000	136 contacts →
	Indirect evidence “Providing quality cleaning solutions for over 55 years We are proud to be one of the largest independent cleaning companies in the North of England with an ever-growing…” Source: RevenueBase Database · checked Sep 19, 2026
9	Ecologia	Indirect evidence	Sittingbourne, United KingdomHQ checked Sep 19, 2026	51-200	128 contacts →
	Indirect evidence “Ecologia is a multidisciplinary service provider within the contaminated land sector, offering remediation works, site investigation including geotechnical assessment and waste…” Source: RevenueBase Database · checked Sep 19, 2026
10	Collard Group LTD	Indirect evidence	Eversley, United KingdomHQ checked Sep 19, 2026	201-500	125 contacts →
	Indirect evidence “Collard Group is one of the UK’s leading demolition contractors and one of the largest privately owned waste management companies in the south of England.” Source: RevenueBase Database · checked Sep 19, 2026
11	Future Industrial Services Limited	Indirect evidence	Liverpool, United KingdomHQ checked Sep 19, 2026	201-500	98 contacts →
	Indirect evidence “Future Industrial Services Limited has since offered a range of Waste Management and specialised Industrial Services to meet the requirement of Government Agencies, Local…” Source: RevenueBase Database · checked Sep 19, 2026
12	ERG AIR Pollution Control LTD	Partial evidence	Horsham, United KingdomHQ checked Sep 19, 2026	51-200	88 contacts →
	Partial evidence “ERG is a specialist environmental engineering contractor.” Source: RevenueBase Database · checked Sep 19, 2026
13	Vertasefli Limited	Strong evidence	Portishead, United KingdomHQ checked Sep 19, 2026	51-200	84 contacts →
	Strong evidence “VertaseFLI is a leading brownfield and contaminated land remediation contractor and environmental contracting specialist.” Source: RevenueBase Database · checked Sep 19, 2026
14	The MSS Group	Partial evidence	Cardiff, United KingdomHQ checked Sep 19, 2026	501-1,000	76 contacts →
	Partial evidence “The MSS Group is a specialist provider of facilities, industrial and environmental services with expertise in hazardous, highly regulated and complex environments.” Source: RevenueBase Database · checked Sep 19, 2026
15	Envirocentre	Indirect evidence	Glasgow, United KingdomHQ checked Sep 19, 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 19, 2026
16	Mantank Environmental Services LTD	Partial evidence	Little Hulton, United KingdomHQ checked Sep 19, 2026	11-50	68 contacts →
	Partial evidence “Mantank Environmental Services was established in 1995 to provide a wide range of high quality industrial cleaning solutions to both large and small companies in the chemical and…” Source: RevenueBase Database · checked Sep 19, 2026
17	Mcauliffe Group	Indirect evidence	Wolverhampton, United KingdomHQ checked Sep 19, 2026	51-200	66 contacts →
	Indirect evidence “Established over 50 years ago, McAuliffe is a Specialist Remediation Contractor providing Soil & Groundwater Remediation, Materials Management, Ground Improvement & Demolition…” Source: RevenueBase Database · checked Sep 19, 2026
18	Ohes Environmental Consultancy	Partial evidence	Wokingham, United KingdomHQ checked Sep 19, 2026	51-200	66 contacts →
	Partial evidence “OHES is a multi-disciplinary environmental consultancy operating from sites right across the UK and the Republic of Ireland.” Source: RevenueBase Database · checked Sep 19, 2026
19	Glanville Environmental	Partial evidence	Ivybridge, United KingdomHQ checked Sep 19, 2026	201-500	64 contacts →
	Partial evidence “Glanville Environmental help commercial infrastructure owners reduce pollution and flood risk by inspecting and maintaining ageing drainage systems and installing new…” Source: RevenueBase Database · checked Sep 19, 2026
20	Seed Environmental Limited	Strong evidence	Kentford, United KingdomHQ checked Sep 19, 2026	51-200	59 contacts →
	Strong evidence “Seed Environmental is a national multi-disciplinary incident response and remediation contracting company providing a targeted range of services to the selected domestic…” Source: RevenueBase Database · checked Sep 19, 2026
21	KPH Group	Partial evidence	Caterham, United KingdomHQ checked Sep 19, 2026	11-50	57 contacts →
	Partial evidence “We are a specialist contractor providing a unique range of deconstruction, environmental and decommissioning services based on experience, innovation and a commitment to customer…” Source: RevenueBase Database · checked Sep 19, 2026
22	KDC Veolia Decommissioning	Indirect evidence	Bolton, United KingdomHQ checked Sep 19, 2026	51-200	54 contacts →
	Indirect evidence “Founded in 1990 and acquired by Veolia in 2018, KDC Veolia has established itself as a leading specialist in end-of-asset-life solutions, providing comprehensive decommissioning…” Source: RevenueBase Database · checked Sep 19, 2026
23	Waste Experts Certified B Corp	Partial evidence	Huddersfield, United KingdomHQ checked Sep 19, 2026	51-200	50 contacts →
	Partial evidence “Waste Experts are one of the UK’s most forward-thinking environmental services specialists and a proud Certified B Corporation™.” Source: RevenueBase Database · checked Sep 19, 2026
24	Enviraz Scotland LTD	Partial evidence	Glasgow, United KingdomHQ checked Sep 19, 2026	51-200	50 contacts →
	Partial evidence “Established in 1975, we provide an extensive range of environmental services to an impressively diverse portfolio of clients across all sectors and industries, including Local…” Source: RevenueBase Database · checked Sep 19, 2026
25	Cognition Land And Water Limited	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	50 contacts →
	Indirect evidence “Cognition is a Tier 2 multidisciplinary contractor equipped for it all, from routine works to major infrastructure projects.” Source: RevenueBase Database · checked Sep 19, 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 contracting 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 environmental contracting companies.
Partial evidence: Its own public description names part of environmental contracting companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental contracting 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 495 environmental contracting companies based in the United Kingdom

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Environmental contracting companies based in the United Kingdom at a glance

As of Sep 19, 2026

33.5%Verified-email coverage

15.2Average contacts per company

11-50Median size (employees)

7.9%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

239

11-50

155

51-200

201-500

501-1,000

1,001-5,000

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 495 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 contracting 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 the United Kingdom whose own description of what they do matches “environmental contracting 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 environmental contracting 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 environmental contracting companies, 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, 2,523 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 19, 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 contracting companies by metro

Environmental contracting companies in London39

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 contracting companies, 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 contracting companies are there based in the United Kingdom?

RevenueBase identified 495 environmental contracting companies 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 contracting companies?

London leads with 39 headquartered companies, followed by Manchester (13) and Bristol (9).

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 2,523 verified decision-maker contacts tracked across these 495 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 19, 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.