Company lists · Data refreshed September 2026

Top 25 Environmental foundations based in the United Kingdom

Name: Environmental foundations 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 335 companies tracked

RevenueBase identified 335 environmental foundations headquartered in the United Kingdom as of September 2026 and tracks 2,998 professional contacts across them, including 1,497 with verified work emails. London is the largest hub.

This list covers environmental foundations 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

335Companies

2,998Contacts tracked

1,497Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest environmental foundations based in the United Kingdom

Ranked by team size

Top 25 of 335 environmental foundations 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 foundations: 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 Biocensus	Indirect evidence	Helsby, United KingdomHQ checked Sep 19, 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 19, 2026
2	Eunomia Research & Consulting	Partial evidence	Bristol, United KingdomHQ checked Sep 19, 2026	51-200	143 contacts →
	Partial evidence “At Eunomia, we're social-environmental problem-solvers and researchers with a difference.” Source: RevenueBase Database · checked Sep 19, 2026
3	Thomson Environmental Consultants	Partial evidence	Guildford, United KingdomHQ checked Sep 19, 2026	51-200	133 contacts →
	Partial evidence “Thomson Environmental Consultants are experts in environmental compliance with offices in Guildford, Leeds, Cardiff, Birmingham and Manchester.” Source: RevenueBase Database · checked Sep 19, 2026
4	Middlemarch	Partial evidence	Coventry, United KingdomHQ checked Sep 19, 2026	51-200	118 contacts →
	Partial evidence “With a legacy of over 30 years, we are a UK leading independent consultancy specialising in the preservation of the natural environment.” Source: RevenueBase Database · checked Sep 19, 2026
5	Mrag LTD	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	103 contacts →
	Indirect evidence “Established in the UK in 1986, MRAG Ltd is a consultancy company dedicated to promoting sustainable use of aquatic resources through sound integrated management policies and…” Source: RevenueBase Database · checked Sep 19, 2026
6	Greengage Environmental LTD	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	93 contacts →
	Partial 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 19, 2026
7	CSA Environmental	Partial evidence	Ashwell, United KingdomHQ checked Sep 19, 2026	51-200	76 contacts →
	Partial evidence “CSA Environmental is a multidisciplinary environmental consultancy practice providing specialist advice covering Ecology, Heritage, Landscape, and Masterplanning and Urban Design.” Source: RevenueBase Database · checked Sep 19, 2026
8	Rammsanderson Ecology LTD	Indirect evidence	Beeston, United KingdomHQ checked Sep 19, 2026	51-200	74 contacts →
	Indirect evidence “RammSanderson Ecology Ltd is a specialist ecological consultancy based at offices in the East Midlands, West Midlands, Yorkshire, North West, South West and South East, offering…” Source: RevenueBase Database · checked Sep 19, 2026
9	BSG Ecology	Indirect evidence	Abingdon, United KingdomHQ checked Sep 19, 2026	51-200	73 contacts →
	Indirect evidence “BSG Ecology is an award-winning independent ecological consultancy.” Source: RevenueBase Database · checked Sep 19, 2026
10	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
11	Action Sustainability	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	62 contacts →
	Indirect evidence “Recognised for its commitment to employees with a sought-after Best Companies “One To Watch” industry standard, Action Sustainability offers a 3-in-1 solution through…” Source: RevenueBase Database · checked Sep 19, 2026
12	Fiverivers	Partial evidence	Codford, United KingdomHQ checked Sep 19, 2026	51-200	49 contacts →
	Partial evidence “FiveRivers is a leading industry specialist in the consultation, design and delivery of ecological and environmental solutions.” Source: RevenueBase Database · checked Sep 19, 2026
13	Bowland Ecology LTD	Indirect evidence	New, United KingdomHQ checked Sep 19, 2026	11-50	43 contacts →
	Indirect evidence “Bowland Ecology is an independent practice specialising in ecological consultancy.” Source: RevenueBase Database · checked Sep 19, 2026
14	Keystone Environmental LTD	Partial evidence	Tetbury, United KingdomHQ checked Sep 19, 2026	11-50	43 contacts →
	Partial evidence “Keystone Environmental is an ecological consultancy with a practical, intelligent and pioneering approach to advising its clients.” Source: RevenueBase Database · checked Sep 19, 2026
15	Ironside Farrar Limited	Partial evidence	Lothian, United KingdomHQ checked Sep 19, 2026	51-200	41 contacts →
	Partial evidence “Environmental Consultants.” Source: RevenueBase Database · checked Sep 19, 2026
16	Threeshires Limited	Indirect evidence	Scalford, United KingdomHQ checked Sep 19, 2026	51-200	40 contacts →
	Indirect evidence “We specialise in single point provision of Ecological Consultancy in parallel with the physical delivery by in-house staff of physical site works, ranging from phase one surveys…” Source: RevenueBase Database · checked Sep 19, 2026
17	Cbec Eco-Engineering UK & Europe	Partial evidence	Inverness, United KingdomHQ checked Sep 19, 2026	11-50	36 contacts →
	Partial evidence “CBEC eco-engineering is a leading UK environmental consultant specialising in the provision of eco-engineering solutions for the aquatic environment.” Source: RevenueBase Database · checked Sep 19, 2026
18	Waterman Environmental Services Limited	Partial evidence	Lichfield, United KingdomHQ checked Sep 19, 2026	51-200	36 contacts →
	Partial evidence “WATERMAN ENVIRONMENTAL SERVICES LIMITED is an environmental services company based out of AQUA HOUSE BRITANNIA ENTERPRISE PARK EUROPA WAY, LICHFIELD, United Kingdom.” Source: RevenueBase Database · checked Sep 19, 2026
19	MKA Ecology	Partial evidence	Cambridgeshire, United KingdomHQ checked Sep 19, 2026	11-50	34 contacts →
	Partial evidence “MKA Ecology is an environmental consultancy specialising in providing detailed ecological surveys.” Source: RevenueBase Database · checked Sep 19, 2026
20	Brooks Ecological LTD	Indirect evidence	Guiseley, United KingdomHQ checked Sep 19, 2026	11-50	33 contacts →
	Indirect evidence “Brooks Ecological Ltd is a well-established ecological consultancy located in Leeds.” Source: RevenueBase Database · checked Sep 19, 2026
21	Envance	Indirect evidence	Stockport, United KingdomHQ checked Sep 19, 2026	11-50	29 contacts →
	Indirect evidence “We believe that a better future for people and the planet doesn't have to be at the expense of success in the present.” Source: RevenueBase Database · checked Sep 19, 2026
22	Ethos Environmental Planning	Partial evidence	Bath, United KingdomHQ checked Sep 19, 2026	11-50	28 contacts →
	Partial evidence “Ethos is comprised of a specialist team of ecological, environmental and GIS consultants based in Bath, Somerset.” Source: RevenueBase Database · checked Sep 19, 2026
23	Avian Ecology LTD	Indirect evidence	Northwich, United KingdomHQ checked Sep 19, 2026	11-50	28 contacts →
	Indirect evidence “Avian Ecology is led by skilled ecologists who also understand business.” Source: RevenueBase Database · checked Sep 19, 2026
24	Ecosupport LTD	Indirect evidence	Lee-on-the-solent, United KingdomHQ checked Sep 19, 2026	11-50	27 contacts →
	Indirect evidence “Established in 2006 we are an independent ecological consultancy providing a cost effective and knowledgable service to a wide range of commercial and private clients across…” Source: RevenueBase Database · checked Sep 19, 2026
25	Aquatera LTD	Partial evidence	Stromness, United KingdomHQ checked Sep 19, 2026	11-50	26 contacts →
	Partial evidence “Operating globally from a hub in Orkney, off the north coast of Scotland, Aquatera provides environmental expertise and operational support for offshore, coastal and land-based…” 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 foundations. 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 foundations.
Partial evidence: Its own public description names part of environmental foundations, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental foundations. 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 335 environmental foundations based in the United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,497 reachable decision-makers.

Free signup · no credit card

View the full list →

Environmental foundations based in the United Kingdom at a glance

As of Sep 19, 2026

49.9%Verified-email coverage

8.9Average contacts per company

1-10Median size (employees)

15.2%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

240

11-50

51-200

201-500

1,001-5,000

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 335 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 foundations, 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 foundations”. 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 foundations), 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 foundations, 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, 1,497 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 foundations by metro

Environmental foundations in London51

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 foundations, 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 foundations are there based in the United Kingdom?

RevenueBase identified 335 environmental foundations 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 Biocensus, headquartered in Helsby, tops this list with the largest team on record.

Which city has the most environmental foundations?

London leads with 51 headquartered companies, followed by Oxford (7) and Bristol (6).

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 1,497 verified decision-maker contacts tracked across these 335 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.

Ready to reach these companies? Verified emails and direct dials for all 335 environmental foundations based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

Environmental foundations by geography

Browse the directory

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.