Company lists · Data refreshed September 2026

Top 25 Conservation nonprofits based in the United Kingdom

Name: Conservation nonprofits 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 429 companies tracked

RevenueBase identified 429 company matches for conservation nonprofits associated with the United Kingdom as of September 2026 and tracks 10,264 professional contacts across them, including 4,295 with verified work emails. London is the largest hub.

This list covers company matches for conservation nonprofits associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 19, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 19, 2026 How this list was built

429Companies

10,264Contacts tracked

4,295Verified emails

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The 25 largest conservation nonprofits based in the United Kingdom

Ranked by team size

Top 25 of 429 company matches for conservation nonprofits based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Zoological Society Of London ZSL	Exact match	London, United KingdomHQ recorded Sep 19, 2026	1,001-5,000	937 contacts →
	Exact match “As the original science-driven conservation organisation, we’re working to restore wildlife in the UK and around the world.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2	Fauna & Flora	Exact match	Cambridge, United KingdomHQ recorded Sep 19, 2026	501-1,000	576 contacts →
	Exact match “Fauna & Flora's work spans across the globe, with over 100 projects in more than 40 countries.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3	Birdlife International	Exact match	Cambridge, United KingdomHQ recorded Sep 19, 2026	51-200	330 contacts →
	Exact match “We’re BirdLife International, the only global Partnership conserving birds and all life on our planet.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4	Clientearth	Exact match	London, United KingdomHQ recorded Sep 19, 2026	201-500	324 contacts →
	Exact match “We are a non-profit using the power of the law to bring about end-to-end systemic change: informing, implementing and enforcing the law, drafting and advising decision-makers on…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5	Blue Ventures	Exact match	London, United KingdomHQ recorded Sep 19, 2026	201-500	255 contacts →
	Exact match “We believe the power to restore our oceans lives in the coastal communities bearing witness to the planetary crises.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6	The Royal Zoological Society Of Scotland	Exact match	Edinburgh, United KingdomHQ recorded Sep 19, 2026	201-500	177 contacts →
	Exact match “We are the Royal Zoological Society for Scotland (RZSS), and for over 100 years we’ve been a leading conservation and education charity as well as an amazing, award-winning…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7	Greenpeace UK	Exact match	London, United KingdomHQ recorded Sep 19, 2026	51-200	167 contacts →
	Exact match “Greenpeace is an independent global campaigning network that acts to change attitudes and behaviour, to protect and conserve the environment and to promote peace.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8	Lancashire Wildlife Trust	Exact match	Bamber Bridge, United KingdomHQ recorded Sep 19, 2026	51-200	138 contacts →
	Exact match “We are part of the Wildlife Trusts movement, the UK's leading conservation charity dedicated to all wildlife.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9	Scottish Wildlife Trust	Exact match	Edinburgh, United KingdomHQ recorded Sep 19, 2026	51-200	128 contacts →
	Exact match “For 60 years, the Scottish Wildlife Trust has worked with its members, partners and supporters in pursuit of its vision of healthy, resilient ecosystems across Scotland’s land and…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10	Essex Wildlife Trust	Exact match	Colchester, United KingdomHQ recorded Sep 19, 2026	51-200	126 contacts →
	Exact match “We are the county’s leading conservation charity, committed to protecting wildlife and inspiring a lifelong love of nature.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11	London Wildlife Trust	Exact match	London, United KingdomHQ recorded Sep 19, 2026	51-200	124 contacts →
	Exact match “London Wildlife Trust champions nature’s recovery in London.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12	Middlemarch	Exact match	Coventry, United KingdomHQ recorded Sep 19, 2026	51-200	118 contacts →
	Exact match “With a legacy of over 30 years, we are a UK leading independent consultancy specialising in the preservation of the natural environment.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13	Hampshire & Isle Of Wight Wildlife Trust	Exact match	Curdridge, United KingdomHQ recorded Sep 19, 2026	51-200	116 contacts →
	Exact match “For over 60 years Hampshire & Isle of Wight Wildlife Trust have protected the wildlife and wild places of Hampshire, the Island and our local seas.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14	A Rocha International	Exact match	London, United KingdomHQ recorded Sep 19, 2026	201-500	107 contacts →
	Exact match “A Rocha is a global family of conservation organizations working together to live out God’s calling to care for creation and equip others to do likewise.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15	Berkshire, Buckinghamshire & Oxfordshire Wildlife Trust Bbowt	Exact match	Farmoor, United KingdomHQ recorded Sep 19, 2026	51-200	102 contacts →
	Exact match “BBOWT has a bold vision of a wilder Berkshire, Buckinghamshire and Oxfordshire, with more nature everywhere for everyone – in towns and rural areas.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16	Environmental Justice Foundation EJF	Exact match	London, United KingdomHQ recorded Sep 19, 2026	51-200	94 contacts →
	Exact match “The Environmental Justice Foundation (EJF) exists to protect the natural world and defend our basic human right to a secure environment.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17	Born Free Foundation	Exact match	Horsham, United KingdomHQ recorded Sep 19, 2026	11-50	94 contacts →
	Exact match “We work tirelessly to ensure that all wild animals, whether living in captivity or in the wild, are treated with compassion and respect.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18	Gloucestershire Wildlife Trust	Exact match	Gloucester, United KingdomHQ recorded Sep 19, 2026	51-200	81 contacts →
	Exact match “Gloucestershire Wildlife Trust was founded in 1961 by a group of volunteers, led by Sir Peter Scott, who recognised that local wildlife was under threat.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19	Cornwall Wildlife Trust	Exact match	Allet, United KingdomHQ recorded Sep 19, 2026	51-200	80 contacts →
	Exact match “Taking practical action to create a Cornwall where nature thrives.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20	Environmental Investigation Agency	Exact match	London, United KingdomHQ recorded Sep 19, 2026	51-200	77 contacts →
	Exact match “Environmental Investigation Agency UK is a UK charity, number 1182208.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21	Global Canopy	Exact match	Oxford, United KingdomHQ recorded Sep 19, 2026	51-200	74 contacts →
	Exact match “Global Canopy is a data-driven not for profit that targets the market forces destroying nature.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22	Ocean Conservation Trust	Exact match	Plymouth, United KingdomHQ recorded Sep 19, 2026	51-200	71 contacts →
	Exact match “Ocean Conservation with a difference.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23	The Rivers Trust	Exact match	Stoke Climsland, United KingdomHQ recorded Sep 19, 2026	51-200	68 contacts →
	Exact match “Rivers shape our landscapes and provide the foundations for our cities, towns and countryside.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24	Devon Wildlife Trust	Exact match	Exeter, United KingdomHQ recorded Sep 19, 2026	51-200	67 contacts →
	Exact match “Nature is in trouble and Devon Wildlife Trust’s mission stems from the need for urgent change and our belief that, if enough people care and act, we can bring nature back and do…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25	Sheffield & Rotherham Wildlife Trust	Exact match	Sheffield, United KingdomHQ recorded Sep 19, 2026	51-200	61 contacts →
	Exact match “For nature, for everyone.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “conservation nonprofits”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 429 conservation nonprofits based in the United Kingdom

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Conservation nonprofits based in the United Kingdom at a glance

As of Sep 19, 2026

41.8%Verified-email coverage

23.9Average contacts per company

1-10Median size (employees)

27.3%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

271

11-50

111

51-200

201-500

501-1,000

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 429 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with the United Kingdom whose business descriptions match “conservation nonprofits” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 4,295 professional contacts with verified work emails across the full matched dataset. 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.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “conservation nonprofits”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many conservation nonprofits are there based in the United Kingdom?

RevenueBase identified 429 company matches for conservation nonprofits associated with the United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Zoological Society Of London ZSL tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most conservation nonprofits?

London leads with 117 company records, followed by Cambridge (11) and Oxford (10).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 4,295 professional contacts with verified work emails tracked across these 429 companies; direct dials are available where recorded.

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 SmartSearch, 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.