Company lists · Data refreshed September 2026

Top 25 Biodiversity conservation organizations based in the United Kingdom

Name: Biodiversity conservation organizations 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 157 companies tracked

RevenueBase identified 157 company matches for biodiversity conservation organizations associated with the United Kingdom as of September 2026 and tracks 6,211 professional contacts across them, including 2,506 with verified work emails. London is the largest hub.

This list covers company matches for biodiversity conservation organizations 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

157Companies

6,211Contacts tracked

2,506Verified emails

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The 25 largest biodiversity conservation organizations based in the United Kingdom

Ranked by team size

Top 25 of 157 company matches for biodiversity conservation organizations 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	Traffic	Exact match	Cambridge, United KingdomHQ recorded Sep 19, 2026	51-200	169 contacts →
	Exact match “TRAFFIC is a leading non-governmental organisation working globally to ensure that trade in wild species is legal and sustainable, for the benefit of the planet and people.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5	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
6	Operation Wallacea	Exact match	Lincolnshire, United KingdomHQ recorded Sep 19, 2026	11-50	135 contacts →
	Exact match “Operation Wallacea is a series of biological and social science expedition projects that operate in remote locations across the world.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7	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
8	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
9	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
10	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
11	Arcos Network Page	Exact match	Cambridge, United KingdomHQ recorded Sep 19, 2026	51-200	87 contacts →
	Exact match “The Albertine Rift Conservation Society (ARCOS Network) is a regional conservation organization with the mission to enhance biodiversity conservation and sustainable management of…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12	The Biodiversity Consultancy LTD	Exact match	Cambridge, United KingdomHQ recorded Sep 19, 2026	51-200	79 contacts →
	Exact match “The Biodiversity Consultancy exists to make positive biodiversity impact second nature for business.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13	World Land Trust	Exact match	Halesworth, United KingdomHQ recorded Sep 19, 2026	11-50	53 contacts →
	Exact match “We’re WLT, an International Conservation Charity funding partner organisations around the world since 1989.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14	Wild Planet Trust	Exact match	Paignton, United KingdomHQ recorded Sep 19, 2026	n/a	52 contacts →
	Exact match “Wild Planet Trust is a registered education, scientific, and conservation charity dedicated to protecting endangered species and plants.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15	Ecosulis	Exact match	London, United KingdomHQ recorded Sep 19, 2026	11-50	48 contacts →
	Exact match “Ecosulis specialises in biodiversity assessment, habitat creation, reintroducing and protecting species, and land management.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16	Synchronicity Earth	Exact match	London, United KingdomHQ recorded Sep 19, 2026	11-50	43 contacts →
	Exact match “Synchronicity Earth is a UK-registered conservation charity and trust-based philanthropic funder working to address overlooked and underfunded conservation challenges for globally…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17	Conservation Careers	Exact match	Oundle, United KingdomHQ recorded Sep 19, 2026	n/a	37 contacts →
	Exact match “We believe that great conservation is done by great conservationists, and that wildlife deserves strong organizations employing the best staff to help protect it.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18	HCV Network	Exact match	Oxford, United KingdomHQ recorded Sep 19, 2026	11-50	36 contacts →
	Exact match “Farms, forests and plantations provide people with food, ecosystem services and products like timber, paper and fuel.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19	Wilderness Foundation UK	Exact match	Chatham Green, United KingdomHQ recorded Sep 19, 2026	11-50	35 contacts →
	Exact match “The Wilderness Foundation is a socio environmental charity founded in 1976 by the international conservationist Dr Ian Player DMS, renowned for saving the white rhino, and the…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20	People's Trust For Endangered Species	Exact match	London, United KingdomHQ recorded Sep 19, 2026	11-50	33 contacts →
	Exact match “PTES is a conservation charity, working to protect animals and their habitats in the UK as well as supporting conservation work overseas.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21	Mossy Earth	Exact match	London, United KingdomHQ recorded Sep 19, 2026	11-50	23 contacts →
	Exact match “Mossy Earth partners with environmentally conscious businesses to restore nature across a wide range of ecosystems through rewilding initiatives.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22	Wildlife And Countryside Link	Exact match	London, United KingdomHQ recorded Sep 19, 2026	11-50	20 contacts →
	Exact match “Wildlife and Countryside Link (Link) is the largest environment and wildlife coalition in England, bringing together 89 organisations to use their strong joint voice for the…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23	Conservation Optimism	Exact match	Oxford, United KingdomHQ recorded Sep 19, 2026	1-10	19 contacts →
	Exact match “Conservation Optimism supports, empowers and enables conservationists around the globe, professional and amateur, by sharing hope and building capacity and community.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24	E3 Ecology	Exact match	Hexham, United KingdomHQ recorded Sep 19, 2026	11-50	19 contacts →
	Exact match “E3 Ecology Ltd.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25	Integrated Biodiversity Assessment Tool Ibat	Exact match	Cambridge, United KingdomHQ recorded Sep 19, 2026	11-50	17 contacts →
	Exact match “At IBAT we provide commercial access to the world's most authoritative biodiversity data for reliable, web-based mapping, analysis, and reporting to help you assess risk…” 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 “biodiversity conservation organizations”. 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 157 biodiversity conservation organizations based in the United Kingdom

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Biodiversity conservation organizations based in the United Kingdom at a glance

As of Sep 19, 2026

40.3%Verified-email coverage

39.6Average contacts per company

1-10Median size (employees)

27.4%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

101

11-50

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 157 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 “biodiversity conservation organizations” 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 2,506 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 “biodiversity conservation organizations”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many biodiversity conservation organizations are there based in the United Kingdom?

RevenueBase identified 157 company matches for biodiversity conservation organizations 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 biodiversity conservation organizations?

London leads with 43 company records, followed by Cambridge (12) and Oxford (6).

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 2,506 professional contacts with verified work emails tracked across these 157 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.