Company lists · Data refreshed September 2026
Top 25 Zoos organizations based in the United Kingdom
RevenueBase identified 780 zoos organizations headquartered in the United Kingdom as of September 2026 and tracks 17,716 professional contacts across them, including 6,155 with verified work emails. London is the largest hub.
This list covers zoos organizations 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.
The 25 largest zoos organizations based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,027 contacts → | ||||
Indirect evidence “We’re here for every kind, through rescue and rehab, advocacy, education and prevention.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 2 | 937 contacts → | ||||
Indirect evidence “As the original science-driven conservation organisation, we’re working to restore wildlife in the UK and around the world.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 3 | 625 contacts → | ||||
Indirect evidence “Chester Zoo is a major wildlife charity that’s working to prevent extinction all around the world.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 4 | 576 contacts → | ||||
Indirect evidence “Fauna & Flora's work spans across the globe, with over 100 projects in more than 40 countries.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 5 | 531 contacts → | ||||
Indirect evidence “Battersea is here for every dog and cat, and has been since 1860.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 6 | 330 contacts → | ||||
Indirect evidence “We’re BirdLife International, the only global Partnership conserving birds and all life on our planet.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 7 | 276 contacts → | ||||
Indirect evidence “At World Animal Protection, we are a global organisation dedicated to ending the exploitation of animals.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 8 | 220 contacts → | ||||
Indirect evidence “Since 1966, Longleat has been home to a menagerie of exciting animals; in both the Safari Drive-Through and Walking Safari.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 9 | 195 contacts → | ||||
Indirect evidence “The British Trust for Ornithology (BTO) is the UK’s leading bird research organisation harnessing the skills and enthusiasm of over volunteers to monitor UK birds.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 10 | 177 contacts → | ||||
Indirect evidence “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…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 11 | 171 contacts → | ||||
Indirect evidence “Howletts Wild Animal Park and Port Lympne Hotel & Reserve, are Kent’s award winning wild animal parks, working in conjunction with the world leading conservation charity, The…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 12 | 169 contacts → | ||||
Indirect evidence “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.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 13 | 157 contacts → | ||||
Indirect evidence “Marwell Wildlife is a world-renowned, action-oriented conservation charity, leading projects to conserve species and habitats both in Hampshire and around the world.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 14 | 149 contacts → | ||||
Indirect evidence “Yorkshire Wildlife Trust is a local charity working to protect and conserve Yorkshire's wild places and wildlife for all to enjoy.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 15 | 138 contacts → | ||||
Indirect evidence “We are part of the Wildlife Trusts movement, the UK's leading conservation charity dedicated to all wildlife.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 16 | 135 contacts → | ||||
Indirect evidence “Operation Wallacea is a series of biological and social science expedition projects that operate in remote locations across the world.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 17 | 133 contacts → | ||||
Indirect evidence “West Midlands Safari Park is home to some of the world's most beautiful and critically endangered species, with a 4-mile Safari Drive, walk-through Discovery Trail, African…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 18 | 128 contacts → | ||||
Indirect evidence “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…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 19 | 126 contacts → | ||||
Indirect evidence “We are the county’s leading conservation charity, committed to protecting wildlife and inspiring a lifelong love of nature.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 20 | 125 contacts → | ||||
Indirect evidence “Established for over 60 years, Twycross Zoo looks after over hundred animals of 150 species – many of whom are endangered.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 21 | 124 contacts → | ||||
Indirect evidence “London Wildlife Trust champions nature’s recovery in London.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 22 | 117 contacts → | ||||
Indirect evidence “The leading UK conservation charity conducting scientific research and developing sympathetic ways of managing the countryside for the benefit of Britain's game and wildlife.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 23 | 116 contacts → | ||||
Indirect evidence “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.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 24 | 107 contacts → | ||||
Indirect evidence “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.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 25 | 104 contacts → | ||||
Indirect evidence “Bristol Zoological Society is a conservation and education charity which owns and operates Bristol Zoo Project.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
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: zoos organizations. 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 zoos organizations.
- Partial evidence
- Its own public description names part of zoos organizations, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name zoos organizations. 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 780 zoos organizations based in the United Kingdom
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Zoos organizations based in the United Kingdom at a glance
As of Sep 16, 2026Companies by employee count
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 780 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 zoos organizations, 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 “zoos organizations”. 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 zoos organizations), 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 zoos organizations, 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, 6,155 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.
Zoos organizations by metro
- Zoos organizations in London136
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 zoos organizations, 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 zoos organizations are there based in the United Kingdom?
RevenueBase identified 780 zoos organizations 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?
RSPCA, headquartered in Horsham, tops this list with the largest team on record.
Which city has the most zoos organizations?
London leads with 136 headquartered companies, followed by Bristol (15) and Cambridge (14).
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 6,155 verified decision-maker contacts tracked across these 780 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.
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