Company lists · Data refreshed September 2026

Top 25 Aquatic environmental consultants based in the United Kingdom

Name: Aquatic environmental consultants 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 420 companies tracked

RevenueBase identified 420 aquatic environmental consultants headquartered in the United Kingdom as of September 2026 and tracks 5,933 professional contacts across them, including 2,708 with verified work emails. London is the largest hub.

This list covers aquatic environmental consultants 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

420Companies

5,933Contacts tracked

2,708Verified emails

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The 25 largest aquatic environmental consultants based in the United Kingdom

Ranked by team size

Top 25 of 420 aquatic environmental consultants 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 aquatic environmental consultants: 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	CEFAS	Strong evidence	Lowestoft, United KingdomHQ checked Sep 19, 2026	501-1,000	559 contacts →
	Strong evidence “Cefas (Centre for Environment, Fisheries and Aquaculture Science) is an internationally renowned aquatic scientific research and consultancy centre.” Source: RevenueBase Database · checked Sep 19, 2026
2	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
3	RSK Biocensus	Partial evidence	Helsby, United KingdomHQ checked Sep 19, 2026	201-500	164 contacts →
	Partial 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
4	Aqua Consultants	Strong evidence	Leeds, United KingdomHQ checked Sep 19, 2026	51-200	156 contacts →
	Strong evidence “Aqua Consultants provide tailored environmental consultancy to broaden your thinking, lead transformation, and achieve successful outcomes.” Source: RevenueBase Database · checked Sep 19, 2026
5	Thomson Environmental Consultants	Strong evidence	Guildford, United KingdomHQ checked Sep 19, 2026	51-200	133 contacts →
	Strong 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
6	Yordas Group	Indirect evidence	Lancaster, United KingdomHQ checked Sep 19, 2026	51-200	112 contacts →
	Indirect evidence “In 2026, Yordas Group was acquired by 3E, the leading global provider of expert-led AI compliance solutions for chemical and workplace safety, product stewardship, and sustainable…” Source: RevenueBase Database · checked Sep 19, 2026
7	Mrag LTD	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	103 contacts →
	Strong 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
8	Cura Terrae Land & Nature	Partial evidence	Sheffield, United KingdomHQ checked Sep 19, 2026	51-200	92 contacts →
	Partial evidence “Our multidisciplinary teams work together to combine their expertise in ecology, the historic environment, environmental impact assessment, landscape architecture, habitat…” Source: RevenueBase Database · checked Sep 19, 2026
9	Lanpro	Strong evidence	Norwich, United KingdomHQ checked Sep 19, 2026	51-200	87 contacts →
	Strong evidence “We are planning-led multi-disciplinary environmental consultants.” Source: RevenueBase Database · checked Sep 19, 2026
10	Ecology Solutions	Strong evidence	Broadway, United KingdomHQ checked Sep 19, 2026	11-50	85 contacts →
	Strong evidence “Ecology Solutions is a leading multidisciplinary environmental consultancy, specialising in ecology, archaeology and heritage, landscape design, mitigation and biodiversity.” Source: RevenueBase Database · checked Sep 19, 2026
11	CSA Environmental	Strong evidence	Ashwell, United KingdomHQ checked Sep 19, 2026	51-200	76 contacts →
	Strong 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
12	Ocean Ecology LTD	Strong evidence	Gloucester, United KingdomHQ checked Sep 19, 2026	51-200	76 contacts →
	Strong evidence “Ocean Ecology Limited is a leading marine environmental consultancy specialising in providing survey, technical, data and advisory services to organisations delivering and…” Source: RevenueBase Database · checked Sep 19, 2026
13	Atmos Consulting LTD	Strong evidence	Edinburgh, United KingdomHQ checked Sep 19, 2026	51-200	75 contacts →
	Strong evidence “Atmos Consulting is a modern and dynamic environmental and planning consultancy uniquely structured to offer superior service to its clients by providing cost-effective, robust…” Source: RevenueBase Database · checked Sep 19, 2026
14	Rammsanderson Ecology LTD	Partial evidence	Beeston, United KingdomHQ checked Sep 19, 2026	51-200	74 contacts →
	Partial 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
15	BSG Ecology	Partial evidence	Abingdon, United KingdomHQ checked Sep 19, 2026	51-200	73 contacts →
	Partial evidence “BSG Ecology is an award-winning independent ecological consultancy.” Source: RevenueBase Database · checked Sep 19, 2026
16	Envirocentre	Partial evidence	Glasgow, United KingdomHQ checked Sep 19, 2026	51-200	71 contacts →
	Partial 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
17	Abpmer	Strong evidence	Southampton, United KingdomHQ checked Sep 19, 2026	51-200	69 contacts →
	Strong evidence “ABPmer is a leading UK marine consultancy, creating sustainable solutions for clients in the marine environment.” Source: RevenueBase Database · checked Sep 19, 2026
18	Brindle & Green Environmental Consultants	Indirect evidence	Radbourne, United KingdomHQ checked Sep 19, 2026	51-200	64 contacts →
	Indirect evidence “Over the last decade, Brindle & Green has worked tirelessly to create a business that strives for technical excellence alongside being recognised for creating a culture for our…” Source: RevenueBase Database · checked Sep 19, 2026
19	Waterco Datrys	Strong evidence	Ruthin, United KingdomHQ checked Sep 19, 2026	11-50	59 contacts →
	Strong evidence “Waterco Datrys is a leading consultancy in water and environmental engineering, formed through the merger of Waterco and Datrys in 2024.” Source: RevenueBase Database · checked Sep 19, 2026
20	Cura Terrae	Indirect evidence	Sheffield, United KingdomHQ checked Sep 19, 2026	201-500	50 contacts →
	Indirect evidence “Our mission is to provide services and solutions to help take care of the Earth.” Source: RevenueBase Database · checked Sep 19, 2026
21	Benthic Solutions Limited	Strong evidence	Hoveton, United KingdomHQ checked Sep 19, 2026	11-50	49 contacts →
	Strong evidence “Benthic Solutions Limited (BSL) is an independent marine environmental consultancy and survey company offering a broad range of capabilities in survey, analytical, interpretative…” Source: RevenueBase Database · checked Sep 19, 2026
22	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
23	Hidef Aerial Surveying Limited	Partial evidence	Workington, United KingdomHQ checked Sep 19, 2026	51-200	48 contacts →
	Partial evidence “HiDef & BioConsult SH are innovative, solutions-driven, survey and consultancy providers, with HiDef being the UK’s market leader in high-resolution digital aerial offshore…” Source: RevenueBase Database · checked Sep 19, 2026
24	NEO Environmental LTD	Strong evidence	Glasgow, United KingdomHQ checked Sep 19, 2026	11-50	45 contacts →
	Strong evidence “Neo Environmental Ltd is a multidisciplinary consultancy that provide cost effective environmental and technical services to the commercial energy, property, aggregates and…” Source: RevenueBase Database · checked Sep 19, 2026
25	Bowland Ecology LTD	Partial evidence	New, United KingdomHQ checked Sep 19, 2026	11-50	43 contacts →
	Partial evidence “Bowland Ecology is an independent practice specialising in ecological consultancy.” 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: aquatic environmental consultants. 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 aquatic environmental consultants.
Partial evidence: Its own public description names part of aquatic environmental consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name aquatic environmental consultants. 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 420 aquatic environmental consultants based in the United Kingdom

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Aquatic environmental consultants based in the United Kingdom at a glance

As of Sep 19, 2026

45.6%Verified-email coverage

14.1Average contacts per company

1-10Median size (employees)

6.7%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

278

11-50

100

51-200

201-500

501-1,000

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 420 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 aquatic environmental consultants, 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 “aquatic environmental consultants”. 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 aquatic environmental consultants), 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 aquatic environmental consultants, 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, 2,708 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.

Aquatic environmental consultants by metro

Aquatic environmental consultants in London28

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 aquatic environmental consultants, 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 aquatic environmental consultants are there based in the United Kingdom?

RevenueBase identified 420 aquatic environmental consultants 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?

CEFAS, headquartered in Lowestoft, tops this list with the largest team on record.

Which city has the most aquatic environmental consultants?

London leads with 28 headquartered companies, followed by Edinburgh (8) and Exeter (7).

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 2,708 verified decision-maker contacts tracked across these 420 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.