Company lists · Data refreshed September 2026

Top 25 Marine environmental consultancies based in the United Kingdom

RevenueBase identified 1,298 company matches for marine environmental consultancies associated with the United Kingdom as of September 2026 and tracks 20,668 professional contacts across them, including 7,695 with verified work emails. London is the largest hub.

This list covers company matches for marine environmental consultancies 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 14, 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 14, 2026 How this list was built
1,298Companies
20,668Contacts tracked
7,695Verified emails
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The 25 largest marine environmental consultancies based in the United Kingdom

Ranked by team size
Top 25 of 1,298 company matches for marine environmental consultancies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 14, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchSt. Katharine Docks, United KingdomHQ recorded Sep 14, 20261,001-5,0001,343 contacts →

Exact match

“Clarksons is at the heart of maritime global shipping.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Sep 14, 20261,001-5,000804 contacts →

Exact match

“The Energy and Marine Consultants - an Aqualis company.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Sep 14, 2026n/a681 contacts →

Exact match

“SDSD - Supporting Maritime Professionals since 1983 Software innovation to the Maritime industry for more than 30 years.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
4Exact matchLowestoft, United KingdomHQ recorded Sep 14, 2026501-1,000559 contacts →

Exact match

“Cefas (Centre for Environment, Fisheries and Aquaculture Science) is an internationally renowned aquatic scientific research and consultancy centre.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
5Exact matchGreat Yarmouth, United KingdomHQ recorded Sep 14, 2026501-1,000545 contacts →

Exact match

“Gardline is a best-in-class provider of geophysical, geotechnical and environmental marine surveys.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
6Exact matchAberdeen, United KingdomHQ recorded Sep 14, 2026201-500490 contacts →

Exact match

“UTEC, Acteon’s Geo-services business line, harnesses data to optimise designs, save time and maximise your project’s economic value by providing a holistic understanding of the…”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
7Exact matchBarrow-in-furness, United KingdomHQ recorded Sep 14, 20261,001-5,000403 contacts →

Exact match

“Above, below and beyond the world’s oceans.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
8Exact matchBurntisland, United KingdomHQ recorded Sep 14, 2026501-1,000387 contacts →

Exact match

“Briggs Marine is a leading provider of marine and environmental services, specialising in port and marine operations, subsea and environmental support and vessel charter.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Sep 14, 2026501-1,000217 contacts →

Exact match

“Supported by a network of specialist consulting engineers, environmentalists and our own collective experience, our philosophy is simple: to provide a qualitative economic and…”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
10Exact matchLondon, United KingdomHQ recorded Sep 14, 2026201-500206 contacts →

Exact match

“ONE PARTNER.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
11Exact matchHelsby, United KingdomHQ recorded Sep 14, 2026201-500164 contacts →

Exact match

“RSK Biocensus is an ecological consultancy with a presence across the country and an extensive network of ecologists throughout the UK.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
12Exact matchLeeds, United KingdomHQ recorded Sep 14, 202651-200156 contacts →

Exact match

“Aqua Consultants provide tailored environmental consultancy to broaden your thinking, lead transformation, and achieve successful outcomes.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
13Exact matchGlasgow, United KingdomHQ recorded Sep 14, 2026201-500155 contacts →

Exact match

“SeaTec provides a comprehensive range of services and products to meet the needs of the shipping, offshore and defence industries.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Sep 14, 202651-200138 contacts →

Exact match

“The Engineering Consultants.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
15Exact matchGuildford, United KingdomHQ recorded Sep 14, 202651-200133 contacts →

Exact match

“Thomson Environmental Consultants are experts in environmental compliance with offices in Guildford, Leeds, Cardiff, Birmingham and Manchester.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
16Exact matchAberdeen, United KingdomHQ recorded Sep 14, 202651-200129 contacts →

Exact match

“Apollo is a leading engineering and advisory consultancy working across sustainable infrastructure, marine energies, oil and gas, technical placements and digital solutions.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Sep 14, 202651-200128 contacts →

Exact match

“Drewry is a leading international provider of research and consulting services to the maritime and shipping industry.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
18Exact matchCoventry, United KingdomHQ recorded Sep 14, 202651-200118 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 14, 2026 · View company records in RevenueBase
19Exact matchGlasgow, United KingdomHQ recorded Sep 14, 202611-50118 contacts →

Exact match

“Clyde Marine Recruitment is a leading provider of marine recruitment and bespoke crew management services across Europe and Asia Pacific.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
20Exact matchLancaster, United KingdomHQ recorded Sep 14, 202651-200112 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
21Exact matchDover, United KingdomHQ recorded Sep 14, 202651-200111 contacts →

Exact match

“VIKING MARITIME GROUP is a British company with over 35 years experience, and is made up of the following 3 businesses: VIKING CREW - The leading Cruise, Superyacht, Specialist…”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
22Exact matchBirkenhead, United KingdomHQ recorded Sep 14, 202651-200103 contacts →

Exact match

“Star International specialises in keeping vessels safe and compliant.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
23Exact matchLondon, United KingdomHQ recorded Sep 14, 202611-50103 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
24Exact matchAberdeenshire, United KingdomHQ recorded Sep 14, 202651-20094 contacts →

Exact match

“Based in Aberdeen, Axis is an independent consultancy providing specialist Exploration and Production, Decommissioning and Low Carbon expertise to the global energy industry and…”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
25Exact matchSheffield, United KingdomHQ recorded Sep 14, 202651-20092 contacts →

Exact match

“Our multidisciplinary teams work together to combine their expertise in ecology, the historic environment, environmental impact assessment, landscape architecture, habitat…”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase

Showing 25 of 1,298 marine environmental consultancies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 7,695 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Marine environmental consultancies based in the United Kingdom at a glance

As of Sep 14, 2026
37.2%Verified-email coverage
15.9Average contacts per company
1-10Median size (employees)
12.7%Largest-city concentration · London
Sep 14, 2026Page data refreshed

Companies by employee count

1-10
876
11-50
289
51-200
80
201-500
20
501-1,000
9
1,001-5,000
8

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 1,298 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 “marine environmental consultancies” 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 7,695 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 14, 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 “marine environmental consultancies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many marine environmental consultancies are there based in the United Kingdom?

RevenueBase identified 1,298 company matches for marine environmental consultancies 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?

Clarksons tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most marine environmental consultancies?

London leads with 165 company records, followed by Southampton (48) and Aberdeen (41).

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 7,695 professional contacts with verified work emails tracked across these 1,298 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 14, 2026.

Ready to reach these companies? Verified emails and direct dials for all 1,298 marine environmental consultancies based in the United Kingdom. Start with a free account, no credit card.

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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.