Company lists · Data refreshed September 2026

Top 25 Marine energy consultants based in the United Kingdom

RevenueBase identified 572 marine energy consultants headquartered in the United Kingdom as of September 2026 and tracks 11,581 professional contacts across them, including 4,220 with verified work emails. London is the largest hub.

This list covers marine energy 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 17, 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 17, 2026 86% judged on-target in blind review
572Companies
11,581Contacts tracked
4,220Verified emails
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The 25 largest marine energy consultants based in the United Kingdom

Ranked by team size
Top 25 of 572 marine energy consultants based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to marine energy 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Strong evidenceLondon, United KingdomHQ checked Sep 17, 20261,001-5,000804 contacts →

Strong evidence

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

Source: RevenueBase Database · checked Sep 17, 2026
2Partial evidenceGreat Yarmouth, United KingdomHQ checked Sep 17, 2026501-1,000545 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 17, 2026
3Strong evidenceCastle Douglas, United KingdomHQ checked Sep 17, 2026501-1,000500 contacts →

Strong evidence

“Natural Power is a leading independent consultancy and service provider for the renewable energy sector.”

Source: RevenueBase Database · checked Sep 17, 2026
4Indirect evidenceAberdeen, United KingdomHQ checked Sep 17, 2026201-500490 contacts →

Indirect evidence

“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…”

Source: RevenueBase Database · checked Sep 17, 2026
5Partial evidenceStockport, United KingdomHQ checked Sep 17, 202651-200418 contacts →

Partial evidence

“Fichtner is one of the world's leading independent engineering consultancy firms.”

Source: RevenueBase Database · checked Sep 17, 2026
6Indirect evidenceBarrow-in-furness, United KingdomHQ checked Sep 17, 20261,001-5,000403 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 17, 2026
7Partial evidenceWoking, United KingdomHQ checked Sep 17, 2026201-500286 contacts →

Partial evidence

“2H Offshore delivers leading-edge advanced systems engineering for all types of offshore structures in the oil and gas and renewable energy sectors.”

Source: RevenueBase Database · checked Sep 17, 2026
8Strong evidenceLondon, United KingdomHQ checked Sep 17, 202651-200185 contacts →

Strong evidence

“The Renewable Energy Consultants.”

Source: RevenueBase Database · checked Sep 17, 2026
9Strong evidenceLondon, United KingdomHQ checked Sep 17, 202651-200175 contacts →

Strong evidence

“Wood Thilsted is a world-leading renewable energy engineering consultancy experienced and specialised in offshore wind.”

Source: RevenueBase Database · checked Sep 17, 2026
10Strong evidenceManchester, United KingdomHQ checked Sep 17, 202651-200150 contacts →

Strong evidence

“TNEI is an independent specialist energy consultancy providing technical, strategic, environmental and consenting advice to organisations operating within the conventional and…”

Source: RevenueBase Database · checked Sep 17, 2026
11Partial evidenceLondon, United KingdomHQ checked Sep 17, 202651-200138 contacts →

Partial evidence

“The Engineering Consultants.”

Source: RevenueBase Database · checked Sep 17, 2026
12Partial evidencePortlethen, United KingdomHQ checked Sep 17, 202651-200134 contacts →

Partial evidence

“Interocean provide a comprehensive range of services to the offshore oil and gas, marine, and renewable sectors.”

Source: RevenueBase Database · checked Sep 17, 2026
13Strong evidenceAberdeen, United KingdomHQ checked Sep 17, 202651-200129 contacts →

Strong evidence

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

Source: RevenueBase Database · checked Sep 17, 2026
14Partial evidenceStokesley, United KingdomHQ checked Sep 17, 202651-200110 contacts →

Partial evidence

“We furnish all-round solutions, including engineering, procurement, and construction in the full value chain of offshore wind and adjacent marine construction activities.”

Source: RevenueBase Database · checked Sep 17, 2026
15Strong evidenceLondon, United KingdomHQ checked Sep 17, 202651-200106 contacts →

Strong evidence

“CTS Offshore & Marine Ltd is an independent provider of engineering services tailored for energy and material markets.”

Source: RevenueBase Database · checked Sep 17, 2026
16Partial evidenceBristol, United KingdomHQ checked Sep 17, 202651-200100 contacts →

Partial evidence

“Everoze is an employee-owned renewables, green hydrogen and storage consultancy.”

Source: RevenueBase Database · checked Sep 17, 2026
17Indirect evidenceLondon, United KingdomHQ checked Sep 17, 202651-20091 contacts →

Indirect evidence

“Sea.”

Source: RevenueBase Database · checked Sep 17, 2026
18Partial evidenceNorth Shields, United KingdomHQ checked Sep 17, 202651-20089 contacts →

Partial evidence

“We are a High Voltage Renewable Energy Engineering Company working on and offshore across the world.”

Source: RevenueBase Database · checked Sep 17, 2026
19Indirect evidenceBuckfastleigh, United KingdomHQ checked Sep 17, 202611-5084 contacts →

Indirect evidence

“Providing high quality strategic and project specific planning and environmental advice to the offshore development industries, we, GoBe, are specialists in offshore renewables…”

Source: RevenueBase Database · checked Sep 17, 2026
20Strong evidenceLondon, United KingdomHQ checked Sep 17, 202651-20084 contacts →

Strong evidence

“Waves Group combines the expertise of Cwaves and Mwaves as leading, independent marine consultants to the shipping and offshore energy industries.”

Source: RevenueBase Database · checked Sep 17, 2026
21Strong evidenceLiverpool, United KingdomHQ checked Sep 17, 202651-20080 contacts →

Strong evidence

“Founded in 1903, Brookes Bell is a leading multi-disciplinary technical and scientific consultancy serving the marine and energy sectors.”

Source: RevenueBase Database · checked Sep 17, 2026
22Indirect evidenceBiggar, United KingdomHQ checked Sep 17, 202651-20080 contacts →

Indirect evidence

“Green Cat Renewables is a dynamic, innovative, and growing company that provides tailored support to the needs of the individual developer throughout the entire development…”

Source: RevenueBase Database · checked Sep 17, 2026
23Strong evidenceGloucester, United KingdomHQ checked Sep 17, 202651-20076 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 17, 2026
24Partial evidenceGlasgow, United KingdomHQ checked Sep 17, 202651-20075 contacts →

Partial evidence

“We are committed to providing an exceptional end-to-end service within the marine sector.”

Source: RevenueBase Database · checked Sep 17, 2026
25Partial evidenceStromness, United KingdomHQ checked Sep 17, 202651-20069 contacts →

Partial evidence

“Established in 2003, EMEC is the world’s first and leading facility for demonstrating and testing wave and tidal energy converters – technologies that generate electricity by…”

Source: RevenueBase Database · checked Sep 17, 2026

Showing 25 of 572 marine energy consultants based in the United Kingdom

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Marine energy consultants based in the United Kingdom at a glance

As of Sep 17, 2026
36.4%Verified-email coverage
20.2Average contacts per company
1-10Median size (employees)
14.2%Largest-city concentration · London
Sep 17, 2026Page data refreshed

Companies by employee count

1-10
380
11-50
124
51-200
41
201-500
7
501-1,000
4
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 572 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 marine energy 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 “marine energy 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 marine energy 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 marine energy 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, 4,220 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 17, 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.

Marine energy consultants by metro

  • Marine energy consultants in London81
  • Marine energy consultants in Aberdeen37

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 marine energy 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 marine energy consultants are there based in the United Kingdom?

RevenueBase identified 572 marine energy 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?

ABL, headquartered in London, tops this list with the largest team on record.

Which city has the most marine energy consultants?

London leads with 81 headquartered companies, followed by Aberdeen (37) and Edinburgh (22).

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 4,220 verified decision-maker contacts tracked across these 572 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 17, 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.