Company lists · Data refreshed September 2026

Top 25 Ocean engineering firms based in the United Kingdom

Name: Ocean engineering firms based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 499 companies tracked

RevenueBase identified 499 company matches for ocean engineering firms associated with the United Kingdom as of September 2026 and tracks 19,990 professional contacts across them, including 6,146 with verified work emails. Aberdeen is the largest hub.

This list covers company matches for ocean engineering firms 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 17, 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 17, 2026 How this list was built

499Companies

19,990Contacts tracked

6,146Verified emails

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The 25 largest ocean engineering firms based in the United Kingdom

Ranked by team size

Top 25 of 499 company matches for ocean engineering firms based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 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	Altera Infrastructure	Exact match	Aberdeenshire, United KingdomHQ recorded Sep 17, 2026	501-1,000	955 contacts →
	Exact match “Altera Infrastructure is a leading global energy infrastructure services group focused on the ownership and operation of offshore energy assets.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	ABL	Exact match	London, United KingdomHQ recorded Sep 17, 2026	1,001-5,000	804 contacts →
	Exact match “The Energy and Marine Consultants - an Aqualis company.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	Dolphin Drilling	Exact match	Aberdeen, United KingdomHQ recorded Sep 17, 2026	201-500	694 contacts →
	Exact match “Dolphin Drilling is the offshore drilling pioneer of the past and for the future.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	Pd&ms Group	Exact match	Aberdeen, United KingdomHQ recorded Sep 17, 2026	501-1,000	653 contacts →
	Exact match “PD & MS Group has full multi-discipline in-house EPCC capability and is recognised as a provider of safe, effective, and cost efficient design and engineering services to onshore…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	Gardline Limited	Exact match	Great Yarmouth, United KingdomHQ recorded Sep 17, 2026	501-1,000	545 contacts →
	Exact match “Gardline is a best-in-class provider of geophysical, geotechnical and environmental marine surveys.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	Boskalis Subsea Services	Exact match	Aberdeen, United KingdomHQ recorded Sep 17, 2026	201-500	516 contacts →
	Exact match “Boskalis Subsea Services is a world-leading provider of specialist subsea solutions for the offshore energy industry, seamlessly integrating services to deliver optimum results.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	James Fisher And Sons PLC	Exact match	Barrow-in-furness, United KingdomHQ recorded Sep 17, 2026	1,001-5,000	403 contacts →
	Exact match “Above, below and beyond the world’s oceans.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	SMD	Exact match	Wallsend, United KingdomHQ recorded Sep 17, 2026	51-200	292 contacts →
	Exact match “SMD is an advanced global designer and manufacturer of subsea remotely operated and autonomous power and control solutions.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	2h Offshore	Exact match	Woking, United KingdomHQ recorded Sep 17, 2026	201-500	286 contacts →
	Exact match “2H Offshore delivers leading-edge advanced systems engineering for all types of offshore structures in the oil and gas and renewable energy sectors.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	Motive Offshore Group LTD	Exact match	Banff, United KingdomHQ recorded Sep 17, 2026	201-500	283 contacts →
	Exact match “Motive Offshore Group specialises in the design, manufacture, rental, and inspection of marine and lifting equipment.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	Claxton Engineering Services	Exact match	Great Yarmouth, United KingdomHQ recorded Sep 17, 2026	201-500	279 contacts →
	Exact match “Claxton, an AF Gruppen Company, combines decades of industry experience, proprietary technology, and exceptional service quality to cut through offshore installation and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	Ledwood Mechanical Engineering LTD	Exact match	Pembrokeshire, United KingdomHQ recorded Sep 17, 2026	501-1,000	266 contacts →
	Exact match “Ledwood is an independent engineering, fabrication and construction company specialising in the delivery of complex projects across the oil, gas, process and energy industries.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	Cyan Sentinel Limited	Exact match	Aberdeen, United KingdomHQ recorded Sep 17, 2026	51-200	249 contacts →
	Exact match “An International Shipowning and Marine Investment Company.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	TEXO	Exact match	Aberdeen, United KingdomHQ recorded Sep 17, 2026	51-200	222 contacts →
	Exact match “TEXO is a dynamic, UK-based industrial services provider that believes in meeting challenges head on.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	Acteon	Exact match	Norwich, United KingdomHQ recorded Sep 17, 2026	1,001-5,000	192 contacts →
	Exact match “Acteon delivers data-driven, engineering-led solutions across the lifecycle of offshore energy infrastructure.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	Wilton Engineering	Exact match	Middlesbrough, United KingdomHQ recorded Sep 17, 2026	201-500	188 contacts →
	Exact match “Wilton Engineering is a multi-disciplined Engineering Services provider based on a 113 acre site by the River Tees in Middlesbrough, North-East England.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	OSBIT	Exact match	Northumberland, United KingdomHQ recorded Sep 17, 2026	201-500	171 contacts →
	Exact match “Osbit’s vision is to unlock a clean energy future by creating smarter technology.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	Aquaterra Energy	Exact match	Norwich, United KingdomHQ recorded Sep 17, 2026	51-200	167 contacts →
	Exact match “Aquaterra Energy provides intelligently engineered products and services for well access and offshore developments - supporting efficient operations across the full life cycle of…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	Eastgate Engineering	Exact match	Thornaby-on-tees, United KingdomHQ recorded Sep 17, 2026	201-500	163 contacts →
	Exact match “Eastgate Engineering is an Electrical and Instrumentation contractor that delivers complex, high-risk infrastructure projects with cost certainty, without compromising safety or…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	Enshore Subsea	Exact match	Blyth, United KingdomHQ recorded Sep 17, 2026	51-200	161 contacts →
	Exact match “The globally trusted delivery experts in installing and protecting critical subsea infrastructure.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Ferguson Marine Port Glasgow Limited	Exact match	Port Glasgow, United KingdomHQ recorded Sep 17, 2026	201-500	156 contacts →
	Exact match “Ferguson Marine (Port Glasgow) Limited is Scotland's leading company in new build, refit and ship repair.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	Seatrium Offshore Renewable Services LTD	Exact match	Lowestoft, United KingdomHQ recorded Sep 17, 2026	n/a	155 contacts →
	Exact match “Seatrium Offshore Renewable Services Ltd (Seatrium ORS) has over 55 years of unparalleled expertise and experience in the offshore energy industry.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	Maritime Developments Limited	Exact match	Aberdeen, United KingdomHQ recorded Sep 17, 2026	51-200	148 contacts →
	Exact match “MDL - We Build Innovation.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Longitude Engineering	Exact match	London, United KingdomHQ recorded Sep 17, 2026	51-200	138 contacts →
	Exact match “The Engineering Consultants.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	Interocean Marine Services	Exact match	Portlethen, United KingdomHQ recorded Sep 17, 2026	51-200	134 contacts →
	Exact match “Interocean provide a comprehensive range of services to the offshore oil and gas, marine, and renewable sectors.” Recorded in the RevenueBase company graph · Sep 17, 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 “ocean engineering firms”. 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 499 ocean engineering firms based in the United Kingdom

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Ocean engineering firms based in the United Kingdom at a glance

As of Sep 17, 2026

30.7%Verified-email coverage

40.1Average contacts per company

1-10Median size (employees)

14.0%Largest-city concentration · Aberdeen

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

249

11-50

130

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 499 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 “ocean engineering firms” 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 6,146 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 17, 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 “ocean engineering firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many ocean engineering firms are there based in the United Kingdom?

RevenueBase identified 499 company matches for ocean engineering firms 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?

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

Which city has the most ocean engineering firms?

Aberdeen leads with 70 company records, followed by London (54) and Glasgow (10).

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 6,146 professional contacts with verified work emails tracked across these 499 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 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 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.