Company lists · Data refreshed September 2026

Top 25 Offshore wind installation contractors based in the United Kingdom

RevenueBase identified 311 offshore wind installation contractors headquartered in the United Kingdom as of September 2026 and tracks 10,658 professional contacts across them, including 3,301 with verified work emails. London is the largest hub.

This list covers offshore wind installation contractors 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
311Companies
10,658Contacts tracked
3,301Verified emails
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The 25 largest offshore wind installation contractors based in the United Kingdom

Ranked by team size
Top 25 of 311 offshore wind installation contractors 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 offshore wind installation contractors: 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
1Partial evidenceHull, United KingdomHQ checked Sep 17, 2026501-1,000440 contacts →

Partial evidence

“GEV Wind Power is the global leading wind turbine maintenance & repair specialist.”

Source: RevenueBase Database · checked Sep 17, 2026
2Strong evidenceHessle, United KingdomHQ checked Sep 17, 202651-200391 contacts →

Strong evidence

“Boston Energy is a specialist delivery partner to the offshore wind industry, supporting OEMs, Developers, Tier 1 contractors and vessel owners across the full wind farm lifecycle.”

Source: RevenueBase Database · checked Sep 17, 2026
3Partial 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
4Indirect evidenceInverness, United KingdomHQ checked Sep 17, 2026201-500253 contacts →

Indirect evidence

“Aurora Energy Services is an international, multi-disciplinary company delivering integrated solutions across the full energy asset lifecycles.”

Source: RevenueBase Database · checked Sep 17, 2026
5Partial evidenceMiddlesbrough, United KingdomHQ checked Sep 17, 2026201-500206 contacts →

Partial evidence

Offshore Monopiles”

Source: RevenueBase Database · checked Sep 17, 2026
6Partial evidenceNorwich, United KingdomHQ checked Sep 17, 20261,001-5,000192 contacts →

Partial evidence

“Acteon delivers data-driven, engineering-led solutions across the lifecycle of offshore energy infrastructure.”

Source: RevenueBase Database · checked Sep 17, 2026
7Indirect evidenceLondon, United KingdomHQ checked Sep 17, 202651-200185 contacts →

Indirect evidence

“The Renewable Energy Consultants.”

Source: RevenueBase Database · checked Sep 17, 2026
8Strong 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
9Indirect evidenceNorthumberland, United KingdomHQ checked Sep 17, 2026201-500171 contacts →

Indirect evidence

“Osbit’s vision is to unlock a clean energy future by creating smarter technology.”

Source: RevenueBase Database · checked Sep 17, 2026
10Partial evidenceThornaby-on-tees, United KingdomHQ checked Sep 17, 2026201-500163 contacts →

Partial evidence

“Eastgate Engineering is an Electrical and Instrumentation contractor that delivers complex, high-risk infrastructure projects with cost certainty, without compromising safety or…”

Source: RevenueBase Database · checked Sep 17, 2026
11Indirect evidenceBlyth, United KingdomHQ checked Sep 17, 202651-200161 contacts →

Indirect evidence

“The globally trusted delivery experts in installing and protecting critical subsea infrastructure.”

Source: RevenueBase Database · checked Sep 17, 2026
12Partial evidenceLowestoft, United KingdomHQ checked Sep 17, 2026n/a155 contacts →

Partial evidence

“Seatrium Offshore Renewable Services Ltd (Seatrium ORS) has over 55 years of unparalleled expertise and experience in the offshore energy industry.”

Source: RevenueBase Database · checked Sep 17, 2026
13Strong evidenceEdinburgh, United KingdomHQ checked Sep 17, 202651-200154 contacts →

Strong evidence

“Flotation Energy Ltd delivers clean, green, renewable energy by using our expertise in floating and fixed offshore wind and the energy transition, supporting achievement of…”

Source: RevenueBase Database · checked Sep 17, 2026
14Indirect evidenceLondon, United KingdomHQ checked Sep 17, 202651-200138 contacts →

Indirect evidence

“The Engineering Consultants.”

Source: RevenueBase Database · checked Sep 17, 2026
15Indirect evidenceTendring, United KingdomHQ checked Sep 17, 202611-50137 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 17, 2026
16Strong evidenceLondon, United KingdomHQ checked Sep 17, 202611-50134 contacts →

Strong evidence

“The International Marine Contractors Association (IMCA) is the global business association for construction and engineering companies working in offshore energy - both wind and…”

Source: RevenueBase Database · checked Sep 17, 2026
17Partial 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
18Strong evidenceGlasgow, United KingdomHQ checked Sep 17, 2026201-500130 contacts →

Strong evidence

“Windhoist is a leading wind turbine installation contractor offering heavy cranage, mechanical and electrical services to principal wind turbine suppliers in the global market.”

Source: RevenueBase Database · checked Sep 17, 2026
19Indirect evidenceGreat Yarmouth, United KingdomHQ checked Sep 17, 2026201-500122 contacts →

Indirect evidence

“Please follow @Cadeler for more updates.”

Source: RevenueBase Database · checked Sep 17, 2026
20Strong evidenceMiddlesbrough, United KingdomHQ checked Sep 17, 202651-200119 contacts →

Strong evidence

“RTS Wind Limited specialise in the provision of services to the onshore and offshore renewable energy sector.”

Source: RevenueBase Database · checked Sep 17, 2026
21Strong evidenceStokesley, United KingdomHQ checked Sep 17, 202651-200110 contacts →

Strong 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
22Partial evidenceGreat Yarmouth, United KingdomHQ checked Sep 17, 202651-20099 contacts →

Partial evidence

“Offering global technical services to the Renewable Energy, Oil & Gas and Marine sectors, on offshore and onshore customer assets and locations.”

Source: RevenueBase Database · checked Sep 17, 2026
23Partial 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
24Strong evidenceAberdeen, United KingdomHQ checked Sep 17, 202651-20088 contacts →

Strong evidence

“Andrews Survey is predominantly active in construction and trenching support, ROV pipeline inspection support, renewable energy and wind-farm installation support and rig…”

Source: RevenueBase Database · checked Sep 17, 2026
25Indirect evidenceLivingston, United KingdomHQ checked Sep 17, 202651-20085 contacts →

Indirect evidence

“FoundOcean boasts 60 years’ experience of providing green and brown field services to the marine construction industries.”

Source: RevenueBase Database · checked Sep 17, 2026

Showing 25 of 311 offshore wind installation contractors based in the United Kingdom

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Offshore wind installation contractors based in the United Kingdom at a glance

As of Sep 17, 2026
31.0%Verified-email coverage
34.3Average contacts per company
11-50Median size (employees)
12.2%Largest-city concentration · London
Sep 17, 2026Page data refreshed

Companies by employee count

1-10
134
11-50
98
51-200
49
201-500
18
501-1,000
5
1,001-5,000
5

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 311 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 offshore wind installation contractors, 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 “offshore wind installation contractors”. 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 offshore wind installation contractors), 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 offshore wind installation contractors, 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, 3,301 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.

Offshore wind installation contractors by metro

  • Offshore wind installation contractors in London38

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 offshore wind installation contractors, 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 offshore wind installation contractors are there based in the United Kingdom?

RevenueBase identified 311 offshore wind installation contractors 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?

GEV Wind Power, headquartered in Hull, tops this list with the largest team on record.

Which city has the most offshore wind installation contractors?

London leads with 38 headquartered companies, followed by Aberdeen (22) and Edinburgh (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 3,301 verified decision-maker contacts tracked across these 311 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.