Company lists · Data refreshed September 2026

Top 25 Offshore wind installation contractors based in the United Kingdom

Name: Offshore wind installation contractors 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 311 companies tracked

RevenueBase identified 311 company matches for offshore wind installation contractors associated with 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 company matches for offshore wind installation contractors 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

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 company matches for offshore wind installation contractors 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	GEV Wind Power	Exact match	Hull, United KingdomHQ recorded Sep 17, 2026	501-1,000	440 contacts →
	Exact match “GEV Wind Power is the global leading wind turbine maintenance & repair specialist.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	Boston Energy	Exact match	Hessle, United KingdomHQ recorded Sep 17, 2026	51-200	391 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	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
4	Aurora Energy Services	Exact match	Inverness, United KingdomHQ recorded Sep 17, 2026	201-500	253 contacts →
	Exact match “Aurora Energy Services is an international, multi-disciplinary company delivering integrated solutions across the full energy asset lifecycles.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	Seah Wind	Exact match	Middlesbrough, United KingdomHQ recorded Sep 17, 2026	201-500	206 contacts →
	Exact match “Offshore Monopiles” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	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
7	OWC	Exact match	London, United KingdomHQ recorded Sep 17, 2026	51-200	185 contacts →
	Exact match “The Renewable Energy Consultants.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	Wood Thilsted	Exact match	London, United KingdomHQ recorded Sep 17, 2026	51-200	175 contacts →
	Exact match “Wood Thilsted is a world-leading renewable energy engineering consultancy experienced and specialised in offshore wind.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	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
10	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
11	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
12	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
13	Flotation Energy	Exact match	Edinburgh, United KingdomHQ recorded Sep 17, 2026	51-200	154 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	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
15	Njord Offshore LTD	Exact match	Tendring, United KingdomHQ recorded Sep 17, 2026	11-50	137 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	Imca International Marine Contractors Association	Exact match	London, United KingdomHQ recorded Sep 17, 2026	11-50	134 contacts →
	Exact match “The International Marine Contractors Association (IMCA) is the global business association for construction and engineering companies working in offshore energy - both wind and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	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
18	Windhoist	Exact match	Glasgow, United KingdomHQ recorded Sep 17, 2026	201-500	130 contacts →
	Exact match “Windhoist is a leading wind turbine installation contractor offering heavy cranage, mechanical and electrical services to principal wind turbine suppliers in the global market.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	Seajacks	Exact match	Great Yarmouth, United KingdomHQ recorded Sep 17, 2026	201-500	122 contacts →
	Exact match “Please follow @Cadeler for more updates.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	RTS Wind UK	Exact match	Middlesbrough, United KingdomHQ recorded Sep 17, 2026	51-200	119 contacts →
	Exact match “RTS Wind Limited specialise in the provision of services to the onshore and offshore renewable energy sector.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	MPI Offshore	Exact match	Stokesley, United KingdomHQ recorded Sep 17, 2026	51-200	110 contacts →
	Exact match “We furnish all-round solutions, including engineering, procurement, and construction in the full value chain of offshore wind and adjacent marine construction activities.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	Stowen	Exact match	Great Yarmouth, United KingdomHQ recorded Sep 17, 2026	51-200	99 contacts →
	Exact match “Offering global technical services to the Renewable Energy, Oil & Gas and Marine sectors, on offshore and onshore customer assets and locations.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	Ventus Energy	Exact match	North Shields, United KingdomHQ recorded Sep 17, 2026	51-200	89 contacts →
	Exact match “We are a High Voltage Renewable Energy Engineering Company working on and offshore across the world.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Andrews Survey	Exact match	Aberdeen, United KingdomHQ recorded Sep 17, 2026	51-200	88 contacts →
	Exact match “Andrews Survey is predominantly active in construction and trenching support, ROV pipeline inspection support, renewable energy and wind-farm installation support and rig…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	Foundocean	Exact match	Livingston, United KingdomHQ recorded Sep 17, 2026	51-200	85 contacts →
	Exact match “FoundOcean boasts 60 years’ experience of providing green and brown field services to the marine construction industries.” 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 “offshore wind installation contractors”. 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 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

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 311 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 “offshore wind installation contractors” 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 3,301 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 “offshore wind installation contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 311 company matches for offshore wind installation contractors 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?

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

Which city has the most offshore wind installation contractors?

London leads with 38 company records, 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 limited free results with 500 credits to start. Upgrading provides access to the 3,301 professional contacts with verified work emails tracked across these 311 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.