Company lists · Data refreshed September 2026

Top 25 Renewable energy offshore developers based in the United Kingdom

Name: Renewable energy offshore developers 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 438 companies tracked

RevenueBase identified 438 company matches for renewable energy offshore developers associated with the United Kingdom as of September 2026 and tracks 28,448 professional contacts across them, including 10,421 with verified work emails. London is the largest hub.

This list covers company matches for renewable energy offshore developers 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

438Companies

28,448Contacts tracked

10,421Verified emails

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The 25 largest renewable energy offshore developers based in the United Kingdom

Ranked by team size

Top 25 of 438 company matches for renewable energy offshore developers 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	Subsea7	Exact match	London, United KingdomHQ recorded Sep 17, 2026	10001+	12,645 contacts →
	Exact match “Subsea7 makes offshore energy transition possible through the continuous evolution of lower-carbon oil and gas and by enabling the growth of renewables and emerging energy.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	SSE Renewables	Exact match	Perth, United KingdomHQ recorded Sep 17, 2026	1,001-5,000	1,900 contacts →
	Exact match “SSE Renewables is a leading developer and operator of renewable energy generation, headquartered in the UK and Ireland, with a growing presence internationally.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	Lightsource BP	Exact match	London, United KingdomHQ recorded Sep 17, 2026	1,001-5,000	1,114 contacts →
	Exact match “Lightsource bp is working to support a future powered by renewable, affordable and reliable energy that benefits our partners, people and planet.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	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
5	Natural Power	Exact match	Castle Douglas, United KingdomHQ recorded Sep 17, 2026	501-1,000	500 contacts →
	Exact match “Natural Power is a leading independent consultancy and service provider for the renewable energy sector.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	Cubico Sustainable Investments	Exact match	London, United KingdomHQ recorded Sep 17, 2026	501-1,000	406 contacts →
	Exact match “Cubico Sustainable Investments is one of the world’s largest privately-owned renewable energy companies, leveraging our strong local presence with a unique combination of in-house…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	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
8	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
9	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
10	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
11	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
12	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
13	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
14	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
15	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
16	British Solar Renewables	Exact match	Shepton Mallet, United KingdomHQ recorded Sep 17, 2026	51-200	148 contacts →
	Exact match “Clean energy, powered with purpose.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	EPI Group	Exact match	Fleet, United KingdomHQ recorded Sep 17, 2026	11-50	144 contacts →
	Exact match “EPI Group is a leading provider of specialist geoscience, QHSE, environmental and technical services for the energy industry worldwide.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	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
19	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
20	Apollo	Exact match	Aberdeen, United KingdomHQ recorded Sep 17, 2026	51-200	129 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 17, 2026 · View company records in RevenueBase
21	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
22	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
23	EDF Renewables UK & Ireland	Exact match	London, United KingdomHQ recorded Sep 17, 2026	501-1,000	117 contacts →
	Exact match “EDF Renewables is part of one of the world’s leading renewable energy companies in the UK.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	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
25	Global Energy Group	Exact match	Inverness, United KingdomHQ recorded Sep 17, 2026	1,001-5,000	101 contacts →
	Exact match “Founded in 2005, Global Energy Group is a leading service and contracting company.” 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 “renewable energy offshore developers”. 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 438 renewable energy offshore developers based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 10,421 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Renewable energy offshore developers based in the United Kingdom at a glance

As of Sep 17, 2026

36.6%Verified-email coverage

64.9Average contacts per company

11-50Median size (employees)

16.0%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

210

11-50

139

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 438 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 “renewable energy offshore developers” 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 10,421 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.

Renewable energy offshore developers by metro

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 “renewable energy offshore developers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many renewable energy offshore developers are there based in the United Kingdom?

RevenueBase identified 438 company matches for renewable energy offshore developers 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?

Subsea7 tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most renewable energy offshore developers?

London leads with 70 company records, followed by Edinburgh (29) and Aberdeen (25).

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 10,421 professional contacts with verified work emails tracked across these 438 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.