Company lists · Data refreshed September 2026

Top 25 Offshore oil and gas companies based in the United Kingdom

RevenueBase identified 147 company matches for offshore oil and gas companies associated with the United Kingdom as of September 2026 and tracks 23,052 professional contacts across them, including 3,005 with verified work emails. London is the largest hub.

This list covers company matches for offshore oil and gas companies 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 15, 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 15, 2026 How this list was built
147Companies
23,052Contacts tracked
3,005Verified emails
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The 25 largest offshore oil and gas companies based in the United Kingdom

Ranked by team size
Top 25 of 147 company matches for offshore oil and gas companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 15, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Sep 15, 20265,001-10,0002,679 contacts →

Exact match

“We Are Valaris With decades of expertise and strategic commitment built on efficiency, capability and ingenuity, our sights are continually set toward a future built with purpose…”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
2Exact matchAberdeen, United KingdomHQ recorded Sep 15, 20261,001-5,0001,864 contacts →

Exact match

“Odfjell Drilling is an international drilling company with around 1,500 employees with operations around the world.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Sep 15, 20261,001-5,0001,699 contacts →

Exact match

“Borr Drilling Limited is an offshore shallow-water drilling contractor providing worldwide offshore drilling services to the oil and gas industry.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Sep 15, 20261,001-5,0001,211 contacts →

Exact match

“HUNTING is an energy services provider to the world's leading national and international oil and gas companies, manufacturing and distributing products that enable the extraction…”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
5Exact matchAberdeenshire, United KingdomHQ recorded Sep 15, 2026501-1,000955 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 15, 2026 · View company records in RevenueBase
6Exact matchEdinburgh, United KingdomHQ recorded Sep 15, 2026201-500927 contacts →

Exact match

“Cairn Energy PLC ('Cairn') is one of Europe's leading independent oil and gas exploration and production companies and is listed on the London Stock Exchange.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
7Exact matchAberdeen, United KingdomHQ recorded Sep 15, 2026201-500694 contacts →

Exact match

“Dolphin Drilling is the offshore drilling pioneer of the past and for the future.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Sep 15, 2026201-500655 contacts →

Exact match

“Assala Energy is an oil exploration and production company.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Sep 15, 2026501-1,000587 contacts →

Exact match

“Established in 2007, Energean is a London-listed FTSE 250 and Tel Aviv-listed TA-90 E&P company with operations in the Europe, Middle East and Africa (“EMEA”) region.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
10Exact matchLondon, United KingdomHQ recorded Sep 15, 2026n/a314 contacts →

Exact match

“Northern Petroleum is an oil and gas exploration and production company quoted on the AIM Market of the London Stock Exchange.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
11Exact matchAberdeen, United KingdomHQ recorded Sep 15, 202651-200249 contacts →

Exact match

“An International Shipowning and Marine Investment Company.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
12Exact matchAberdeen, United KingdomHQ recorded Sep 15, 2026501-1,000202 contacts →

Exact match

“Swire Energy Services, part of the global conglomerate, the Swire group, is the world's largest supplier of specialist offshore cargo carrying units to the global energy industry…”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
13Exact matchNorwich, United KingdomHQ recorded Sep 15, 202651-200167 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 15, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Sep 15, 202611-50134 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 15, 2026 · View company records in RevenueBase
15Exact matchPortlethen, United KingdomHQ recorded Sep 15, 202651-200134 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 15, 2026 · View company records in RevenueBase
16Exact matchGreat Yarmouth, United KingdomHQ recorded Sep 15, 202651-200111 contacts →

Exact match

“Derrick Service UK Ltd (DSL) is a diversified oil & gas construction company which provides a broad range of products and services to the market from our Worldwide locations.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
17Exact matchAberdeen, United KingdomHQ recorded Sep 15, 202651-20088 contacts →

Exact match

“Awilco Drilling Limited was incorporated in December 2009 in connection with the acquisition of the two semi submersible drilling rigs, WilPhoenix (previously Arctic II) and…”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
18Exact matchAberdeen, United KingdomHQ recorded Sep 15, 202651-20055 contacts →

Exact match

“First Marine Solutions is a leading international energy service and equipment organisation with operations worldwide, We provide expertise, technology, techniques and support…”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
19Exact matchScarborough, United KingdomHQ recorded Sep 15, 202611-5055 contacts →

Exact match

“Mainprize Offshore Limited (formally Mainprize Trawling Co Ltd) was formed in 1979 and has operated in the North Sea for over thirty years.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
20Exact matchSouthampton, United KingdomHQ recorded Sep 15, 202611-5050 contacts →

Exact match

“Crondall Energy is an independent offshore energy consultancy specialising in floating and subsea facilities.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
21Exact matchWesthill, United KingdomHQ recorded Sep 15, 202651-20037 contacts →

Exact match

“Seatronics is now part of Ashtead Technology.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Sep 15, 202611-5030 contacts →

Exact match

“Our global organic talent allows us to deliver specialized knowledge and solutions for offshore operations to our clients around the world.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
23Exact matchHunmanby Filey, United KingdomHQ recorded Sep 15, 2026201-50013 contacts →

Exact match

“Specialist Marine Consultants (SMC), an OEG Group company is a global leader in providing Marine Coordination services to the renewable energy sector, as well as Statutory…”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
24Exact matchLondon, United KingdomHQ recorded Sep 15, 202611-5013 contacts →

Exact match

“PETROXIN is an international upstream oil and gas company providing technical expertise and cost-effective full life-cycle integrated solutions to global clients of operators and…”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
25Exact matchLondon, United KingdomHQ recorded Sep 15, 202611-5012 contacts →

Exact match

“Europa Oil & Gas (Holdings) plc is an AIM quoted UK, Ireland and West Africa focused oil and gas exploration, development and production company.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase

Showing 25 of 147 offshore oil and gas companies based in the United Kingdom

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Offshore oil and gas companies based in the United Kingdom at a glance

As of Sep 15, 2026
13.0%Verified-email coverage
156.8Average contacts per company
11-50Median size (employees)
32.0%Largest-city concentration · London
Sep 15, 2026Page data refreshed

Companies by employee count

1-10
61
11-50
36
51-200
17
201-500
14
501-1,000
8
1,001-5,000
6
5,001-10,000
1
10001+
2

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 147 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 oil and gas companies” 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 3,005 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 15, 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 oil and gas companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many offshore oil and gas companies are there based in the United Kingdom?

RevenueBase identified 147 company matches for offshore oil and gas companies 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?

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

Which city has the most offshore oil and gas companies?

London leads with 47 company records, followed by Aberdeen (20) and Westhill (3).

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 3,005 professional contacts with verified work emails tracked across these 147 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 15, 2026.

Ready to reach these companies? Verified emails and direct dials for all 147 offshore oil and gas companies based in the United Kingdom. Start with a free account, no credit card.

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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.