Company lists · Data refreshed September 2026

Top 23 Oilfield companies based in the United Kingdom

Name: Oilfield companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 516 companies tracked

RevenueBase identified 516 oilfield companies headquartered in the United Kingdom as of September 2026 and tracks 30,633 professional contacts across them, including 6,135 with verified work emails. Aberdeen is the largest hub.

This list covers oilfield companies 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 21, 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 21, 2026 86% judged on-target in blind review

516Companies

30,633Contacts tracked

6,135Verified emails

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The 23 largest oilfield companies based in the United Kingdom

Ranked by team size

Top 23 of 516 oilfield companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to oilfield companies: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Ensco PLC	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	5,001-10,000	2,679 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 21, 2026
2	Harbour Energy	Indirect evidence	Victoria, United KingdomHQ checked Sep 21, 2026	1,001-5,000	2,216 contacts →
	Indirect evidence “The largest independent oil and gas company listed on the London Stock Exchange.” Source: RevenueBase Database · checked Sep 21, 2026
3	Odfjell Drilling	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 21, 2026	1,001-5,000	1,864 contacts →
	Indirect evidence “Odfjell Drilling is an international drilling company with around 1,500 employees with operations around the world.” Source: RevenueBase Database · checked Sep 21, 2026
4	Borr Drilling	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	1,001-5,000	1,699 contacts →
	Indirect evidence “Borr Drilling Limited is an offshore shallow-water drilling contractor providing worldwide offshore drilling services to the oil and gas industry.” Source: RevenueBase Database · checked Sep 21, 2026
5	Hunting	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	1,001-5,000	1,211 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 21, 2026
6	Altera Infrastructure	Indirect evidence	Aberdeenshire, United KingdomHQ checked Sep 21, 2026	501-1,000	955 contacts →
	Indirect evidence “Altera Infrastructure is a leading global energy infrastructure services group focused on the ownership and operation of offshore energy assets.” Source: RevenueBase Database · checked Sep 21, 2026
7	Dolphin Drilling	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 21, 2026	201-500	694 contacts →
	Indirect evidence “Dolphin Drilling is the offshore drilling pioneer of the past and for the future.” Source: RevenueBase Database · checked Sep 21, 2026
8	Delta Corporation	Indirect evidence	Usa, United KingdomHQ checked Sep 21, 2026	501-1,000	665 contacts →
	Indirect evidence “Delta Corporation specializes in the design and manufacture of API-compliant wellhead equipment and pressure control systems for both onshore and offshore oil and gas operations.” Source: RevenueBase Database · checked Sep 21, 2026
9	Assala Energy	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	201-500	655 contacts →
	Indirect evidence “Assala Energy is an oil exploration and production company.” Source: RevenueBase Database · checked Sep 21, 2026
10	Energean	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	501-1,000	587 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 21, 2026
11	Ashtead Technology	Indirect evidence	Westhill, United KingdomHQ checked Sep 21, 2026	501-1,000	368 contacts →
	Indirect evidence “Established in 1985, Ashtead Technology has grown organically and through strategic acquisition to become the leading provider of equipment rental solutions, advanced underwater…” Source: RevenueBase Database · checked Sep 21, 2026
12	Northern Petroleum PLC	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	n/a	314 contacts →
	Indirect evidence “Northern Petroleum is an oil and gas exploration and production company quoted on the AIM Market of the London Stock Exchange.” Source: RevenueBase Database · checked Sep 21, 2026
13	Claxton Engineering Services	Indirect evidence	Great Yarmouth, United KingdomHQ checked Sep 21, 2026	201-500	279 contacts →
	Indirect evidence “Claxton, an AF Gruppen Company, combines decades of industry experience, proprietary technology, and exceptional service quality to cut through offshore installation and…” Source: RevenueBase Database · checked Sep 21, 2026
14	Cyan Sentinel Limited	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 21, 2026	51-200	249 contacts →
	Indirect evidence “An International Shipowning and Marine Investment Company.” Source: RevenueBase Database · checked Sep 21, 2026
15	Swire Oilfield Services	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 21, 2026	501-1,000	202 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 21, 2026
16	Wilton Engineering	Indirect evidence	Middlesbrough, United KingdomHQ checked Sep 21, 2026	201-500	188 contacts →
	Indirect evidence “Wilton Engineering is a multi-disciplined Engineering Services provider based on a 113 acre site by the River Tees in Middlesbrough, North-East England.” Source: RevenueBase Database · checked Sep 21, 2026
17	Coretrax, An Expro Company	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 21, 2026	201-500	187 contacts →
	Indirect evidence “The global innovation leader enabling efficient and sustainable well lifecycle solutions.” Source: RevenueBase Database · checked Sep 21, 2026
18	Scantech Offshore Part Of James Fisher Energy	Indirect evidence	Great Yarmouth, United KingdomHQ checked Sep 21, 2026	51-200	179 contacts →
	Indirect evidence “ScanTech Offshore is the leading provider of air compressors, steam generators, heat exchangers, rig cooling deluge equipment and qualified personnel for the global well testing…” Source: RevenueBase Database · checked Sep 21, 2026
19	Aquaterra Energy	Indirect evidence	Norwich, United KingdomHQ checked Sep 21, 2026	51-200	167 contacts →
	Indirect evidence “Aquaterra Energy provides intelligently engineered products and services for well access and offshore developments - supporting efficient operations across the full life cycle of…” Source: RevenueBase Database · checked Sep 21, 2026
20	Interocean Marine Services	Indirect evidence	Portlethen, United KingdomHQ checked Sep 21, 2026	51-200	134 contacts →
	Indirect evidence “Interocean provide a comprehensive range of services to the offshore oil and gas, marine, and renewable sectors.” Source: RevenueBase Database · checked Sep 21, 2026
21	Hobark International Limited	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	201-500	113 contacts →
	Indirect evidence “Hobark International Limited (HIL) is an Integrated Services Company whose subsidiaries: DrillPet International Limited (DIL), Uniterm Nigeria Limited (UNL), UltiProc Nigeria…” Source: RevenueBase Database · checked Sep 21, 2026
22	Derrick Services UK LTD	Indirect evidence	Great Yarmouth, United KingdomHQ checked Sep 21, 2026	51-200	111 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 21, 2026
23	Tendeka	Indirect evidence	Westhill, United KingdomHQ checked Sep 21, 2026	5,001-10,000	92 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: oilfield companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names oilfield companies.
Partial evidence: Its own public description names part of oilfield companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name oilfield companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 23 of 516 oilfield companies based in the United Kingdom

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Oilfield companies based in the United Kingdom at a glance

As of Sep 21, 2026

20.0%Verified-email coverage

59.4Average contacts per company

11-50Median size (employees)

22.5%Largest-city concentration · Aberdeen

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

219

11-50

160

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 516 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 oilfield companies, 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 “oilfield companies”. 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 oilfield companies), 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 oilfield companies, 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, 6,135 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 21, 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.

Oilfield companies by metro

Oilfield companies in Aberdeen116
Oilfield companies in London82

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 oilfield companies, 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 oilfield companies are there based in the United Kingdom?

RevenueBase identified 516 oilfield companies 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?

Ensco PLC, headquartered in London, tops this list with the largest team on record.

Which city has the most oilfield companies?

Aberdeen leads with 116 headquartered companies, followed by London (82) and Portlethen (9).

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 6,135 verified decision-maker contacts tracked across these 516 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 21, 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.