Company lists · Data refreshed September 2026

Top 25 Exploration and production companies based in the United Kingdom

Name: Exploration and production 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 19, 2026 323 companies tracked

RevenueBase identified 323 exploration and production companies headquartered in the United Kingdom as of September 2026 and tracks 20,920 professional contacts across them, including 3,315 with verified work emails. London is the largest hub.

This list covers exploration and production 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 19, 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 19, 2026 86% judged on-target in blind review

323Companies

20,920Contacts tracked

3,315Verified emails

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The 25 largest exploration and production companies based in the United Kingdom

Ranked by team size

Top 25 of 323 exploration and production companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to exploration and production 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 19, 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 19, 2026
2	Odfjell Drilling	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 19, 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 19, 2026
3	Hunting	Indirect evidence	London, United KingdomHQ checked Sep 19, 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 19, 2026
4	Excellence Logging	Indirect evidence	London W2 2es, United KingdomHQ checked Sep 19, 2026	1,001-5,000	933 contacts →
	Indirect evidence “Excellence Logging is an established energy services provider focused on optimizing well performance.” Source: RevenueBase Database · checked Sep 19, 2026
5	Cairn Energy PLC	Strong evidence	Edinburgh, United KingdomHQ checked Sep 19, 2026	201-500	927 contacts →
	Strong evidence “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.” Source: RevenueBase Database · checked Sep 19, 2026
6	Assala Energy	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	201-500	655 contacts →
	Strong evidence “Assala Energy is an oil exploration and production company.” Source: RevenueBase Database · checked Sep 19, 2026
7	Energean	Indirect evidence	London, United KingdomHQ checked Sep 19, 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 19, 2026
8	Northern Petroleum PLC	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	n/a	314 contacts →
	Strong 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 19, 2026
9	Chrysaor	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	n/a	126 contacts →
	Strong evidence “Established in 2007, Chrysaor was an independent exploration and production (E&P) group with a focus on generating superior quality returns by safely developing and…” Source: RevenueBase Database · checked Sep 19, 2026
10	Aquaterra Group LTD	Indirect evidence	Kintore, United KingdomHQ checked Sep 19, 2026	11-50	123 contacts →
	Indirect evidence “RELIABLE \| RESOURCEFUL \| READY We continually raise the bar by challenging ourselves and our clients to enable safe and efficient performance.” Source: RevenueBase Database · checked Sep 19, 2026
11	Hobark International Limited	Indirect evidence	London, United KingdomHQ checked Sep 19, 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 19, 2026
12	Derrick Services UK LTD	Indirect evidence	Great Yarmouth, United KingdomHQ checked Sep 19, 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 19, 2026
13	AXIS	Strong evidence	Aberdeenshire, United KingdomHQ checked Sep 19, 2026	51-200	94 contacts →
	Strong evidence “Based in Aberdeen, Axis is an independent consultancy providing specialist Exploration and Production, Decommissioning and Low Carbon expertise to the global energy industry and…” Source: RevenueBase Database · checked Sep 19, 2026
14	Awilco Drilling	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 19, 2026	51-200	88 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
15	Ophir-Energy	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	201-500	79 contacts →
	Strong evidence “Ophir Energy plc (Ophir) is an independent upstream oil and gas exploration and production company focused on Africa and Asia.” Source: RevenueBase Database · checked Sep 19, 2026
16	HRH Geology	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 19, 2026	51-200	73 contacts →
	Indirect evidence “HRH Geology is the Oil and Gas Industry's leading provider of Operational Geology solutions.” Source: RevenueBase Database · checked Sep 19, 2026
17	RDS	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 19, 2026	1,001-5,000	70 contacts →
	Indirect evidence “RDS is an engineering specialist working for oil and gas companies and major topsides and drilling contractors.” Source: RevenueBase Database · checked Sep 19, 2026
18	Premier Corex UK	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 19, 2026	51-200	67 contacts →
	Indirect evidence “Premier Corex: Illuminating the Subsurface We are Premier Corex, a world-class laboratory partner delivering cutting-edge core analysis, fluid characterization, and subsurface…” Source: RevenueBase Database · checked Sep 19, 2026
19	Geoactive Limited	Indirect evidence	Westhill, United KingdomHQ checked Sep 19, 2026	51-200	54 contacts →
	Indirect evidence “Geoactive Limited is made up of an expert team of scientists, developers and all-round exceptional human beings that design, develop and produce high-quality digital products for…” Source: RevenueBase Database · checked Sep 19, 2026
20	Saltire Energy Group	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 19, 2026	51-200	51 contacts →
	Indirect evidence “Established in 1986, Saltire Energy Group supplies high-quality drilling equipment to the global oil and gas industry from its headquarters in Aberdeen and seven bases around the…” Source: RevenueBase Database · checked Sep 19, 2026
21	JKX OIL & GAS	Indirect evidence	Marylebone, United KingdomHQ checked Sep 19, 2026	501-1,000	47 contacts →
	Indirect evidence “JKX Oil & Gas plc.” Source: RevenueBase Database · checked Sep 19, 2026
22	Panoro Energy	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	41 contacts →
	Indirect evidence “Panoro Energy ASA is an independent E&P company based in London and listed on the Oslo Stock Exchange with ticker PEN.” Source: RevenueBase Database · checked Sep 19, 2026
23	Rigquip	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 19, 2026	51-200	37 contacts →
	Indirect evidence “At RigQuip, we’re not just drilling equipment experts-we’re your strategic partner in energy asset performance.” Source: RevenueBase Database · checked Sep 19, 2026
24	Gorevega	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 19, 2026	51-200	37 contacts →
	Indirect evidence “GoreVega supports the global oil and gas industry by providing valuable technical expertise for operators and service companies at each stage of a well’s lifecycle, from drilling…” Source: RevenueBase Database · checked Sep 19, 2026
25	Costain Upstream LTD	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 19, 2026	201-500	37 contacts →
	Indirect evidence “We provide innovative engineering and technology-led solutions to meet the needs of our customers.” Source: RevenueBase Database · checked Sep 19, 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: exploration and production 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 exploration and production companies.
Partial evidence: Its own public description names part of exploration and production companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name exploration and production 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 25 of 323 exploration and production companies based in the United Kingdom

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Exploration and production companies based in the United Kingdom at a glance

As of Sep 19, 2026

15.8%Verified-email coverage

64.8Average contacts per company

1-10Median size (employees)

31.6%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

166

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 323 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 exploration and production 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 “exploration and production 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 exploration and production 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 exploration and production 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, 3,315 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 19, 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.

Exploration and production companies by metro

Exploration and production companies in London102
Exploration and production companies in Aberdeen51

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 exploration and production 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 exploration and production companies are there based in the United Kingdom?

RevenueBase identified 323 exploration and production 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 exploration and production companies?

London leads with 102 headquartered companies, followed by Aberdeen (51) and Bath (4).

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 3,315 verified decision-maker contacts tracked across these 323 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 19, 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.