Company lists · Data refreshed September 2026

Top 25 Oil and gas exploration companies based in the United Kingdom

Name: Oil and gas exploration 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 17, 2026 285 companies tracked

RevenueBase identified 285 oil and gas exploration companies headquartered in the United Kingdom as of September 2026 and tracks 19,464 professional contacts across them, including 3,895 with verified work emails. London is the largest hub.

This list covers oil and gas exploration 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 17, 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 17, 2026 86% judged on-target in blind review

285Companies

19,464Contacts tracked

3,895Verified emails

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The 25 largest oil and gas exploration companies based in the United Kingdom

Ranked by team size

Top 25 of 285 oil and gas exploration companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to oil and gas exploration 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	Harbour Energy	Strong evidence	Victoria, United KingdomHQ checked Sep 17, 2026	1,001-5,000	2,216 contacts →
	Strong evidence “The largest independent oil and gas company listed on the London Stock Exchange.” Source: RevenueBase Database · checked Sep 17, 2026
2	Odfjell Drilling	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 17, 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 17, 2026
3	Hunting	Strong evidence	London, United KingdomHQ checked Sep 17, 2026	1,001-5,000	1,211 contacts →
	Strong 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 17, 2026
4	Cairn Energy PLC	Strong evidence	Edinburgh, United KingdomHQ checked Sep 17, 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 17, 2026
5	Assala Energy	Strong evidence	London, United KingdomHQ checked Sep 17, 2026	201-500	655 contacts →
	Strong evidence “Assala Energy is an oil exploration and production company.” Source: RevenueBase Database · checked Sep 17, 2026
6	Energean	Indirect evidence	London, United KingdomHQ checked Sep 17, 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 17, 2026
7	Gardline Limited	Indirect evidence	Great Yarmouth, United KingdomHQ checked Sep 17, 2026	501-1,000	545 contacts →
	Indirect evidence “Gardline is a best-in-class provider of geophysical, geotechnical and environmental marine surveys.” Source: RevenueBase Database · checked Sep 17, 2026
8	Northern Petroleum PLC	Strong evidence	London, United KingdomHQ checked Sep 17, 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 17, 2026
9	Serica Energy PLC	Strong evidence	Anderson Drive, United KingdomHQ checked Sep 17, 2026	201-500	271 contacts →
	Strong evidence “Serica is an AIM-listed, UK-based independent upstream oil and gas company with a balanced portfolio, delivering from multiple hubs and their associated subsea infrastructure in…” Source: RevenueBase Database · checked Sep 17, 2026
10	Derrick Services UK LTD	Strong evidence	Great Yarmouth, United KingdomHQ checked Sep 17, 2026	51-200	111 contacts →
	Strong 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 17, 2026
11	Awilco Drilling	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 17, 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 17, 2026
12	Getech	Indirect evidence	Leeds, United KingdomHQ checked Sep 17, 2026	51-200	82 contacts →
	Indirect evidence “Getech is a leading locator of subsurface resources essential for the world's energy security and sustainable transition.” Source: RevenueBase Database · checked Sep 17, 2026
13	Ophir-Energy	Strong evidence	London, United KingdomHQ checked Sep 17, 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 17, 2026
14	HRH Geology	Strong evidence	Aberdeen, United KingdomHQ checked Sep 17, 2026	51-200	73 contacts →
	Strong evidence “HRH Geology is the Oil and Gas Industry's leading provider of Operational Geology solutions.” Source: RevenueBase Database · checked Sep 17, 2026
15	Premier Corex UK	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 17, 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 17, 2026
16	Stryde	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	51-200	59 contacts →
	Indirect evidence “STRYDE is a leading onshore subsurface imaging solutions provider, revolutionising land seismic acquisition and data processing through ultra-lightweight, low-cost recording…” Source: RevenueBase Database · checked Sep 17, 2026
17	Geoactive Limited	Indirect evidence	Westhill, United KingdomHQ checked Sep 17, 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 17, 2026
18	JKX OIL & GAS	Strong evidence	Marylebone, United KingdomHQ checked Sep 17, 2026	501-1,000	47 contacts →
	Strong evidence “JKX Oil & Gas plc.” Source: RevenueBase Database · checked Sep 17, 2026
19	Panoro Energy	Indirect evidence	London, United KingdomHQ checked Sep 17, 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 17, 2026
20	Aminex PLC	Strong evidence	London, United KingdomHQ checked Sep 17, 2026	n/a	36 contacts →
	Strong evidence “Aminex is an Africa-focused oil and gas company with near term production, development and high impact exploration, listed on the London Stock Exchange and primary-listed on the…” Source: RevenueBase Database · checked Sep 17, 2026
21	Pharos Energy	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	11-50	28 contacts →
	Indirect evidence “Pharos Energy is an independent energy company listed on the main market of the London Stock Exchange focused on delivering sustainable growth and returns to stakeholders, with a…” Source: RevenueBase Database · checked Sep 17, 2026
22	Metatek	Indirect evidence	Milton Keynes, United KingdomHQ checked Sep 17, 2026	11-50	26 contacts →
	Indirect evidence “Metatek is a global geophysical services company providing high-definition mapping of subsurface strategic and critical mineral natural resources, energy (including hydrocarbons)…” Source: RevenueBase Database · checked Sep 17, 2026
23	Heritage OIL Limited	Strong evidence	London, United KingdomHQ checked Sep 17, 2026	201-500	26 contacts →
	Strong evidence “Heritage Oil Limited is an independent and privately owned oil & gas exploration and operating company” Source: RevenueBase Database · checked Sep 17, 2026
24	NEW AGE African Global Energy Limited	Strong evidence	London, United KingdomHQ checked Sep 17, 2026	51-200	25 contacts →
	Strong evidence “New Age (African Global Energy) Limited is a privately held oil and gas company with a portfolio of quality assets in seven countries, mostly in sub-Saharan Africa, a highly…” Source: RevenueBase Database · checked Sep 17, 2026
25	Bowleven PLC	Strong evidence	London Bridge, United KingdomHQ checked Sep 17, 2026	1-10	22 contacts →
	Strong evidence “Bowleven plc is an Africa-focused, oil & gas company, dedicated to realising material shareholder value from its assets in Cameroon, whilst maintaining capital discipline and…” Source: RevenueBase Database · checked Sep 17, 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: oil and gas exploration 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 oil and gas exploration companies.
Partial evidence: Its own public description names part of oil and gas exploration companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name oil and gas exploration 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 285 oil and gas exploration companies based in the United Kingdom

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Oil and gas exploration companies based in the United Kingdom at a glance

As of Sep 17, 2026

20.0%Verified-email coverage

68.3Average contacts per company

1-10Median size (employees)

37.9%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

151

11-50

51-200

201-500

501-1,000

1,001-5,000

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 285 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 oil and gas exploration 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 “oil and gas exploration 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 oil and gas exploration 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 oil and gas exploration 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, 3,895 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 17, 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.

Oil and gas exploration companies by metro

Oil and gas exploration companies in London108

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 oil and gas exploration 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 oil and gas exploration companies are there based in the United Kingdom?

RevenueBase identified 285 oil and gas exploration 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?

Harbour Energy, headquartered in Victoria, tops this list with the largest team on record.

Which city has the most oil and gas exploration companies?

London leads with 108 headquartered companies, followed by Aberdeen (24) and Edinburgh (5).

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 3,895 verified decision-maker contacts tracked across these 285 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 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 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.