Company lists · Data refreshed September 2026

Top 25 Energy exploration companies based in the United Kingdom

Name: Energy 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 16, 2026 180 companies tracked

RevenueBase identified 180 energy exploration companies headquartered in the United Kingdom as of September 2026 and tracks 11,231 professional contacts across them, including 2,259 with verified work emails. London is the largest hub.

This list covers energy 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 16, 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 16, 2026 86% judged on-target in blind review

180Companies

11,231Contacts tracked

2,259Verified emails

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The 25 largest energy exploration companies based in the United Kingdom

Ranked by team size

Top 25 of 180 energy exploration companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to energy 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	Indirect evidence	Victoria, United KingdomHQ checked Sep 16, 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 16, 2026
2	Hunting	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	1,001-5,000	1,211 contacts →
	Partial 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 16, 2026
3	Cairn Energy PLC	Strong evidence	Edinburgh, United KingdomHQ checked Sep 16, 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 16, 2026
4	Assala Energy	Strong evidence	London, United KingdomHQ checked Sep 16, 2026	201-500	655 contacts →
	Strong evidence “Assala Energy is an oil exploration and production company.” Source: RevenueBase Database · checked Sep 16, 2026
5	Energean	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	501-1,000	587 contacts →
	Partial 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 16, 2026
6	Northern Petroleum PLC	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	n/a	314 contacts →
	Partial 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 16, 2026
7	Star Energy Group PLC	Partial evidence	Sudbrooke, United KingdomHQ checked Sep 16, 2026	51-200	83 contacts →
	Partial evidence “Star Energy Group plc is a British energy business.” Source: RevenueBase Database · checked Sep 16, 2026
8	Getech	Partial evidence	Leeds, United KingdomHQ checked Sep 16, 2026	51-200	82 contacts →
	Partial evidence “Getech is a leading locator of subsurface resources essential for the world's energy security and sustainable transition.” Source: RevenueBase Database · checked Sep 16, 2026
9	Ophir-Energy	Strong evidence	London, United KingdomHQ checked Sep 16, 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 16, 2026
10	JKX OIL & GAS	Indirect evidence	Marylebone, United KingdomHQ checked Sep 16, 2026	501-1,000	47 contacts →
	Indirect evidence “JKX Oil & Gas plc.” Source: RevenueBase Database · checked Sep 16, 2026
11	Panoro Energy	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	11-50	41 contacts →
	Partial 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 16, 2026
12	SDX Energy PLC	Strong evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	37 contacts →
	Strong evidence “SDX Energy Plc is a MENA focused oil and gas exploration, production and development company based out of London.” Source: RevenueBase Database · checked Sep 16, 2026
13	Aminex PLC	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	n/a	36 contacts →
	Partial 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 16, 2026
14	Fred. Olsen Limited	Indirect evidence	London, United KingdomHQ checked Sep 16, 2026	501-1,000	35 contacts →
	Indirect evidence “Established in the UK in 1963 Fred.” Source: RevenueBase Database · checked Sep 16, 2026
15	Pharos Energy	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	11-50	28 contacts →
	Partial 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 16, 2026
16	Metatek	Partial evidence	Milton Keynes, United KingdomHQ checked Sep 16, 2026	11-50	26 contacts →
	Partial 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 16, 2026
17	Heritage OIL Limited	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	201-500	26 contacts →
	Partial evidence “Heritage Oil Limited is an independent and privately owned oil & gas exploration and operating company” Source: RevenueBase Database · checked Sep 16, 2026
18	NEW AGE African Global Energy Limited	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	25 contacts →
	Partial 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 16, 2026
19	Ariana Resources PLC	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	11-50	24 contacts →
	Partial evidence “Ariana Resources is an AIM-listed gold exploration and development company focused on precious and technology metals.” Source: RevenueBase Database · checked Sep 16, 2026
20	Block Energy PLC	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	1-10	19 contacts →
	Partial evidence “Block Energy is an AIM-listed production and development company applying innovative technology to realise the full potential of previously discovered fields in Georgia.” Source: RevenueBase Database · checked Sep 16, 2026
21	Corcel PLC	Indirect evidence	London, United KingdomHQ checked Sep 16, 2026	1-10	18 contacts →
	Indirect evidence “Corcel is an independent upstream oil and gas company focused on emerging opportunities across Africa and LATAM.” Source: RevenueBase Database · checked Sep 16, 2026
22	Geoex MCG	Partial evidence	Epsom, United KingdomHQ checked Sep 16, 2026	11-50	17 contacts →
	Partial evidence “We are a multi-disciplinary team of experts in geoscience, interpretation, operations and marketing with an intimate knowledge of the energy industry.” Source: RevenueBase Database · checked Sep 16, 2026
23	Gulfsands	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	16 contacts →
	Partial evidence “Gulfsands is an independent, public energy company, incorporated in the United Kingdom focused on growth in the Middle East and North Africa region.” Source: RevenueBase Database · checked Sep 16, 2026
24	Impact OIL & GAS	Partial evidence	Uk, United KingdomHQ checked Sep 16, 2026	11-50	16 contacts →
	Partial evidence “Impact is a frontier exploration company with early-stage, deep water prospective hydrocarbon plays that are of sufficient size to attract Oil Majors as partners ahead of drilling.” Source: RevenueBase Database · checked Sep 16, 2026
25	Surestream Petroleum Limited	Partial evidence	Reading, United KingdomHQ checked Sep 16, 2026	11-50	13 contacts →
	Partial evidence “Surestream Petroleum is an independent, UK-based, oil exploration company that was founded in September 2004 by the present management team with the aim to build a balanced and…” Source: RevenueBase Database · checked Sep 16, 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: energy 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 energy exploration companies.
Partial evidence: Its own public description names part of energy exploration companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy 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 180 energy exploration companies based in the United Kingdom

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Energy exploration companies based in the United Kingdom at a glance

As of Sep 16, 2026

20.1%Verified-email coverage

62.4Average contacts per company

1-10Median size (employees)

54.4%Largest-city concentration · London

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

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 180 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 energy 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 “energy 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 energy 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 energy 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, 2,259 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 16, 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.

Energy exploration companies by metro

Energy exploration companies in London98

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 energy 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 energy exploration companies are there based in the United Kingdom?

RevenueBase identified 180 energy 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 energy exploration companies?

London leads with 98 headquartered companies, followed by Aberdeen (7) and Leeds (3).

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 2,259 verified decision-maker contacts tracked across these 180 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 16, 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.