Company lists · Data refreshed September 2026

Top 25 Geothermal exploration companies based in the United Kingdom

RevenueBase identified 150 company matches for geothermal exploration companies associated with the United Kingdom as of September 2026 and tracks 2,279 professional contacts across them, including 448 with verified work emails. London is the largest hub.

This list covers company matches for geothermal exploration 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 20, 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 20, 2026 How this list was built
150Companies
2,279Contacts tracked
448Verified emails
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The 25 largest geothermal exploration companies based in the United Kingdom

Ranked by team size
Top 25 of 150 company matches for geothermal exploration companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 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 matchFleet, United KingdomHQ recorded Sep 20, 202611-50144 contacts →

Exact match

“EPI Group is a leading provider of specialist geoscience, QHSE, environmental and technical services for the energy industry worldwide.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2Exact matchPenryn, United KingdomHQ recorded Sep 20, 202611-5097 contacts →

Exact match

“Cornish Lithium is pioneering the clean extraction of lithium to support the UK’s transition to renewable energy and secure a domestic supply for the batteries that power consumer…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3Exact matchSudbrooke, United KingdomHQ recorded Sep 20, 202651-20083 contacts →

Exact match

“Star Energy Group plc is a British energy business.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4Exact matchLeeds, United KingdomHQ recorded Sep 20, 202651-20082 contacts →

Exact match

“Getech is a leading locator of subsurface resources essential for the world's energy security and sustainable transition.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5Exact matchEynsham, United KingdomHQ recorded Sep 20, 202651-20075 contacts →

Exact match

“Zetica is the UK’s leader in engineering and environmental geophysics, with an enviable reputation for objective advice, novel problem solving, consistently high-quality surveys…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6Exact matchArundel, United KingdomHQ recorded Sep 20, 202651-20029 contacts →

Exact match

“Dando Drilling International has over 150 years experience of supplying drilling rigs and equipment for the water well, mineral exploration, geotechnical & geothermal sectors.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7Exact matchGreat Yarmouth, United KingdomHQ recorded Sep 20, 202611-5028 contacts →

Exact match

“CeraPhi Energy is a leading project development company delivering global geothermal energy solutions at scale.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8Exact matchMilton Keynes, United KingdomHQ recorded Sep 20, 202611-5026 contacts →

Exact match

“Metatek is a global geophysical services company providing high-definition mapping of subsurface strategic and critical mineral natural resources, energy (including hydrocarbons)…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Sep 20, 202611-5024 contacts →

Exact match

“Ariana Resources is an AIM-listed gold exploration and development company focused on precious and technology metals.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10Exact matchSeaham, United KingdomHQ recorded Sep 20, 202611-5021 contacts →

Exact match

“Drilcorp was established in 1992 and since then has developed into one of the UK’s top drilling companies.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11Exact matchEpsom, United KingdomHQ recorded Sep 20, 202611-5017 contacts →

Exact match

“We are a multi-disciplinary team of experts in geoscience, interpretation, operations and marketing with an intimate knowledge of the energy industry.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12Exact matchBingham, United KingdomHQ recorded Sep 20, 20261-1015 contacts →

Exact match

“IGS (International Geoscience Services) Ltd is a UK based, specialist consultancy supporting and promoting the mineral resource sector by collecting, quality control, defining…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchFalmouth, United KingdomHQ recorded Sep 20, 202611-5014 contacts →

Exact match

“GeoScience Limited is an independent earth science consultancy, providing engineering, geomechanics and reservoir geology solutions to the oil, gas and geothermal industries.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14Exact matchRedruth, United KingdomHQ recorded Sep 20, 20261-1014 contacts →

Exact match

“GEL has brought the most experienced geothermal engineers together with leading industry partners to develop the UK's first large-scale geothermal energy plant in Cornwall.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15Exact matchEdinburgh City, United KingdomHQ recorded Sep 20, 202611-5014 contacts →

Exact match

“We are an award-winning geothermal company based in Edinburgh, Scotland and a leading specialist in all aspects of the UK’s geothermal resources.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16Exact matchAylesbury, United KingdomHQ recorded Sep 20, 202611-5014 contacts →

Exact match

“We specialise in Geothermal Ground Source Boreholes and Water Boreholes up to 300m.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17Exact matchAbingdon, United KingdomHQ recorded Sep 20, 202651-20012 contacts →

Exact match

“The Neftex® Predictions portfolio from Halliburton Landmark delivers an unparalleled global view of Earth’s tectonostratigraphic history and associated resource potential.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18Exact matchOxford-cambridge Technology Arc, United KingdomHQ recorded Sep 20, 20261-1010 contacts →

Exact match

“You deserve a better experience from your next seismic project.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19Exact matchLondon, United KingdomHQ recorded Sep 20, 20261-109 contacts →

Exact match

“Smart, sustainable heating and cooling, powered by the earth.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20Exact matchCornwall, United KingdomHQ recorded Sep 20, 202611-507 contacts →

Exact match

“Eden Geothermal Ltd is a partnership between Eden Project, EGS Energy Ltd, and Bestec (UK) Ltd, set up to unlock the geothermal energy deep in the granite beneath Cornwall.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21Exact matchNorth Berwick, United KingdomHQ recorded Sep 20, 20261-107 contacts →

Exact match

“Western Gold Exploration Limited is exploring Scotland for Gold, Copper, and critical minerals across its Lorne Porphyry and Calendonian Gold Projects.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22Exact matchEpsom, United KingdomHQ recorded Sep 20, 20261-107 contacts →

Exact match

“Founded in 2022, H2Au is leading the way in natural hydrogen exploration and production (E&P), combining proven exploration techniques and unique play-based models to identify…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23Exact matchLondon, United KingdomHQ recorded Sep 20, 202611-507 contacts →

Exact match

“Sunda Energy is an independent gas-focused company.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24Exact matchLondon, United KingdomHQ recorded Sep 20, 20261-106 contacts →

Exact match

“At Addison Mining Services Ltd we pride ourselves on delivering high quality mining solutions to the global mineral industry.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25Exact matchWeardale, United KingdomHQ recorded Sep 20, 202611-506 contacts →

Exact match

“Weardale Lithium limited is a natural resources exploration and development company.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

Showing 25 of 150 geothermal exploration companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 448 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Geothermal exploration companies based in the United Kingdom at a glance

As of Sep 20, 2026
19.7%Verified-email coverage
15.2Average contacts per company
1-10Median size (employees)
24.0%Largest-city concentration · London
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
95
11-50
45
51-200
8

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 150 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 “geothermal exploration 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 448 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 20, 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 “geothermal exploration companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many geothermal exploration companies are there based in the United Kingdom?

RevenueBase identified 150 company matches for geothermal exploration 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?

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

Which city has the most geothermal exploration companies?

London leads with 36 company records, followed by Aberdeen (5) and Edinburgh (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 448 professional contacts with verified work emails tracked across these 150 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 20, 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 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.