Company lists · Data refreshed September 2026

Top 22 Geothermal drilling companies based in the United Kingdom

RevenueBase identified 75 company matches for geothermal drilling companies associated with the United Kingdom as of September 2026 and tracks 497 professional contacts across them, including 141 with verified work emails. London is the largest hub.

This list covers company matches for geothermal drilling 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
75Companies
497Contacts tracked
141Verified emails
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The 22 largest geothermal drilling companies based in the United Kingdom

Ranked by team size
Top 22 of 75 company matches for geothermal drilling 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 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
2Exact matchBury St Edmunds, United KingdomHQ recorded Sep 20, 202651-20030 contacts →

Exact match

“MGS manufactures and supplies specialist quality products for use in ground investigation, water well, and geothermal drilling applications, as well as a variety of railway…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3Exact 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
4Exact 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
5Exact 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
6Exact matchWestbury, United KingdomHQ recorded Sep 20, 202611-5017 contacts →

Exact match

“Marshall Drilling offer a nationwide service providing a range of drilling services, specialising in geotechnical and geo-environmental rotary drilling.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7Exact matchKirdford, United KingdomHQ recorded Sep 20, 202651-20014 contacts →

Exact match

“Nicholls Boreholes & Ground Source is an established, industry leading, family-run, specialist drilling company.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8Exact 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
9Exact 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
10Exact 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
11Exact matchKirkby-in-ashfield, United KingdomHQ recorded Sep 20, 202611-509 contacts →

Exact match

“Groundsource Drilling & Contracting Limited is a specialised drilling contractor providing a quality, professional, and reliable drilling service to the public, private and…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12Exact matchKempston, United KingdomHQ recorded Sep 20, 202611-508 contacts →

Exact match

“ANTS Group are a leading supplier of Renewables, Civils, Drilling and Environmental services.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchKinsham, United KingdomHQ recorded Sep 20, 202611-508 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14Exact matchLey Hill, United KingdomHQ recorded Sep 20, 202611-505 contacts →

Exact match

“Ground Investigation, Geotechnical Design Advice, Geothermal Energy, Water Abstraction, Expert Opinion, Knowledge and Training – TFGI provide the essential Ground Engineering…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15Exact matchBordon, United KingdomHQ recorded Sep 20, 202611-504 contacts →

Exact match

“At Onsen Energy, we provide homeowners, developers, sports clubs, schools and the wider energy market with ground source heating systems and drilling services.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16Exact matchCambridge, United KingdomHQ recorded Sep 20, 20261-104 contacts →

Exact match

“Primeval Energy is a geothermal solutions company, newly established by seasoned oil and gas, geothermal, finance and commercial professionals.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17Exact matchSheffield, United KingdomHQ recorded Sep 20, 202651-2004 contacts →

Exact match

“Consortium Drilling is a leading onshore deep drilling contractor based in the heart of the UK.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18Exact matchHereford, United KingdomHQ recorded Sep 20, 20261-103 contacts →

Exact match

“At Drift, we deliver precision drilling solutions that unlock secure water supplies and sustainable energy for projects across the UK.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19Exact matchCheshire, United KingdomHQ recorded Sep 20, 202611-502 contacts →

Exact match

“Geo Energy Holding is a UK based global renewable energy holding with the vision of utilizing each droplet of geothermal brine and steam, maximizing power generation efficiencies…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20Exact matchDundee, United KingdomHQ recorded Sep 20, 20261-102 contacts →

Exact match

“Oilfield International Services (OIS) empowers small-to-medium IOCs to overcome complex drilling challenges.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21Exact matchKings Lynn, United KingdomHQ recorded Sep 20, 20261-102 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22Exact matchGloucester, United KingdomHQ recorded Sep 20, 20261-102 contacts →

Exact match

“Established in 2016, we are an independent drilling company based in Gloucestershire.”

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

Showing 22 of 75 geothermal drilling companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 141 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Geothermal drilling companies based in the United Kingdom at a glance

As of Sep 20, 2026
28.4%Verified-email coverage
6.6Average contacts per company
1-10Median size (employees)
8.0%Largest-city concentration · London
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
39
11-50
28
51-200
5
501-1,000
1

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 75 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 drilling 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 141 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 drilling companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 75 company matches for geothermal drilling 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?

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

Which city has the most geothermal drilling companies?

London leads with 6 company records, followed by Aberdeen (2) and Lincoln (2).

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 141 professional contacts with verified work emails tracked across these 75 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.