Company lists · Data refreshed September 2026

Top 25 Subsurface exploration companies based in the United Kingdom

Name: Subsurface 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 22, 2026 213 companies tracked

RevenueBase identified 213 subsurface exploration companies headquartered in the United Kingdom as of September 2026 and tracks 3,828 professional contacts across them, including 1,195 with verified work emails. London is the largest hub.

This list covers subsurface 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 22, 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 22, 2026 86% judged on-target in blind review

213Companies

3,828Contacts tracked

1,195Verified emails

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The 25 largest subsurface exploration companies based in the United Kingdom

Ranked by team size

Top 25 of 213 subsurface exploration companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to subsurface 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	Gardline Limited	Indirect evidence	Great Yarmouth, United KingdomHQ checked Sep 22, 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 22, 2026
2	Sulmara	Indirect evidence	Glasgow, United KingdomHQ checked Sep 22, 2026	201-500	241 contacts →
	Indirect evidence “Sulmara is a global seabed intelligence company, capturing and interpreting high-quality subsea data to enable smarter offshore decisions.” Source: RevenueBase Database · checked Sep 22, 2026
3	Geotechnical Engineering Limited	Indirect evidence	Gloucester, United KingdomHQ checked Sep 22, 2026	51-200	187 contacts →
	Indirect evidence “Geotechnical is the leading independent provider of ground investigation in the UK, offering comprehensive intrusive surveys since 1961.” Source: RevenueBase Database · checked Sep 22, 2026
4	IGNE	Indirect evidence	Ross-on-wye, United KingdomHQ checked Sep 22, 2026	201-500	159 contacts →
	Indirect evidence “Igne is a leading UK specialist delivering integrated and stand-alone services across ground investigation, specialist drilling, UXO risk mitigation, materials testing…” Source: RevenueBase Database · checked Sep 22, 2026
5	Getech	Partial evidence	Leeds, United KingdomHQ checked Sep 22, 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 22, 2026
6	Dunelm Geotechnical & Environmental LTD	Indirect evidence	Durham, United KingdomHQ checked Sep 22, 2026	51-200	77 contacts →
	Indirect evidence “Dunelm has 50 years’ experience as leaders in the field of ground investigation, providing site investigation services on a national scale at competitive prices.” Source: RevenueBase Database · checked Sep 22, 2026
7	Zetica Limited	Indirect evidence	Eynsham, United KingdomHQ checked Sep 22, 2026	51-200	75 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 22, 2026
8	Causeway Geotech LTD	Indirect evidence	Ballymoney, United KingdomHQ checked Sep 22, 2026	51-200	60 contacts →
	Indirect evidence “Causeway Geotech Ltd bring together a team of Chartered Geotechnical Engineers with over 100 years of experience in total of offshore and onshore geotechnical ground investigation.” Source: RevenueBase Database · checked Sep 22, 2026
9	CC Ground Investigations Limited	Indirect evidence	Gloucester, United KingdomHQ checked Sep 22, 2026	51-200	60 contacts →
	Indirect evidence “CC Ground Investigations specialise in undertaking all types of geotechnical and environmental site investigation work throughout the U.K.” Source: RevenueBase Database · checked Sep 22, 2026
10	Stryde	Partial evidence	London, United KingdomHQ checked Sep 22, 2026	51-200	59 contacts →
	Partial 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 22, 2026
11	Geoactive Limited	Indirect evidence	Westhill, United KingdomHQ checked Sep 22, 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 22, 2026
12	IAN Farmer Associates 1998 Limited	Indirect evidence	Washington, United KingdomHQ checked Sep 22, 2026	51-200	54 contacts →
	Indirect evidence “Ian Farmer Associates has been carrying out ground investigations since 1985 and has built a strong client base of consulting engineers, builders, developers, architects…” Source: RevenueBase Database · checked Sep 22, 2026
13	Dando Drilling International	Partial evidence	Arundel, United KingdomHQ checked Sep 22, 2026	51-200	29 contacts →
	Partial evidence “Dando Drilling International has over 150 years experience of supplying drilling rigs and equipment for the water well, mineral exploration, geotechnical & geothermal sectors.” Source: RevenueBase Database · checked Sep 22, 2026
14	Metatek	Partial evidence	Milton Keynes, United KingdomHQ checked Sep 22, 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 22, 2026
15	Pallas Resources	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	1-10	24 contacts →
	Indirect evidence “Pallas Resources is a Central Asian explorer with a fresh approach to discovery.” Source: RevenueBase Database · checked Sep 22, 2026
16	Terradat UK LTD	Partial evidence	Cardiff, United KingdomHQ checked Sep 22, 2026	11-50	21 contacts →
	Partial evidence “Complex Geophysics delivered by Down to Earth people: 33 years' experience working with engineers & consultants delivering honest, reliable and objective subsurface mapping…” Source: RevenueBase Database · checked Sep 22, 2026
17	Sand Geophysics Limited	Indirect evidence	Hamble-le-rice, United KingdomHQ checked Sep 22, 2026	11-50	20 contacts →
	Indirect evidence “SAND Geophysics Ltd.” Source: RevenueBase Database · checked Sep 22, 2026
18	Rockwash Geodata	Indirect evidence	Llandudno Junction, United KingdomHQ checked Sep 22, 2026	11-50	19 contacts →
	Indirect evidence “Rockwash Geodata is a geological laboratory and service company founded in 2010 with headquarters in Llandudno Junction, North Wales and a focus on providing high-value…” Source: RevenueBase Database · checked Sep 22, 2026
19	Geoex MCG	Indirect evidence	Epsom, United KingdomHQ checked Sep 22, 2026	11-50	17 contacts →
	Indirect 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 22, 2026
20	Islay Subsurface & Engineering LTD	Partial evidence	London, United KingdomHQ checked Sep 22, 2026	1-10	17 contacts →
	Partial evidence “Islay Subsurface & Engineering Ltd was founded in 2010 by Iain Whyte to provide support to oil and gas operators, and their partners.” Source: RevenueBase Database · checked Sep 22, 2026
21	European Geophysical Services LTD	Indirect evidence	Hadnall, United KingdomHQ checked Sep 22, 2026	11-50	17 contacts →
	Indirect evidence “European Geophysical Services was established in 1994 and is a leading borehole geophysical logging and video surveying company providing a large range of measurements and…” Source: RevenueBase Database · checked Sep 22, 2026
22	Impact OIL & GAS	Partial evidence	Uk, United KingdomHQ checked Sep 22, 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 22, 2026
23	Solmek LTD	Indirect evidence	Stockton-on-tees, United KingdomHQ checked Sep 22, 2026	11-50	14 contacts →
	Indirect evidence “Solmek Ltd is an independent site investigation company which has been operating since 2002.” Source: RevenueBase Database · checked Sep 22, 2026
24	FWS Consultants LTD	Indirect evidence	Durham, United KingdomHQ checked Sep 22, 2026	11-50	13 contacts →
	Indirect evidence “FWS Consultants Ltd is an established, internationally recognised consultancy with over 40 years' experience providing ground investigation, geo-environmental, geotechnical and…” Source: RevenueBase Database · checked Sep 22, 2026
25	Jackson GEO Services	Indirect evidence	Llantrisant, United KingdomHQ checked Sep 22, 2026	1-10	13 contacts →
	Indirect evidence “Geotechnical and Geo Environmental Ground Investigation Contractor and Service Provider.” Source: RevenueBase Database · checked Sep 22, 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: subsurface 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 subsurface exploration companies.
Partial evidence: Its own public description names part of subsurface exploration companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name subsurface 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 213 subsurface exploration companies based in the United Kingdom

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Subsurface exploration companies based in the United Kingdom at a glance

As of Sep 22, 2026

31.2%Verified-email coverage

18.0Average contacts per company

1-10Median size (employees)

22.1%Largest-city concentration · London

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

131

11-50

51-200

201-500

501-1,000

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 213 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 subsurface 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 “subsurface 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 subsurface 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 subsurface 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, 1,195 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 22, 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.

Subsurface exploration companies by metro

Subsurface exploration companies in London47

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

RevenueBase identified 213 subsurface 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?

Gardline Limited, headquartered in Great Yarmouth, tops this list with the largest team on record.

Which city has the most subsurface exploration companies?

London leads with 47 headquartered companies, followed by Aberdeen (8) and Manchester (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 1,195 verified decision-maker contacts tracked across these 213 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 22, 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.