Company lists · Data refreshed September 2026
Top 25 Geotechnical consulting firms based in the United Kingdom
RevenueBase identified 1,254 geotechnical consulting firms headquartered in the United Kingdom as of September 2026 and tracks 20,929 professional contacts across them, including 7,279 with verified work emails and 1,428 with mobile numbers. London is the largest hub.
This list covers geotechnical consulting firms 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, how directly it supports the match, and when it was last checked. Data refreshed September 3, 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.
The 25 largest geotechnical consulting firms based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | KellerPartial evidence | 3,952 | |||
“Every day, people around the world live, work and play on ground prepared by Keller, the world's largest geotechnical specialist contractor.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 2 | 446 | ||||
“Welcome to Fairhurst: Fairhurst is a Limited Liability Partnership (LLP) of Consulting Engineers practicing in the UK, employing circa 400 staff in 16 principal offices.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 3 | VAN ElleIndirect evidence | 306 | |||
“Van Elle is the UK’s largest ground engineering contractor.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 4 | Roger Bullivant LimitedIndirect evidence | 278 | |||
“Roger Bullivant Limited is one of the UK’s leading piling, foundation and ground improvement contractors - We are passionate about ground engineering, foundations and all things…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 5 | 221 | ||||
“Roughan and O’Donovan (ROD) is a leading civil, environmental and structural engineering consultancy.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 6 | 187 | ||||
“Geotechnical is the leading independent provider of ground investigation in the UK, offering comprehensive intrusive surveys since 1961.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 7 | 179 | ||||
“With two main specialist areas - structures and geotechnical, the Expanded Group provides a total capability in the early construction phases of major projects.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 8 | JNP GroupIndirect evidence | 165 | |||
“With over 40 years experience JNP Group deliver highly professional, integrated efficient design and consultancy solutions from inception to completion, irrespective of project…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 9 | 162 | ||||
“We're not just service providers; we're your long-term partners in creating a sustainable, compliant, and efficient future for your assets.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 10 | 158 | ||||
“Igne is a leading UK specialist delivering integrated and stand-alone services across ground investigation, specialist drilling, UXO risk mitigation, materials testing…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 11 | The Sirius GroupIndirect evidence | 156 | |||
“End to End Service: From initial investigations and assessments to planning, design and engineering support, we give you a foundation of confidence for your site development…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 12 | 153 | ||||
“Aarsleff Ground Engineering Ltd is a subsidiary of Aarsleff A/S, one of Denmark’s leading civil engineering contractors.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 13 | Structural SoilsIndirect evidence | 136 | |||
“Structural Soils offer comprehensive ground Investigation services to a range of clients in the public and private sector.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 14 | 112 | ||||
“CampbellReith is an independent firm of consulting engineers providing structural, civil, geotechnical, land quality, development planning and transport planning services.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 15 | WALSHPartial evidence | 109 | |||
“Walsh is a leading UK structural, civil & geotechnical engineering consultancy who specialise in urban regeneration projects.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 16 | 108 | ||||
“The MSA Group is a leading provider of exploration, geology, mineral resource and reserve estimation, mining and environmental consulting services to the mining industry.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 17 | Soil Engineering Geoservices LimitedPartial evidence | 106 | |||
“Soil Engineering has been involved with the geotechnical sector since 1963.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 18 | 96 | ||||
“Crouch Waterfall is an established firm of Civil, Structural and Geotechnical Consulting Engineers with extensive experience of Railways, Buildings, Roads, Bridges and Waterways.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 19 | 95 | ||||
“Glanville Consultants is a multi-disciplinary engineering and surveying consultancy that provides a wide range of services including Structural Engineering, Civil Engineering…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 20 | 90 | ||||
“Simpson TWS is a successful civil and structural engineering consultancy.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 21 | 89 | ||||
“GGP Consult is a privately-owned multidisciplinary Consulting Engineering Company which was established in 1994.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 22 | 89 | ||||
“Since its inception in 1987, ACS Testing Ltd have been providing quality materials testing and Consultancy services to the Building, Construction and Civil Engineering industries…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 23 | 86 | ||||
“CGL is a leading specialist geotechnical consultancy and has a reputation for solving difficult technical problems with value engineering in construction projects.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 24 | RichterIndirect evidence | 86 | |||
“Engineering Value Together - from incubation, to project realisation.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 25 | 77 | ||||
“Will Rudd are Consulting Civil & Structural Engineers with an excellent track record in delivering a quality product.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 1,254 geotechnical consulting firms based in the United Kingdom
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Geotechnical consulting firms based in the United Kingdom at a glance
As of Sep 3, 2026Companies by employee count
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 geotechnical consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 “geotechnical consulting firms”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among geotechnical consulting firms, 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 an evidence 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, 7,279 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 3, 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.
Geotechnical consulting firms by metro
- Geotechnical consulting firms in London139
- Geotechnical consulting firms in Birmingham27
- Geotechnical consulting firms in Manchester25
Frequently asked
How many geotechnical consulting firms are there based in the United Kingdom?
RevenueBase identified 1,254 geotechnical consulting firms 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?
Keller, headquartered in London, tops this list with the largest team on record.
Which city has the most geotechnical consulting firms?
London leads with 139 headquartered companies, followed by Birmingham (27) and Manchester (25).
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 7,279 verified decision-maker contacts tracked across these 1,254 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 3, 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.
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