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.

How to read this list Match evidence on every row Refreshed Sep 3, 2026 86% judged on-target in blind review
1,254Companies
20,929Contacts tracked
7,279Verified emails
1,428Mobile numbers
Unlock all 1,254 companies Free signup · no credit card · 500 free credits

The 25 largest geotechnical consulting firms based in the United Kingdom

Ranked by team size
Top 25 of 1,254 geotechnical consulting firms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 3, 2026. Evidence rates how directly each company's own description names geotechnical consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
KellerPartial evidence
London, United Kingdom5,001-10,0003,952

“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, 2026
2
FairhurstPartial evidence
London, United Kingdom201-500446

“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, 2026
3
VAN ElleIndirect evidence
Blantyre, United Kingdom501-1,000306

“Van Elle is the UK’s largest ground engineering contractor.”

Source: company website · checked Sep 3, 2026
4
Roger Bullivant LimitedIndirect evidence
Swadlincote, United Kingdom501-1,000278

“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, 2026
5
Roughan & O'donovanIndirect evidence
Otley Leeds, United Kingdom201-500221

“Roughan and O’Donovan (ROD) is a leading civil, environmental and structural engineering consultancy.”

Source: company website · checked Sep 3, 2026
6Manchester, United Kingdom51-200187

Geotechnical is the leading independent provider of ground investigation in the UK, offering comprehensive intrusive surveys since 1961.”

Source: company website · checked Sep 3, 2026
7
ExpandedPartial evidence
Dartford, United Kingdom1,001-5,000179

“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, 2026
8
JNP GroupIndirect evidence
Hartlepool, United Kingdom51-200165

“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, 2026
9
LucionIndirect evidence
Gateshead, United Kingdom501-1,000162

“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, 2026
10
IGNEIndirect evidence
Daventry, United Kingdom201-500158

“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, 2026
11
The Sirius GroupIndirect evidence
Durham, United Kingdom201-500156

“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, 2026
12Knaresborough, United Kingdom201-500153

“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, 2026
13
Structural SoilsIndirect evidence
Hemel Hempstead, United Kingdom201-500136

“Structural Soils offer comprehensive ground Investigation services to a range of clients in the public and private sector.”

Source: company website · checked Sep 3, 2026
14
CampbellreithStrong evidence
Manchester, United Kingdom51-200112

“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, 2026
15
WALSHPartial evidence
Birmingham, United Kingdom51-200109

“Walsh is a leading UK structural, civil & geotechnical engineering consultancy who specialise in urban regeneration projects.”

Source: company website · checked Sep 3, 2026
16
The MSA GroupPartial evidence
Cardiff, United Kingdom51-200108

“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, 2026
17Leeds, United Kingdom51-200106

“Soil Engineering has been involved with the geotechnical sector since 1963.”

Source: company website · checked Sep 3, 2026
18Bristol, United Kingdom51-20096

“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, 2026
19
Glanville Consultants LTDIndirect evidence
Didcot, United Kingdom51-20095

“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, 2026
20
Simpson TWSIndirect evidence
Gloucester, United Kingdom51-20090

“Simpson TWS is a successful civil and structural engineering consultancy.”

Source: company website · checked Sep 3, 2026
21
GGP ConsultPartial evidence
Hull, United Kingdom51-20089

“GGP Consult is a privately-owned multidisciplinary Consulting Engineering Company which was established in 1994.”

Source: company website · checked Sep 3, 2026
22
ACSIndirect evidence
United Kingdom51-20089

“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, 2026
23London, United Kingdom51-20086

“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, 2026
24
RichterIndirect evidence
Redcar, United Kingdom51-20086

“Engineering Value Together - from incubation, to project realisation.”

Source: company website · checked Sep 3, 2026
25
Will RuddPartial evidence
Glasgow, United Kingdom51-20077

“Will Rudd are Consulting Civil & Structural Engineers with an excellent track record in delivering a quality product.”

Source: company website · checked Sep 3, 2026

Showing 25 of 1,254 geotechnical consulting firms based in the United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 7,279 reachable decision-makers.

Free signup · no credit card

See all 1,254 companies

Geotechnical consulting firms based in the United Kingdom at a glance

As of Sep 3, 2026
1-10Median size (employees)
LondonLargest hub · 139 HQs
1,428Contacts with mobile numbers
Sep 3, 2026Data refreshed

Companies by employee count

1-10
690
11-50
393
51-200
102
201-500
21
501-1,000
5
1,001-5,000
1
5,001-10,000
2

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.

Ready to reach these companies? Verified emails and direct dials for all 1,254 geotechnical consulting firms based in the United Kingdom. Start with a free account, no credit card.

Get the full list

Related lists

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.