Company lists · Data refreshed September 2026

Top 25 Site assessment companies based in the United Kingdom

RevenueBase identified 469 company matches for site assessment companies associated with the United Kingdom as of September 2026 and tracks 12,306 professional contacts across them, including 3,730 with verified work emails. London is the largest hub.

This list covers company matches for site assessment 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 22, 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 22, 2026 How this list was built
469Companies
12,306Contacts tracked
3,730Verified emails
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The 25 largest site assessment companies based in the United Kingdom

Ranked by team size
Top 25 of 469 company matches for site assessment companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 22, 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 matchLondon, United KingdomHQ recorded Sep 22, 20265,001-10,0003,960 contacts →

Exact match

“Every day, people around the world live, work and play on ground prepared by Keller, the world's largest geotechnical specialist contractor.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
2Exact matchSkelmersdale, United KingdomHQ recorded Sep 22, 2026n/a1,837 contacts →

Exact match

“Established in 1986, SEP has been the industry’s leader for site engineering, surveying and management solutions for over thirty years, providing vital services, resources and…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
3Exact matchGlasgow, United KingdomHQ recorded Sep 22, 2026201-500437 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
4Exact matchHertfordshire, United KingdomHQ recorded Sep 22, 2026201-500218 contacts →

Exact match

“Founded in 2003, Normec i2 Analytical is one of Europe's leading environmental testing companies providing its customers a comprehensive range of analytical, monitoring and…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
5Exact matchHarpenden, United KingdomHQ recorded Sep 22, 2026201-500204 contacts →

Exact match

“Property Development & Consultancy • Property Investment & Management • Rail & Infrastructure Surveys • Structural & Environmental Monitoring • Utilities Tracing & Mapping •…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
6Exact matchGloucester, United KingdomHQ recorded Sep 22, 202651-200187 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
7Exact matchGateshead, United KingdomHQ recorded Sep 22, 2026501-1,000162 contacts →

Exact match

“We're not just service providers; we're your long-term partners in creating a sustainable, compliant, and efficient future for your assets.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
8Exact matchDurham, United KingdomHQ recorded Sep 22, 2026201-500156 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
9Exact matchBristol, United KingdomHQ recorded Sep 22, 2026201-500137 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
10Exact matchLondon, United KingdomHQ recorded Sep 22, 202651-200110 contacts →

Exact match

“Walsh is a B Corp Certified structural, civil and geotechnical engineering consultancy specialising in complex developments on constrained urban sites.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
11Exact matchCoventry, United KingdomHQ recorded Sep 22, 202651-20095 contacts →

Exact match

“Founded in 1983, Geotechnics Limited is now one of the largest independent geotechnical specialists in the UK.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
12Exact matchPoole, United KingdomHQ recorded Sep 22, 202651-20090 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
13Exact matchHarrogate, United KingdomHQ recorded Sep 22, 202651-20086 contacts →

Exact match

“CGL is a leading specialist geotechnical consultancy and has a reputation for solving difficult technical problems with value engineering in construction projects.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
14Exact matchMarlow, United KingdomHQ recorded Sep 22, 202651-20085 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
15Exact matchDurham, United KingdomHQ recorded Sep 22, 202651-20077 contacts →

Exact match

“Dunelm has 50 years’ experience as leaders in the field of ground investigation, providing site investigation services on a national scale at competitive prices.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
16Exact matchSheffield, United KingdomHQ recorded Sep 22, 202651-20075 contacts →

Exact match

“Eastwood Consulting Engineers are recognised as a leading Engineering Consultancy specialising in Civil, Structural, Geotechnical and Geo-environmental Engineering.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
17Exact matchCoventry, United KingdomHQ recorded Sep 22, 202651-20070 contacts →

Exact match

“Concept is a fresh, innovative and dynamic specialist site investigation company established in 1997.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
18Exact matchNottingham, United KingdomHQ recorded Sep 22, 202651-20062 contacts →

Exact match

“Welcome to Hexa.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
19Exact matchBallymoney, United KingdomHQ recorded Sep 22, 202651-20060 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
20Exact matchGloucester, United KingdomHQ recorded Sep 22, 202651-20060 contacts →

Exact match

“CC Ground Investigations specialise in undertaking all types of geotechnical and environmental site investigation work throughout the U.K.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
21Exact matchHugglescote, United KingdomHQ recorded Sep 22, 202611-5058 contacts →

Exact match

“MEC is a multidisciplinary development technical consultant operating nationwide from offices in Birmingham, Brighton and Leicester.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
22Exact matchOssett, United KingdomHQ recorded Sep 22, 2026201-50058 contacts →

Exact match

“Stroma Built Environment supports the construction industry with Air, Acoustics, Energy and Environmental services from pre-planning through build and into occupancy.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
23Exact matchWashington, United KingdomHQ recorded Sep 22, 202651-20054 contacts →

Exact match

“Ian Farmer Associates has been carrying out ground investigations since 1985 and has built a strong client base of consulting engineers, builders, developers, architects…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
24Exact matchHitchin, United KingdomHQ recorded Sep 22, 202651-20054 contacts →

Exact match

“Construction Materials Testing Laboratories is a leading specialist in delivering high-quality geotechnical testing of construction and civil engineering materials.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
25Exact matchIdle, United KingdomHQ recorded Sep 22, 202651-20047 contacts →

Exact match

“Geo2 is a team of environmental transaction, water, land quality, geotechnical and remediation specialists, based in Bradford, Manchester, Newark, Crawley and Peru, delivering…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase

Showing 25 of 469 site assessment companies based in the United Kingdom

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Site assessment companies based in the United Kingdom at a glance

As of Sep 22, 2026
30.3%Verified-email coverage
26.2Average contacts per company
1-10Median size (employees)
7.9%Largest-city concentration · London
Sep 22, 2026Page data refreshed

Companies by employee count

1-10
269
11-50
141
51-200
37
201-500
14
501-1,000
2
5,001-10,000
2

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 469 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 “site assessment 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 3,730 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 22, 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 “site assessment companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many site assessment companies are there based in the United Kingdom?

RevenueBase identified 469 company matches for site assessment 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?

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

Which city has the most site assessment companies?

London leads with 37 company records, followed by Manchester (10) and Nottingham (10).

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 3,730 professional contacts with verified work emails tracked across these 469 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 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 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.