Company lists · Data refreshed September 2026

Top 25 Hydrological survey companies based in the United Kingdom

RevenueBase identified 133 company matches for hydrological survey companies associated with the United Kingdom as of September 2026 and tracks 1,264 professional contacts across them, including 556 with verified work emails. London is the largest hub.

This list covers company matches for hydrological survey 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
133Companies
1,264Contacts tracked
556Verified emails
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The 25 largest hydrological survey companies based in the United Kingdom

Ranked by team size
Top 25 of 133 company matches for hydrological survey 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 matchLondon, United KingdomHQ recorded Sep 20, 202611-50103 contacts →

Exact match

“Established in the UK in 1986, MRAG Ltd is a consultancy company dedicated to promoting sustainable use of aquatic resources through sound integrated management policies and…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2Exact matchBordon, United KingdomHQ recorded Sep 20, 202651-20074 contacts →

Exact match

“EGS International Ltd (EGSi) is part of a leading international group of companies specialising in marine surveys.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3Exact matchTotnes, United KingdomHQ recorded Sep 20, 202651-20043 contacts →

Exact match

“Valeport is an independently owned manufacturer of Oceanographic & Hydrometric Equipment and Instrumentation.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4Exact matchShipston On Stour, United KingdomHQ recorded Sep 20, 202611-5031 contacts →

Exact match

“Measurement experts who use innovation to understand river functions and provide knowledge to inform projects that reduce flooding and improve natural habitats.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5Exact matchLondon, United KingdomHQ recorded Sep 20, 202611-5028 contacts →

Exact match

“Aegaea provides expertise in water, civils and environment including discharge of conditions for outline and full planning.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6Exact matchHigh Wycombe, United KingdomHQ recorded Sep 20, 20261-1028 contacts →

Exact match

“Irrigation Engineers Ltd is a consultancy with international experience having worked throughout Europe, Africa, the Middle East and Asia.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7Exact matchChurch Stretton, United KingdomHQ recorded Sep 20, 202611-5027 contacts →

Exact match

“Established in 2004, LandScope Engineering has become one of the leading survey companies in the UK specialising in integrated survey solutions above ground, below ground and…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8Exact matchIrvine, United KingdomHQ recorded Sep 20, 202611-5027 contacts →

Exact match

“Aspect Land & Hydrographic Surveys Ltd are one of the UK’s leading independent coastal survey companies, with extensive experience and a proven track record in providing…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9Exact matchLeeds, United KingdomHQ recorded Sep 20, 202651-20026 contacts →

Exact match

“40SEVEN are one of the UK’s largest surveying companies and with three offices are able to offer genuine nationwide coverage.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10Exact matchMelbourne, United KingdomHQ recorded Sep 20, 202611-5021 contacts →

Exact match

“Envireau Water is one of the UK's leading independent consultancies specialising in water management and environmental regulation.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11Exact matchBelfast, United KingdomHQ recorded Sep 20, 202611-5018 contacts →

Exact match

“Office Locations Belfast Based Consultancy Firm About Us MCL Consulting always operate as a team.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12Exact matchSurbiton, United KingdomHQ recorded Sep 20, 202611-5017 contacts →

Exact match

“Water Environment Limited provides technical consulting services, specific to the water and environmental sectors of engineering.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchHadnall, United KingdomHQ recorded Sep 20, 202611-5017 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14Exact matchReading, United KingdomHQ recorded Sep 20, 2026201-50016 contacts →

Exact match

“Hydro International, a CRH Company, provides advanced products, services and expertise to help municipal, industrial and construction customers to improve their water management…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15Exact matchBristol, United KingdomHQ recorded Sep 20, 202611-5015 contacts →

Exact match

“Edenvale Young is a Civil Engineering and Scientific Consultancy specialising in the fluvial, coastal and maritime environment.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16Exact matchDurham, United KingdomHQ recorded Sep 20, 202611-5014 contacts →

Exact match

“OGI has more than 30 years of experience in providing groundwater related services to clients and contractors in the United Kingdom and abroad.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17Exact matchBuxton, United KingdomHQ recorded Sep 20, 202611-5014 contacts →

Exact match

“Penny Anderson Associates has provided expert advice on ecology, hydrology and sustainable land management since the 1970s and has built up a reputation for professional integrity…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18Exact matchEdinburgh, United KingdomHQ recorded Sep 20, 202611-5012 contacts →

Exact match

“Caley Water is a water and environmental consultancy that offers a range of specialist hydraulic modelling, data survey management and civil engineering design services.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19Exact matchEdinburgh, United KingdomHQ recorded Sep 20, 202611-5012 contacts →

Exact match

“Gondolin Land & Water Ltd is a growing Environmental and Civil Engineering Consultancy business based in Scotland with coverage throughout England, Scotland and Ireland.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20Exact matchStaplefield, United KingdomHQ recorded Sep 20, 202611-5010 contacts →

Exact match

“Richard Allitt Associates is a leading provider of hydraulic engineering and flood risk consultancy for the urban drainage industry.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21Exact matchHayle, United KingdomHQ recorded Sep 20, 202611-5010 contacts →

Exact match

“Ultrabeam is a multi-award-winning company specialising in high-definition marine survey and asset inspection.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22Exact matchInverness, United KingdomHQ recorded Sep 20, 202611-5010 contacts →

Exact match

“Caintech Ltd was first established in August 1988 and worked solely within the offshore Oil sector until May 2005 when we expanded into construction, land and hydrographic…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23Exact matchPenryn, United KingdomHQ recorded Sep 20, 20261-1010 contacts →

Exact match

“CMS began with a simple mission: to provide the marine industry with precise and dependable data that builds confidence from the seabed up.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24Exact matchTattenhall, United KingdomHQ recorded Sep 20, 20261-109 contacts →

Exact match

“Hydrofix specialises in providing full project lifecycle hydrographic and geophysical support services to the offshore construction industry and service support providers.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25Exact matchInverurie, United KingdomHQ recorded Sep 20, 20261-109 contacts →

Exact match

“Established in 2020, Ocean Phoenix International Ltd is a specialist Marine and Hydrographic Survey support company which has been set up by Offshore Industry veteran Peter…”

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

Showing 25 of 133 hydrological survey companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 556 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Hydrological survey companies based in the United Kingdom at a glance

As of Sep 20, 2026
44.0%Verified-email coverage
9.5Average contacts per company
1-10Median size (employees)
5.3%Largest-city concentration · London
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
86
11-50
39
51-200
3
201-500
4

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 133 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 “hydrological survey 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 556 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 “hydrological survey companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many hydrological survey companies are there based in the United Kingdom?

RevenueBase identified 133 company matches for hydrological survey 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?

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

Which city has the most hydrological survey companies?

London leads with 7 company records, followed by Wallingford (5) and Belfast (3).

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 556 professional contacts with verified work emails tracked across these 133 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.