Company lists · Data refreshed September 2026

Top 25 Hydrology consulting firms based in the United Kingdom

RevenueBase identified 158 company matches for hydrology consulting firms associated with the United Kingdom as of September 2026 and tracks 1,064 professional contacts across them, including 449 with verified work emails and 53 with mobile numbers. London is the largest hub.

This list covers company matches for hydrology consulting firms 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 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 RevenueBase SmartSearch · Exact Recorded Sep 3, 2026 How this list was built
158Companies
1,064Contacts tracked
449Verified emails
53Mobile numbers
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The 25 largest hydrology consulting firms based in the United Kingdom

Ranked by team size
Top 25 of 158 company matches for hydrology consulting firms based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 3, 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 3, 202611-50100 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 3, 2026 · View company records in RevenueBase
2Exact matchRuthin, United KingdomHQ recorded Sep 3, 202611-5059 contacts →

Exact match

“Waterco Datrys is a leading consultancy in water and environmental engineering, formed through the merger of Waterco and Datrys in 2024.”

Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
3Exact matchInverness, United KingdomHQ recorded Sep 3, 202611-5037 contacts →

Exact match

“CBEC eco-engineering is a leading UK environmental consultant specialising in the provision of eco-engineering solutions for the aquatic environment.”

Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
4Exact matchNewbury, United KingdomHQ recorded Sep 3, 202611-5036 contacts →

Exact match

“As a world-leading independent consultancy in oil and gas field water management, our team provides on-site fluid sampling, laboratory analysis, specialty monitoring equipment for…”

Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
5Exact matchShipston On Stour, United KingdomHQ recorded Sep 3, 202611-5032 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 3, 2026 · View company records in RevenueBase
6Exact matchLichfield, United KingdomHQ recorded Sep 3, 202611-5029 contacts →

Exact match

“RAB are dedicated to increasing resilience and reducing flood risk.”

Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Sep 3, 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 3, 2026 · View company records in RevenueBase
8Exact matchHigh Wycombe, United KingdomHQ recorded Sep 3, 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 3, 2026 · View company records in RevenueBase
9Exact matchNewtownabbey, United KingdomHQ recorded Sep 3, 202611-5026 contacts →

Exact match

“McCloy Consulting Limited, a specialist water focussed multidisciplinary with expertise in nature-based solutions, flood risk, geo-environmental, landscape design, ecology…”

Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
10Exact matchPerth, United KingdomHQ recorded Sep 3, 202611-5024 contacts →

Exact match

“Gavia Environmental Ltd is a specialist environmental consultancy based in Perthshire, Scotland, providing ecological and hydrological services.”

Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
11Exact matchMelbourne, United KingdomHQ recorded Sep 3, 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 3, 2026 · View company records in RevenueBase
12Exact matchStanstead Abbotts, United KingdomHQ recorded Sep 3, 202611-5021 contacts →

Exact match

“EAS provides expert advice on transport, flood-risk and infrastructure planning for new development.”

Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
13Exact matchBelfast, United KingdomHQ recorded Sep 3, 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 3, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Sep 3, 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 3, 2026 · View company records in RevenueBase
15Exact matchReading, United KingdomHQ recorded Sep 3, 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 3, 2026 · View company records in RevenueBase
16Exact matchWallingford, United KingdomHQ recorded Sep 3, 202611-5016 contacts →

Exact match

“Wallingford HydroSolutions (WHS) is a vibrant, employee-owned company of dedicated professionals.”

Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
17Exact matchBristol, United KingdomHQ recorded Sep 3, 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 3, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Sep 3, 202611-5013 contacts →

Exact match

“Key Services: Ecology, Air Quality, Flood Risk and Drainage, Transport Planning and Highways, Contaminated Land, Odour, Waste Management, Dust, Lighting Strategy, Daylight and…”

Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
19Exact matchBuxton, United KingdomHQ recorded Sep 3, 202611-5013 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 3, 2026 · View company records in RevenueBase
20Exact matchUnited KingdomHQ recorded Sep 3, 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 3, 2026 · View company records in RevenueBase
21Exact matchEdinburgh, United KingdomHQ recorded Sep 3, 202611-5011 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 3, 2026 · View company records in RevenueBase
22Exact matchNottingham, United KingdomHQ recorded Sep 3, 20261-1011 contacts →

Exact match

“As part of The FPS Group, FPS Environmental Ltd delivers engineering excellence within the flood, water, and environmental sectors.”

Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
23Exact matchLondon, United KingdomHQ recorded Sep 3, 20261-1011 contacts →

Exact match

“We are Consulting Engineers with a wealth of experience in Sustainable Urban Drainage systems, Flood Risk and Consequence Assessments, as well Surface Water Management Schemes.”

Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
24Exact matchStaplefield, United KingdomHQ recorded Sep 3, 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 3, 2026 · View company records in RevenueBase
25Exact matchMusselburgh, United KingdomHQ recorded Sep 3, 202611-509 contacts →

Exact match

“CPE Consultancy is an award-winning consultancy delivering tailored project management and multidisciplinary services to both public and private sector clients.”

Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase

Showing 25 of 158 hydrology consulting firms based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 449 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Hydrology consulting firms based in the United Kingdom at a glance

As of Sep 3, 2026
42.2%Verified-email coverage
5.0%Mobile-number coverage
6.7Average contacts per company
1-10Median size (employees)
8.9%Largest-city concentration · London
Sep 3, 2026Page data refreshed

Companies by employee count

1-10
95
11-50
48
51-200
3
201-500
3

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

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 “hydrology consulting firms” 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 449 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 3, 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 “hydrology consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many hydrology consulting firms are there based in the United Kingdom?

RevenueBase identified 158 company matches for hydrology consulting firms 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 hydrology consulting firms?

London leads with 14 company records, followed by Shrewsbury (4) and Bristol (4).

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 449 professional contacts with verified work emails tracked across these 158 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 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.