Company lists · Data refreshed September 2026

Top 25 Water infrastructure engineering firms based in the United Kingdom

RevenueBase identified 760 company matches for water infrastructure engineering firms associated with the United Kingdom as of September 2026 and tracks 19,486 professional contacts across them, including 7,751 with verified work emails. London is the largest hub.

This list covers company matches for water infrastructure engineering 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 19, 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 19, 2026 How this list was built
760Companies
19,486Contacts tracked
7,751Verified emails
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The 25 largest water infrastructure engineering firms based in the United Kingdom

Ranked by team size
Top 25 of 760 company matches for water infrastructure engineering firms based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 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 19, 20261,001-5,0003,095 contacts →

Exact match

“Murphy is a leading international, multi-disciplined engineering and construction company founded in 1951 that improves life by delivering world-class infrastructure.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Sep 19, 20261,001-5,0001,194 contacts →

Exact match

“Faithful+Gould is now AtkinsRéalis.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3Exact matchSevenoaks, United KingdomHQ recorded Sep 19, 20261,001-5,000974 contacts →

Exact match

“FM Conway is a leading infrastructure services company delivering vital services in transportation, the built environment and open spaces for communities and businesses.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4Exact matchStockport, United KingdomHQ recorded Sep 19, 20261,001-5,000879 contacts →

Exact match

“MWH Treatment is a leading Design and Build non-infrastructure solution provider in the UK water sector, with a water sector heritage dating back to 1820.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5Exact matchRedhill, United KingdomHQ recorded Sep 19, 2026501-1,000842 contacts →

Exact match

“Together with our strategic partners, we can address everything from supporting vulnerable customers, water quality, asset performance and leak detection, to integrated planning…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6Exact matchPreston, United KingdomHQ recorded Sep 19, 2026501-1,000509 contacts →

Exact match

“As part of the €6.6 billion VolkerWessels group, VolkerStevin provides complex engineering solutions to the water, energy, marine infrastructure, flood and coastal protection…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7Exact matchGlasgow, United KingdomHQ recorded Sep 19, 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 19, 2026 · View company records in RevenueBase
8Exact matchGlasgow, United KingdomHQ recorded Sep 19, 2026201-500329 contacts →

Exact match

“A self-delivery design and build partner supplying sustainable solutions to the water sector.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9Exact matchBamber Bridge, United KingdomHQ recorded Sep 19, 20261,001-5,000324 contacts →

Exact match

“Sapphire Utility Solutions has quickly become a trusted name in the utility, transport and highways sectors, known for our capabilities in delivering innovative solutions to meet…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10Exact matchPreston, United KingdomHQ recorded Sep 19, 2026201-500193 contacts →

Exact match

“Eric Wright Water Ltd (part of the Eric Wright Group) is a multi-disciplinary engineering and construction company working in the water and wastewater industry.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Sep 19, 2026201-500190 contacts →

Exact match

“Project Centre, part of Marston Holdings, is a multidisciplinary infrastructure and place consultancy shaping sustainable spaces across the UK.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12Exact matchWorcester, United KingdomHQ recorded Sep 19, 2026201-500178 contacts →

Exact match

“Originally established in 1977, OnSite is a South Staffordshire Group owned company that has grown through strategic acquisition and organic expansion to become one of the UK's…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13Exact matchSurrey, United KingdomHQ recorded Sep 19, 2026501-1,000178 contacts →

Exact match

“Biwater is a world leader in treated water, providing large-scale water and wastewater solutions for clients across the world.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14Exact matchGlasgow, United KingdomHQ recorded Sep 19, 2026201-500172 contacts →

Exact match

“RJ McLeod stands as one of the country’s leading civil engineering and building contractors.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15Exact matchClevedon, United KingdomHQ recorded Sep 19, 2026201-500166 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 19, 2026 · View company records in RevenueBase
16Exact matchAmersham, United KingdomHQ recorded Sep 19, 202651-200166 contacts →

Exact match

“With over 40 years experience JNP Group deliver highly professional, integrated efficient design and consultancy solutions from inception to completion, irrespective of project…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Sep 19, 202651-200150 contacts →

Exact match

“Rendel celebrated its 185th Anniversary in 2024, making us one of the oldest civil and structural engineering companies in the UK.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18Exact matchCoventry, United KingdomHQ recorded Sep 19, 20261,001-5,000137 contacts →

Exact match

“Severn Trent Services offer a range of services to municipal and industrial clients, including the Ministry of Defence and the Coal Authority, for design, build and operation of…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19Exact matchCardiff Road, United KingdomHQ recorded Sep 19, 2026201-500136 contacts →

Exact match

“We’re envolve, specialist civil engineers.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20Exact matchHemel Hempstead, United KingdomHQ recorded Sep 19, 20261,001-5,000117 contacts →

Exact match

“Browne is a full-service utilities and infrastructure engineering partner, delivering smart, sustainable solutions across the UK and Ireland.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21Exact matchSmall Dole, United KingdomHQ recorded Sep 19, 202651-200116 contacts →

Exact match

“Mackley provides a comprehensive range of services from conception through construction to project delivery.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22Exact matchBirmingham, United KingdomHQ recorded Sep 19, 202651-200113 contacts →

Exact match

“Enpure is a process engineering company specializing in water, wastewater and sludge treatment as well as waste-to-energy solutions with a global presence.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23Exact matchKettering, United KingdomHQ recorded Sep 19, 202651-200112 contacts →

Exact match

“AWMS, part of Alumasc Group, is the first joined-up brand in integrated water management.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24Exact matchLondon, United KingdomHQ recorded Sep 19, 202610001+110 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25Exact matchGuildford, United KingdomHQ recorded Sep 19, 2026201-500109 contacts →

Exact match

“Land + Water is more than just a dredging company.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

Showing 25 of 760 water infrastructure engineering firms based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 7,751 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Water infrastructure engineering firms based in the United Kingdom at a glance

As of Sep 19, 2026
39.8%Verified-email coverage
25.6Average contacts per company
11-50Median size (employees)
8.9%Largest-city concentration · London
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
347
11-50
255
51-200
103
201-500
30
501-1,000
8
1,001-5,000
13
10001+
1

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 760 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 “water infrastructure engineering 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 7,751 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 19, 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 “water infrastructure engineering firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many water infrastructure engineering firms are there based in the United Kingdom?

RevenueBase identified 760 company matches for water infrastructure engineering 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?

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

Which city has the most water infrastructure engineering firms?

London leads with 68 company records, followed by Manchester (16) and Glasgow (13).

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 7,751 professional contacts with verified work emails tracked across these 760 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 19, 2026.

Ready to reach these companies? Verified emails and direct dials for all 760 water infrastructure engineering firms based in the United Kingdom. Start with a free account, no credit card.

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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.