Company lists · Data refreshed October 2026

Top 25 Civil engineering contractors for water infrastructure based in the United Kingdom

RevenueBase identified 2,090 company matches for civil engineering contractors for water infrastructure associated with the United Kingdom as of October 2026 and tracks 59,256 professional contacts across them, including 21,494 with verified work emails. London is the largest hub.

This list covers company matches for civil engineering contractors for water infrastructure 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 October 9, 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 Oct 9, 2026 How this list was built
2,090Companies
59,256Contacts tracked
21,494Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest civil engineering contractors for water infrastructure based in the United Kingdom

Ranked by team size
Top 25 of 2,090 company matches for civil engineering contractors for water infrastructure based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 9, 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 Oct 9, 20261,001-5,0003,897 contacts →

Exact match

“Costain helps to improve people’s lives by creating connected, sustainable infrastructure that enables people and the planet thrive.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
2Exact matchUxbridge, United KingdomHQ recorded Oct 9, 20261,001-5,0003,314 contacts →

Exact match

“Galliford Try is a leading UK contractor, and a member of the FTSE 250, passionate about providing high quality buildings and infrastructure for communities across the nation.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Oct 9, 20261,001-5,0003,280 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 · Oct 9, 2026 · View company records in RevenueBase
4Exact matchHarefield, United KingdomHQ recorded Oct 9, 20261,001-5,0001,290 contacts →

Exact match

“The Clancy Group was founded in 1958 by Michael Clancy as M.J.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
5Exact matchLeeds, United KingdomHQ recorded Oct 9, 20261,001-5,0001,288 contacts →

Exact match

“Lanes Group is a leading provider of specialist drainage, utility, and asset maintenance services.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Oct 9, 20261,001-5,0001,069 contacts →

Exact match

“Keltbray is a UK leading specialist engineering contractor, which offers engineering, construction, demolition, decommissioning, remediation, environmental services and reinforced…”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
7Exact matchSevenoaks, United KingdomHQ recorded Oct 9, 20261,001-5,000997 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 · Oct 9, 2026 · View company records in RevenueBase
8Exact matchStockport, United KingdomHQ recorded Oct 9, 20261,001-5,000930 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 · Oct 9, 2026 · View company records in RevenueBase
9Exact matchHoddesdon, United KingdomHQ recorded Oct 9, 20261,001-5,000914 contacts →

Exact match

“VolkerFitzpatrick is a multi-disciplinary contractor working in the civil engineering, building, rail, waste and energy infrastructure sectors.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
10Exact matchRedhill, United KingdomHQ recorded Oct 9, 2026501-1,000891 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 · Oct 9, 2026 · View company records in RevenueBase
11Exact matchBarnsley, United KingdomHQ recorded Oct 9, 20261,001-5,000853 contacts →

Exact match

“Who are we?”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
12Exact matchWalsall, United KingdomHQ recorded Oct 9, 20261,001-5,000853 contacts →

Exact match

“Barhale was formed in 1980 as a specialist tunnelling contractor and grew initially through the successful delivery of projects in the water sector, developing mechanical and…”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
13Exact matchChorley, United KingdomHQ recorded Oct 9, 2026501-1,000801 contacts →

Exact match

“At Ipsum, we provide specialist engineering services across the UK’s regulated water and energy companies and private sector businesses.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
14Exact matchWatford, United KingdomHQ recorded Oct 9, 2026501-1,000702 contacts →

Exact match

“Engineering sustainable infrastructure for today and tomorrow.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
15Exact matchBelfast, United KingdomHQ recorded Oct 9, 2026501-1,000579 contacts →

Exact match

“Farrans is a leading civil engineering and building contractor which specialises in innovative and sustainable solutions for the water, energy, aviation, transportation, marine…”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
16Exact matchSolihull, United KingdomHQ recorded Oct 9, 2026501-1,000567 contacts →

Exact match

“MV Kelly is an award-winning civil engineering and building contractor, trusted across the UK for delivering high-quality infrastructure, groundworks, and associated building…”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
17Exact matchAldridge, United KingdomHQ recorded Oct 9, 2026201-500561 contacts →

Exact match

“M&J Evans Construction Ltd, one of the largest groundworks and civil engineering business has been based in the West Midlands since 2003.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
18Exact matchPreston, United KingdomHQ recorded Oct 9, 2026501-1,000543 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 · Oct 9, 2026 · View company records in RevenueBase
19Exact matchStanford-le-hope, United KingdomHQ recorded Oct 9, 2026501-1,000510 contacts →

Exact match

“Joseph Gallagher is one of the UK's leading Civil Engineering & Tunnelling sub-contractors that has significantly grown over the past 45 years into an international business.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
20Exact matchStrathaven, United KingdomHQ recorded Oct 9, 2026501-1,000460 contacts →

Exact match

“QTS is one of the country’s leading railways contractors, founded by MD, Alan McLeish.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
21Exact matchAbergavenny, United KingdomHQ recorded Oct 9, 2026201-500414 contacts →

Exact match

“Welcome to / Croeso i Griffiths We are a sustainable civil engineering contractor that helps connect communities through road, rail, water, and utilities.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
22Exact matchFareham, United KingdomHQ recorded Oct 9, 202651-200390 contacts →

Exact match

“Boskalis Westminster Ltd (BWL) is the leading dredging contractor in the UK and Ireland.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
23Exact matchGlasgow, United KingdomHQ recorded Oct 9, 2026201-500375 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
24Exact matchBamber Bridge, United KingdomHQ recorded Oct 9, 20261,001-5,000333 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 · Oct 9, 2026 · View company records in RevenueBase
25Exact matchIpswich, United KingdomHQ recorded Oct 9, 2026201-500321 contacts →

Exact match

“Jackson is a straight-talking no nonsense Civil Engineering Contractor.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase

Showing 25 of 2,090 civil engineering contractors for water infrastructure based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 21,494 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Civil engineering contractors for water infrastructure based in the United Kingdom at a glance

As of Oct 9, 2026
36.3%Verified-email coverage
28.4Average contacts per company
11-50Median size (employees)
7.5%Largest-city concentration · London
Oct 9, 2026Page data refreshed

Companies by employee count

1-10
786
11-50
746
51-200
378
201-500
96
501-1,000
30
1,001-5,000
27
5,001-10,000
3
10001+
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 2,090 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 “civil engineering contractors for water infrastructure” 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 21,494 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 October 9, 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 “civil engineering contractors for water infrastructure”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many civil engineering contractors for water infrastructure are there based in the United Kingdom?

RevenueBase identified 2,090 company matches for civil engineering contractors for water infrastructure associated with the United Kingdom as of October 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?

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

Which city has the most civil engineering contractors for water infrastructure?

London leads with 156 company records, followed by Manchester (38) and Glasgow (34).

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 21,494 professional contacts with verified work emails tracked across these 2,090 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 October 9, 2026.

Ready to reach these companies? Verified emails and direct dials for all 2,090 civil engineering contractors for water infrastructure based in the United Kingdom. Start with a free account, no credit card.

Download this 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.