Company lists · Data refreshed September 2026

Top 25 Utility infrastructure companies based in the United Kingdom

RevenueBase identified 542 company matches for utility infrastructure companies associated with the United Kingdom as of September 2026 and tracks 42,967 professional contacts across them, including 17,385 with verified work emails. London is the largest hub.

This list covers company matches for utility infrastructure 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
542Companies
42,967Contacts tracked
17,385Verified emails
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The 25 largest utility infrastructure companies based in the United Kingdom

Ranked by team size
Top 25 of 542 company matches for utility infrastructure 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 matchReading, United KingdomHQ recorded Sep 22, 20261,001-5,0005,648 contacts →

Exact match

“Thames Water is the UK’s biggest water and wastewater services provider, providing 2.7 billion litres of drinking water and safely removing 4.6 billion litres of wastewater every…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
2Exact matchCoventry, United KingdomHQ recorded Sep 22, 20265,001-10,0005,563 contacts →

Exact match

“Water is wonderful.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Sep 22, 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 22, 2026 · View company records in RevenueBase
4Exact matchDurham, United KingdomHQ recorded Sep 22, 20261,001-5,0001,629 contacts →

Exact match

“NWG (Northumbrian Water Group) provides water and sewerage services to 2.7 million people in the North East of England as Northumbrian Water, and water services to 1.5 million…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
5Exact matchStockport, United KingdomHQ recorded Sep 22, 20261,001-5,0001,578 contacts →

Exact match

“OCU provides end-to-end infrastructure engineering in the utilities, digital, and energy markets, specialising in safely and efficiently delivering complex client requirements.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
6Exact matchHarefield, United KingdomHQ recorded Sep 22, 20261,001-5,0001,218 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
7Exact matchWembley, United KingdomHQ recorded Sep 22, 20261,001-5,0001,053 contacts →

Exact match

“Established in 1985 to support the emerging UK cable television market, Kelly Group has diversified to meet the needs of our clients.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
8Exact matchWorsley, United KingdomHQ recorded Sep 22, 20265,001-10,000977 contacts →

Exact match

“Network Plus is a leading utility and infrastructure service provider, operating across the UK.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
9Exact matchSevenoaks, United KingdomHQ recorded Sep 22, 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 22, 2026 · View company records in RevenueBase
10Exact matchStevenage, United KingdomHQ recorded Sep 22, 202610001+851 contacts →

Exact match

“M Group | Essential Infrastructure Services for Life It’s an exceptional time to be part of M Group.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
11Exact matchBarnsley, United KingdomHQ recorded Sep 22, 20261,001-5,000845 contacts →

Exact match

“Who are we?”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
12Exact matchChorley, United KingdomHQ recorded Sep 22, 2026501-1,000737 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 · Sep 22, 2026 · View company records in RevenueBase
13Exact matchLeeds, United KingdomHQ recorded Sep 22, 20261,001-5,000664 contacts →

Exact match

“Freedom is a leading provider of facilities and power engineering services.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
14Exact matchWarrington, United KingdomHQ recorded Sep 22, 20261,001-5,000644 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Sep 22, 20261,001-5,000583 contacts →

Exact match

“Aureos is a multi-disciplinary energy, transport networks specialist and engineering services provider, spanning the design, engineering, installation, maintenance, and crisis…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
16Exact matchWoolpit, United KingdomHQ recorded Sep 22, 2026201-500509 contacts →

Exact match

“GTC is the market leading independent utility infrastructure provider to: • National & regional house builders and developers.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
17Exact matchWoolpit, United KingdomHQ recorded Sep 22, 20261,001-5,000504 contacts →

Exact match

“We are BUUK, the UK's leading independent provider of last-mile utility networks.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Sep 22, 20261,001-5,000503 contacts →

Exact match

“Atlantica is a sustainable infrastructure company that owns, manages, develops, builds and invests in renewable energy, storage, efficient natural gas and heat, transmission lines…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
19Exact matchChorley, United KingdomHQ recorded Sep 22, 2026501-1,000440 contacts →

Exact match

“Transforming utilities for communities We are an expert, responsible and agile partner, providing vital services to the UK’s utilities networks.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
20Exact matchAbergavenny, United KingdomHQ recorded Sep 22, 2026201-500412 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 · Sep 22, 2026 · View company records in RevenueBase
21Exact matchUnited KingdomHQ recorded Sep 22, 2026501-1,000396 contacts →

Exact match

“The Energy Assets Group is a leading, nationwide, utilities firm which owns, operates and manages over 1.8 million meter, data and network assets throughout Britain.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
22Exact matchCoatbridge, United KingdomHQ recorded Sep 22, 2026501-1,000337 contacts →

Exact match

“SPL Powerlines UK & I is a leading multi-disciplinary infrastructure specialist, offering end-to-end delivery across both rail and energy sectors with capabilities that set us…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
23Exact matchBamber Bridge, United KingdomHQ recorded Sep 22, 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 22, 2026 · View company records in RevenueBase
24Exact matchLeyland, United KingdomHQ recorded Sep 22, 202610001+306 contacts →

Exact match

“Enterprise was acquired by Amey in 2013, please visit http://ow.ly/KxJYY to view all the latest news and job alerts from Amey.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
25Exact matchCoventry, United KingdomHQ recorded Sep 22, 2026201-500249 contacts →

Exact match

“All Utilities.”

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

Showing 25 of 542 utility infrastructure companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 17,385 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Utility infrastructure companies based in the United Kingdom at a glance

As of Sep 22, 2026
40.5%Verified-email coverage
79.3Average contacts per company
11-50Median size (employees)
10.3%Largest-city concentration · London
Sep 22, 2026Page data refreshed

Companies by employee count

1-10
156
11-50
177
51-200
113
201-500
43
501-1,000
18
1,001-5,000
25
5,001-10,000
3
10001+
3

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 542 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 “utility infrastructure 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 17,385 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 “utility infrastructure companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many utility infrastructure companies are there based in the United Kingdom?

RevenueBase identified 542 company matches for utility infrastructure 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?

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

Which city has the most utility infrastructure companies?

London leads with 56 company records, followed by Manchester (28) and Glasgow (9).

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 17,385 professional contacts with verified work emails tracked across these 542 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.