Company lists · Data refreshed September 2026

Top 25 Utility infrastructure contractors based in the United Kingdom

Name: Utility infrastructure contractors based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 578 companies tracked

RevenueBase identified 578 utility infrastructure contractors headquartered in the United Kingdom as of September 2026 and tracks 23,515 professional contacts across them, including 9,174 with verified work emails. London is the largest hub.

This list covers utility infrastructure contractors headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

578Companies

23,515Contacts tracked

9,174Verified emails

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The 25 largest utility infrastructure contractors based in the United Kingdom

Ranked by team size

Top 25 of 578 utility infrastructure contractors based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to utility infrastructure contractors: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Murphy	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	1,001-5,000	3,095 contacts →
	Partial evidence “Murphy is a leading international, multi-disciplined engineering and construction company founded in 1951 that improves life by delivering world-class infrastructure.” Source: RevenueBase Database · checked Sep 19, 2026
2	Clancy	Indirect evidence	Harefield, United KingdomHQ checked Sep 19, 2026	1,001-5,000	1,218 contacts →
	Indirect evidence “The Clancy Group was founded in 1958 by Michael Clancy as M.J.” Source: RevenueBase Database · checked Sep 19, 2026
3	Network Plus	Strong evidence	Worsley, United KingdomHQ checked Sep 19, 2026	5,001-10,000	977 contacts →
	Strong evidence “Network Plus is a leading utility and infrastructure service provider, operating across the UK.” Source: RevenueBase Database · checked Sep 19, 2026
4	FM Conway LTD	Partial evidence	Sevenoaks, United KingdomHQ checked Sep 19, 2026	1,001-5,000	974 contacts →
	Partial evidence “FM Conway is a leading infrastructure services company delivering vital services in transportation, the built environment and open spaces for communities and businesses.” Source: RevenueBase Database · checked Sep 19, 2026
5	MWH Treatment	Partial evidence	Stockport, United KingdomHQ checked Sep 19, 2026	1,001-5,000	879 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 19, 2026
6	M Group	Partial evidence	Stevenage, United KingdomHQ checked Sep 19, 2026	10001+	851 contacts →
	Partial evidence “M Group \| Essential Infrastructure Services for Life It’s an exceptional time to be part of M Group.” Source: RevenueBase Database · checked Sep 19, 2026
7	Amcogiffen	Indirect evidence	Barnsley, United KingdomHQ checked Sep 19, 2026	1,001-5,000	845 contacts →
	Indirect evidence “Who are we?” Source: RevenueBase Database · checked Sep 19, 2026
8	IPSUM	Indirect evidence	Chorley, United KingdomHQ checked Sep 19, 2026	501-1,000	737 contacts →
	Indirect evidence “At Ipsum, we provide specialist engineering services across the UK’s regulated water and energy companies and private sector businesses.” Source: RevenueBase Database · checked Sep 19, 2026
9	United Living Group	Indirect evidence	Warrington, United KingdomHQ checked Sep 19, 2026	1,001-5,000	644 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
10	Aureos	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	1,001-5,000	583 contacts →
	Indirect evidence “Aureos is a multi-disciplinary energy, transport networks specialist and engineering services provider, spanning the design, engineering, installation, maintenance, and crisis…” Source: RevenueBase Database · checked Sep 19, 2026
11	GTC	Strong evidence	Woolpit, United KingdomHQ checked Sep 19, 2026	201-500	509 contacts →
	Strong evidence “GTC is the market leading independent utility infrastructure provider to: • National & regional house builders and developers.” Source: RevenueBase Database · checked Sep 19, 2026
12	Avove Utilities	Partial evidence	Chorley, United KingdomHQ checked Sep 19, 2026	501-1,000	440 contacts →
	Partial evidence “Transforming utilities for communities We are an expert, responsible and agile partner, providing vital services to the UK’s utilities networks.” Source: RevenueBase Database · checked Sep 19, 2026
13	Alun Griffiths Contractors LTD	Strong evidence	Abergavenny, United KingdomHQ checked Sep 19, 2026	201-500	412 contacts →
	Strong evidence “Welcome to / Croeso i Griffiths We are a sustainable civil engineering contractor that helps connect communities through road, rail, water, and utilities.” Source: RevenueBase Database · checked Sep 19, 2026
14	Sapphire Utility Solutions LTD	Partial evidence	Bamber Bridge, United KingdomHQ checked Sep 19, 2026	1,001-5,000	324 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
15	Enterprise PLC	Indirect evidence	Leyland, United KingdomHQ checked Sep 19, 2026	10001+	306 contacts →
	Indirect evidence “Enterprise was acquired by Amey in 2013, please visit http://ow.ly/KxJYY to view all the latest news and job alerts from Amey.” Source: RevenueBase Database · checked Sep 19, 2026
16	Power On	Partial evidence	Coventry, United KingdomHQ checked Sep 19, 2026	201-500	249 contacts →
	Partial evidence “All Utilities.” Source: RevenueBase Database · checked Sep 19, 2026
17	Mcnicholas	Partial evidence	Elstree, United KingdomHQ checked Sep 19, 2026	1,001-5,000	242 contacts →
	Partial evidence “McNicholas, part of the Kier Group, is a leading provider of services to the UK’s multi-utility, telecommunications, gas, power, water, renewable energy, and rail sectors.” Source: RevenueBase Database · checked Sep 19, 2026
18	UKPS	Indirect evidence	Stonehouse, United KingdomHQ checked Sep 19, 2026	501-1,000	236 contacts →
	Indirect evidence “UKPS now operating as Last Mile across Great Britain We’re excited to announce that from 16th March 2026, UKPS is formally adopting the Last Mile name.” Source: RevenueBase Database · checked Sep 19, 2026
19	Eric Wright Water LTD	Indirect evidence	Preston, United KingdomHQ checked Sep 19, 2026	201-500	193 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 19, 2026
20	Cappagh Group Of Companies	Indirect evidence	Wimbledon, United KingdomHQ checked Sep 19, 2026	501-1,000	193 contacts →
	Indirect evidence “You have probably benefitted from a service we have helped fix, build or maintain if you live or have visited the southern region of the UK.” Source: RevenueBase Database · checked Sep 19, 2026
21	IQA Elecnor	Strong evidence	Glasgow, United KingdomHQ checked Sep 19, 2026	201-500	184 contacts →
	Strong evidence “IQA lead the way in designing, building, maintaining, and upgrading electrical utility networks, telecommunication networks, EVCP and electrical infrastructure for both the public…” Source: RevenueBase Database · checked Sep 19, 2026
22	Onsite Central Limited	Indirect evidence	Worcester, United KingdomHQ checked Sep 19, 2026	201-500	178 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
23	Triconnex Limited	Partial evidence	Braintree, United KingdomHQ checked Sep 19, 2026	201-500	158 contacts →
	Partial evidence “TriConnex are a leading provider of multi-utility services, working with residential housebuilders to connect Electricity, Water, Waste, and Fibre to their developments.” Source: RevenueBase Database · checked Sep 19, 2026
24	Bethell Group	Partial evidence	Manchester, United KingdomHQ checked Sep 19, 2026	201-500	151 contacts →
	Partial evidence “Established in 1865, Bethell is a leading privately-owned construction and utility services company based in Manchester that provides its clients with solutions in the Civil…” Source: RevenueBase Database · checked Sep 19, 2026
25	Ferns Group	Strong evidence	West Farleigh, United KingdomHQ checked Sep 19, 2026	501-1,000	147 contacts →
	Strong evidence “Ferns is one of the largest independent utility infrastructure services providers in the south of the UK.” Source: RevenueBase Database · checked Sep 19, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: utility infrastructure contractors. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names utility infrastructure contractors.
Partial evidence: Its own public description names part of utility infrastructure contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name utility infrastructure contractors. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 578 utility infrastructure contractors based in the United Kingdom

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Utility infrastructure contractors based in the United Kingdom at a glance

As of Sep 19, 2026

39.0%Verified-email coverage

40.7Average contacts per company

11-50Median size (employees)

8.3%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

172

11-50

217

51-200

107

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 578 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among utility infrastructure contractors, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United Kingdom whose own description of what they do matches “utility infrastructure contractors”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names utility infrastructure contractors), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among utility infrastructure contractors, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 9,174 across the full list. 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.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Utility infrastructure contractors by metro

Utility infrastructure contractors in London48
Utility infrastructure contractors in Manchester29

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names utility infrastructure contractors, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

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

RevenueBase identified 578 utility infrastructure contractors headquartered in the United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Murphy, headquartered in London, tops this list with the largest team on record.

Which city has the most utility infrastructure contractors?

London leads with 48 headquartered companies, followed by Manchester (29) and Warrington (11).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 9,174 verified decision-maker contacts tracked across these 578 companies.

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.

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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 Smart Search, 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.