Company lists · Data refreshed September 2026

Top 25 Energy infrastructure contractors based in the United Kingdom

Name: Energy 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 16, 2026 582 companies tracked

RevenueBase identified 582 energy infrastructure contractors headquartered in the United Kingdom as of September 2026 and tracks 46,606 professional contacts across them, including 12,981 with verified work emails. London is the largest hub.

This list covers energy 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 16, 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 16, 2026 86% judged on-target in blind review

582Companies

46,606Contacts tracked

12,981Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest energy infrastructure contractors based in the United Kingdom

Ranked by team size

Top 25 of 582 energy infrastructure contractors based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to energy 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	Petrofac	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	5,001-10,000	13,261 contacts →
	Partial evidence “We are a leading international service provider to the energy industry, with a diverse client portfolio including many of the world’s leading energy companies.” Source: RevenueBase Database · checked Sep 16, 2026
2	Atkins	Indirect evidence	Epsom, United KingdomHQ checked Sep 16, 2026	10001+	9,297 contacts →
	Indirect evidence “Atkins is now AtkinsRéalis.” Source: RevenueBase Database · checked Sep 16, 2026
3	Murphy	Partial evidence	London, United KingdomHQ checked Sep 16, 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 16, 2026
4	Bilfinger UK	Indirect evidence	Warrington, United KingdomHQ checked Sep 16, 2026	1,001-5,000	2,052 contacts →
	Indirect evidence “With a strong commitment to sustainability, Bilfinger UK stands out as a premier provider of engineering and maintenance services.” Source: RevenueBase Database · checked Sep 16, 2026
5	OCU	Strong evidence	Stockport, United KingdomHQ checked Sep 16, 2026	1,001-5,000	1,578 contacts →
	Strong evidence “OCU provides end-to-end infrastructure engineering in the utilities, digital, and energy markets, specialising in safely and efficiently delivering complex client requirements.” Source: RevenueBase Database · checked Sep 16, 2026
6	Faithful Gould	Indirect evidence	London, United KingdomHQ checked Sep 16, 2026	1,001-5,000	1,194 contacts →
	Indirect evidence “Faithful+Gould is now AtkinsRéalis.” Source: RevenueBase Database · checked Sep 16, 2026
7	Penspen	Strong evidence	London, United KingdomHQ checked Sep 16, 2026	1,001-5,000	1,007 contacts →
	Strong evidence “Penspen designs, maintains, and optimises energy infrastructure to improve access to secure and sustainable energy for communities worldwide.” Source: RevenueBase Database · checked Sep 16, 2026
8	Altera Infrastructure	Strong evidence	Aberdeenshire, United KingdomHQ checked Sep 16, 2026	501-1,000	955 contacts →
	Strong evidence “Altera Infrastructure is a leading global energy infrastructure services group focused on the ownership and operation of offshore energy assets.” Source: RevenueBase Database · checked Sep 16, 2026
9	OEG	Strong evidence	Dyce, United KingdomHQ checked Sep 16, 2026	1,001-5,000	859 contacts →
	Strong evidence “We are OEG, a leading energy solutions business providing mission critical infrastructure assets, technologies and services to the global energy industry.” Source: RevenueBase Database · checked Sep 16, 2026
10	M Group	Partial evidence	Stevenage, United KingdomHQ checked Sep 16, 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 16, 2026
11	Freedom	Indirect evidence	Leeds, United KingdomHQ checked Sep 16, 2026	1,001-5,000	664 contacts →
	Indirect evidence “Freedom is a leading provider of facilities and power engineering services.” Source: RevenueBase Database · checked Sep 16, 2026
12	PX Group	Partial evidence	Stockton On Tees, United KingdomHQ checked Sep 16, 2026	501-1,000	617 contacts →
	Partial evidence “px Group is a fully integrated infrastructure solutions business which delivers net zero and stakeholder success through elite performance in the safety, availability, reliability…” Source: RevenueBase Database · checked Sep 16, 2026
13	Aureos	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	1,001-5,000	583 contacts →
	Partial 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 16, 2026
14	NEXOS	Partial evidence	Aberdeen, United KingdomHQ checked Sep 16, 2026	501-1,000	446 contacts →
	Partial evidence “A new breed of engineering, procurement and construction (EPC) provider that is turning next-gen energy into operational reality, through innovative solutions, partnerships and…” Source: RevenueBase Database · checked Sep 16, 2026
15	Enerveo	Partial evidence	Birmingham, United KingdomHQ checked Sep 16, 2026	1,001-5,000	384 contacts →
	Partial evidence “Enerveo is a multi-disciplinary contracting business, with the skills and expertise to deliver complex projects in complex environments across a number of different service lines.” Source: RevenueBase Database · checked Sep 16, 2026
16	Intec Energy Solutions	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	501-1,000	242 contacts →
	Partial evidence “INTEC Energy Solutions delivers best-in-class services in Engineering, Procurement, Construction (EPC), Battery Energy Storage Systems (BESS), Manufacturing, Project Development…” Source: RevenueBase Database · checked Sep 16, 2026
17	UKPS	Indirect evidence	Stonehouse, United KingdomHQ checked Sep 16, 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 16, 2026
18	Eastgate Engineering	Strong evidence	Thornaby-on-tees, United KingdomHQ checked Sep 16, 2026	201-500	163 contacts →
	Strong evidence “Eastgate Engineering is an Electrical and Instrumentation contractor that delivers complex, high-risk infrastructure projects with cost certainty, without compromising safety or…” Source: RevenueBase Database · checked Sep 16, 2026
19	Wingate Electrical PLC	Indirect evidence	Basingstoke, United KingdomHQ checked Sep 16, 2026	201-500	162 contacts →
	Indirect evidence “Wingate Electrical Plc are the leading provider of Temporary Site Construction Services throughout the UK and within mainland Europe operating from offices in Basingstoke…” Source: RevenueBase Database · checked Sep 16, 2026
20	Fulcrum Group	Partial evidence	Sheffield, United KingdomHQ checked Sep 16, 2026	201-500	145 contacts →
	Partial evidence “Fulcrum is a leading ICP (Independent Connection Provider) designing and building electricity, gas and water connections and infrastructure for all sizes of residential…” Source: RevenueBase Database · checked Sep 16, 2026
21	PN Daly Limited	Indirect evidence	Rochdale, United KingdomHQ checked Sep 16, 2026	501-1,000	141 contacts →
	Indirect evidence “P.N.” Source: RevenueBase Database · checked Sep 16, 2026
22	S&r Construction LTD	Indirect evidence	Brierley Hill, United KingdomHQ checked Sep 16, 2026	201-500	137 contacts →
	Indirect evidence “S&R Construction was founded in 1998 with a view to providing affordable, sustainable gas, water and electric mains and utility installation services for a broad range of clients.” Source: RevenueBase Database · checked Sep 16, 2026
23	Irwin M&e	Partial evidence	Portadown, United KingdomHQ checked Sep 16, 2026	201-500	134 contacts →
	Partial evidence “We provide a full range of Mechanical, Electrical, Energy and Renewables installation and maintenance services to clients, across both public and private sectors throughout the UK…” Source: RevenueBase Database · checked Sep 16, 2026
24	Powersystems	Indirect evidence	Bristol, United KingdomHQ checked Sep 16, 2026	51-200	126 contacts →
	Indirect evidence “Powered by People.” Source: RevenueBase Database · checked Sep 16, 2026
25	Integrated Utility Services	Partial evidence	Wakefield, United KingdomHQ checked Sep 16, 2026	51-200	121 contacts →
	Partial evidence “Integrated Utility Services (IUS) aims to be the UK's leading provider of power infrastructure for the public and private sectors.” Source: RevenueBase Database · checked Sep 16, 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: energy 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 energy infrastructure contractors.
Partial evidence: Its own public description names part of energy infrastructure contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy 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 582 energy infrastructure contractors based in the United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 12,981 reachable decision-makers.

Free signup · no credit card

View the full list →

Energy infrastructure contractors based in the United Kingdom at a glance

As of Sep 16, 2026

27.9%Verified-email coverage

80.1Average contacts per company

11-50Median size (employees)

9.6%Largest-city concentration · London

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

206

11-50

218

51-200

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 582 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 energy 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 “energy 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 energy 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 energy 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, 12,981 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 16, 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.

Energy infrastructure contractors by metro

Energy infrastructure contractors in London56

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 energy 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 energy infrastructure contractors are there based in the United Kingdom?

RevenueBase identified 582 energy 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?

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

Which city has the most energy infrastructure contractors?

London leads with 56 headquartered companies, followed by Manchester (15) and Bristol (13).

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 12,981 verified decision-maker contacts tracked across these 582 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 16, 2026.

Ready to reach these companies? Verified emails and direct dials for all 582 energy infrastructure contractors based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

Energy infrastructure contractors by geography

Browse the directory

Browse: Companies home · All United Kingdom lists · All Energy infrastructure contractors lists · New 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 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.