Company lists · Data refreshed September 2026

Top 25 Energy infrastructure operators based in the United Kingdom

RevenueBase identified 411 company matches for energy infrastructure operators associated with the United Kingdom as of September 2026 and tracks 104,752 professional contacts across them, including 39,054 with verified work emails. London is the largest hub.

This list covers company matches for energy infrastructure operators 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 16, 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 16, 2026 How this list was built
411Companies
104,752Contacts tracked
39,054Verified emails
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The 25 largest energy infrastructure operators based in the United Kingdom

Ranked by team size
Top 25 of 411 company matches for energy infrastructure operators based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 16, 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 16, 202610001+24,403 contacts →

Exact match

“We power the lives of millions of people across Britain, New York and Massachusetts, moving energy from where it’s made to the communities that need it, every single day.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
2Exact matchNewcastle Upon Tyne, United KingdomHQ recorded Sep 16, 202610001+19,907 contacts →

Exact match

“TechnipFMC is a leading technology provider to the traditional and new energies industry, delivering fully integrated projects, products, and services.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Sep 16, 20265,001-10,00013,261 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
4Exact matchWindsor, United KingdomHQ recorded Sep 16, 202610001+4,555 contacts →

Exact match

“Centrica is an international energy services and solutions company, founded on a 200-year heritage of serving customers in homes and businesses.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
5Exact matchCoventry, United KingdomHQ recorded Sep 16, 202610001+4,343 contacts →

Exact match

“It's on us to make new energy work.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
6Exact matchAberdeen, United KingdomHQ recorded Sep 16, 20261,001-5,0002,640 contacts →

Exact match

“EnerMech delivers integrated specialist services that support critical assets across the energy and infrastructure sectors worldwide.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Sep 16, 20261,001-5,0002,627 contacts →

Exact match

“We help businesses manage energy needs, boost efficiency, control costs and achieve decarbonisation goals for a better energy future.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
8Exact matchWarwick, United KingdomHQ recorded Sep 16, 20261,001-5,0001,666 contacts →

Exact match

“National Gas is securing Britain’s energy.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
9Exact matchStockport, United KingdomHQ recorded Sep 16, 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 16, 2026 · View company records in RevenueBase
10Exact matchGlasgow, United KingdomHQ recorded Sep 16, 20261,001-5,0001,523 contacts →

Exact match

“We transmit, distribute and connect electricity to and from 3.5 million homes and businesses over our network, 24 hours a day, every day of the year.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Sep 16, 20261,001-5,0001,211 contacts →

Exact match

“HUNTING is an energy services provider to the world's leading national and international oil and gas companies, manufacturing and distributing products that enable the extraction…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
12Exact matchPerth, United KingdomHQ recorded Sep 16, 20261,001-5,0001,109 contacts →

Exact match

“We're responsible for maintaining the electricity networks supplying over 3.9 million homes and businesses across central southern England and north of the Central Belt of…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Sep 16, 20265,001-10,0001,064 contacts →

Exact match

“Together, we’re delivering technical solutions for a better society and an Electric Britain Dalkia is one of the UK’s leading technical and energy services providers at the…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Sep 16, 20261,001-5,0001,007 contacts →

Exact match

“Penspen designs, maintains, and optimises energy infrastructure to improve access to secure and sustainable energy for communities worldwide.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
15Exact matchWorsley, United KingdomHQ recorded Sep 16, 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 16, 2026 · View company records in RevenueBase
16Exact matchAberdeenshire, United KingdomHQ recorded Sep 16, 2026501-1,000955 contacts →

Exact match

“Altera Infrastructure is a leading global energy infrastructure services group focused on the ownership and operation of offshore energy assets.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
17Exact matchDyce, United KingdomHQ recorded Sep 16, 20261,001-5,000859 contacts →

Exact match

“We are OEG, a leading energy solutions business providing mission critical infrastructure assets, technologies and services to the global energy industry.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
18Exact matchStevenage, United KingdomHQ recorded Sep 16, 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 16, 2026 · View company records in RevenueBase
19Exact matchGlasgow, United KingdomHQ recorded Sep 16, 20261,001-5,000766 contacts →

Exact match

“Through our range of innovative energy solutions, we are delivering the future of smart energy – working closely with private and public sector partners to decarbonise the UK…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
20Exact matchNewport, United KingdomHQ recorded Sep 16, 20261,001-5,000762 contacts →

Exact match

“We are Wales & West Utilities, your gas emergency and pipeline service.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
21Exact matchManchester, United KingdomHQ recorded Sep 16, 20261,001-5,000692 contacts →

Exact match

“We are Calisen.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
22Exact matchLeeds, United KingdomHQ recorded Sep 16, 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 16, 2026 · View company records in RevenueBase
23Exact matchWarrington, United KingdomHQ recorded Sep 16, 20261,001-5,000644 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
24Exact matchStockton On Tees, United KingdomHQ recorded Sep 16, 2026501-1,000617 contacts →

Exact match

“px Group is a fully integrated infrastructure solutions business which delivers net zero and stakeholder success through elite performance in the safety, availability, reliability…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
25Exact matchLondon, United KingdomHQ recorded Sep 16, 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 16, 2026 · View company records in RevenueBase

Showing 25 of 411 energy infrastructure operators based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 39,054 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Energy infrastructure operators based in the United Kingdom at a glance

As of Sep 16, 2026
37.3%Verified-email coverage
254.9Average contacts per company
11-50Median size (employees)
16.1%Largest-city concentration · London
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
121
11-50
137
51-200
71
201-500
24
501-1,000
18
1,001-5,000
24
5,001-10,000
7
10001+
6

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 411 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 “energy infrastructure operators” 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 39,054 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 16, 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 “energy infrastructure operators”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many energy infrastructure operators are there based in the United Kingdom?

RevenueBase identified 411 company matches for energy infrastructure operators 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?

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

Which city has the most energy infrastructure operators?

London leads with 66 company records, followed by Manchester (18) and Aberdeen (8).

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 39,054 professional contacts with verified work emails tracked across these 411 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 16, 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.