Company lists · Data refreshed September 2026

Top 25 Critical power infrastructure companies based in the United Kingdom

RevenueBase identified 311 company matches for critical power infrastructure companies associated with the United Kingdom as of September 2026 and tracks 5,127 professional contacts across them, including 2,161 with verified work emails. London is the largest hub.

This list covers company matches for critical power 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 19, 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 19, 2026 How this list was built
311Companies
5,127Contacts tracked
2,161Verified emails
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The 25 largest critical power infrastructure companies based in the United Kingdom

Ranked by team size
Top 25 of 311 company matches for critical power infrastructure companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 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 matchLeeds, United KingdomHQ recorded Sep 19, 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 19, 2026 · View company records in RevenueBase
2Exact matchMaidenhead, United KingdomHQ recorded Sep 19, 2026201-500272 contacts →

Exact match

“AVK is the largest and fastest-growing supplier of innovative power solutions for data centres, AI infrastructure and leading organisations in the UK and Europe.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3Exact matchScarborough, United KingdomHQ recorded Sep 19, 2026201-500214 contacts →

Exact match

“Founded in 1935 Dale Power Solutions Ltd have been providing reliable; secure power solutions for mission critical services & systems throughout the world.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4Exact matchHeanor, United KingdomHQ recorded Sep 19, 202651-200168 contacts →

Exact match

“WB Power Services Ltd (now proudly part of Rehlko) provide critical power services to some of the UK’s most important businesses and organisations, ensuring essential services are…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5Exact matchCannock, United KingdomHQ recorded Sep 19, 20261,001-5,000141 contacts →

Exact match

“Finning Power & Energy is a division of Finning, the sole dealer for Caterpillar in the UK & Ireland.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6Exact matchPontefract, United KingdomHQ recorded Sep 19, 2026201-500125 contacts →

Exact match

“ADE Power have over 25 years of experience at the forefront of the design, manufacture, and fit-out of precision engineered acoustic and modular enclosures for the packaging of…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7Exact matchWakefield, United KingdomHQ recorded Sep 19, 202651-200121 contacts →

Exact match

“Integrated Utility Services (IUS) aims to be the UK's leading provider of power infrastructure for the public and private sectors.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8Exact matchOxfordshire, United KingdomHQ recorded Sep 19, 202651-200112 contacts →

Exact match

“Our mission is to excel in the design, installation and maintenance of the electro-technical systems that connect to create fit for purpose building environments.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9Exact matchEckington, United KingdomHQ recorded Sep 19, 202651-20097 contacts →

Exact match

“Power Control Ltd is now proudly part of Legrand, a leading European manufacturer of innovative, reliable, and efficient UPS systems.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10Exact matchWrexham, United KingdomHQ recorded Sep 19, 202651-20095 contacts →

Exact match

“Riello UPS Ltd is a leader in the manufacture of uninterruptible power supplies (UPS) from 400 VA to 6.4 MVA and standby generators from 8 kVA to 2.5 MVA.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11Exact matchSherburn In Elmet, United KingdomHQ recorded Sep 19, 202651-20093 contacts →

Exact match

“YorPower are multi award winning company with their head office based in the UK.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12Exact matchAndover, United KingdomHQ recorded Sep 19, 202651-20085 contacts →

Exact match

“The UK's leading Technical Experts in Standby Power, Uninterruptible Power Supplies and Combined Heat & Power Systems.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Sep 19, 202651-20079 contacts →

Exact match

“Highview is a leading energy infrastructure business.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14Exact matchMilngavie, United KingdomHQ recorded Sep 19, 202651-20079 contacts →

Exact match

“From our 6.3-acre HQ in Glasgow, and further sites in Bristol and Rugby, we supply, install and maintain diesel and gas generators, combined heat and power systems (CHP), solar…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15Exact matchBraintree, United KingdomHQ recorded Sep 19, 202651-20075 contacts →

Exact match

“Securing your power needs to deliver your electrification plans with certainty.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16Exact matchGillingham, United KingdomHQ recorded Sep 19, 202651-20056 contacts →

Exact match

“MEMS Power Generation is the UK leader in generator hire, approaching our 50th year of delivering temporary power solutions that businesses can depend on.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17Exact matchSwindon, United KingdomHQ recorded Sep 19, 202611-5051 contacts →

Exact match

“UPS Systems PLC are the UK’s leading independent supplier of standby power and occupy a unique position in the provision of back-up power solutions to businesses of all sizes.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18Exact matchCrewe, United KingdomHQ recorded Sep 19, 202611-5051 contacts →

Exact match

“Enrgy provide utility scale power infrastructure services up to 33KV for private generation customers.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19Exact matchMiddlesbrough, United KingdomHQ recorded Sep 19, 202611-5047 contacts →

Exact match

“Durata is the trusted partner your business needs for critical power, legacy optimisation and modular data centre solutions.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20Exact matchSt Helens, United KingdomHQ recorded Sep 19, 202611-5038 contacts →

Exact match

“Burtonwood provide a comprehensive range of power generation and switchgear services to the MOD, public and private sectors both in the UK and Europe.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21Exact matchAylesford, United KingdomHQ recorded Sep 19, 202651-20037 contacts →

Exact match

“Energy Solutions (UK) Ltd designs, manufactures and supplies integrated power, monitoring and control systems for marine, specialist vehicle, off‑grid and industrial applications…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22Exact matchPreston, United KingdomHQ recorded Sep 19, 202651-20036 contacts →

Exact match

“A trusted provider, we deliver infrastructure services to the owners and operators of critical infrastructure that helps ensure the safe and reliable operation of utility assets…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23Exact matchRomsey, United KingdomHQ recorded Sep 19, 202611-5035 contacts →

Exact match

“BPC manufacture and distribute a wide range of UPS and related power protection products aimed at the Computer Networking, Telecom, Midrange Computer, Emergency Lighting and Three…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24Exact matchTheale, United KingdomHQ recorded Sep 19, 202651-20035 contacts →

Exact match

“FiveFour Engineering Service work within the United Kingdom, Central Europe and Scandinavia for clients that have power requirements in either traditional methods of new build or…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25Exact matchSheffield, United KingdomHQ recorded Sep 19, 202611-5031 contacts →

Exact match

“Secure Power is a leading provider of backup power solutions, ensuring reliability and efficiency for businesses across many sectors.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

Showing 25 of 311 critical power infrastructure companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 2,161 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Critical power infrastructure companies based in the United Kingdom at a glance

As of Sep 19, 2026
42.1%Verified-email coverage
16.5Average contacts per company
11-50Median size (employees)
7.4%Largest-city concentration · London
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
125
11-50
130
51-200
40
201-500
9
501-1,000
3
1,001-5,000
2
10001+
1

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 311 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 “critical power 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 2,161 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 19, 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 “critical power infrastructure companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 311 company matches for critical power 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?

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

Which city has the most critical power infrastructure companies?

London leads with 23 company records, followed by Leeds (7) and Manchester (6).

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 2,161 professional contacts with verified work emails tracked across these 311 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 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 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.