Company lists · Data refreshed September 2026

Top 25 Electrical infrastructure companies based in the United Kingdom

Name: Electrical infrastructure companies 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 2,245 companies tracked

RevenueBase identified 2,245 electrical infrastructure companies headquartered in the United Kingdom as of September 2026 and tracks 34,752 professional contacts across them, including 12,774 with verified work emails. London is the largest hub.

This list covers electrical infrastructure companies 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

2,245Companies

34,752Contacts tracked

12,774Verified emails

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

The 25 largest electrical infrastructure companies based in the United Kingdom

Ranked by team size

Top 25 of 2,245 electrical infrastructure companies 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 electrical infrastructure companies: 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	City Electrical Factors	Partial evidence	Kenilworth, United KingdomHQ checked Sep 19, 2026	1,001-5,000	2,363 contacts →
	Partial evidence “City Electrical Factors Ltd is a private limited company established in 1951.” Source: RevenueBase Database · checked Sep 19, 2026
2	OCU	Partial evidence	Stockport, United KingdomHQ checked Sep 19, 2026	1,001-5,000	1,578 contacts →
	Partial 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 19, 2026
3	SP Electricity North West	Partial evidence	North West England, United KingdomHQ checked Sep 19, 2026	1,001-5,000	1,322 contacts →
	Partial evidence “We own and operate the North West's electricity distribution network.” Source: RevenueBase Database · checked Sep 19, 2026
4	Scottish And Southern Electricity Networks	Partial evidence	Perth, United KingdomHQ checked Sep 19, 2026	1,001-5,000	1,109 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
5	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
6	NIE Networks	Partial evidence	Belfast, United KingdomHQ checked Sep 19, 2026	1,001-5,000	723 contacts →
	Partial evidence “NIE Networks is responsible for the safe, secure and reliable supply of electricity to homes, farms and businesses across Northern Ireland.” Source: RevenueBase Database · checked Sep 19, 2026
7	Calisen	Indirect evidence	Manchester, United KingdomHQ checked Sep 19, 2026	1,001-5,000	692 contacts →
	Indirect evidence “We are Calisen.” Source: RevenueBase Database · checked Sep 19, 2026
8	Freedom	Indirect evidence	Leeds, United KingdomHQ checked Sep 19, 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 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	Partial evidence	Woolpit, United KingdomHQ checked Sep 19, 2026	201-500	509 contacts →
	Partial 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	Buuk Infrastructure	Indirect evidence	Woolpit, United KingdomHQ checked Sep 19, 2026	1,001-5,000	504 contacts →
	Indirect evidence “We are BUUK, the UK's leading independent provider of last-mile utility networks.” Source: RevenueBase Database · checked Sep 19, 2026
13	Atlantica Sustainable Infrastructure PLC	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	1,001-5,000	503 contacts →
	Partial evidence “Atlantica is a sustainable infrastructure company that owns, manages, develops, builds and invests in renewable energy, storage, efficient natural gas and heat, transmission lines…” Source: RevenueBase Database · checked Sep 19, 2026
14	Avove Utilities	Indirect evidence	Chorley, United KingdomHQ checked Sep 19, 2026	501-1,000	440 contacts →
	Indirect 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
15	Quartzelec Limited	Partial evidence	Rugby, United KingdomHQ checked Sep 19, 2026	501-1,000	412 contacts →
	Partial evidence “Quartzelec is a leading independent electrical engineering group delivering solutions and services in both UK and global markets.” Source: RevenueBase Database · checked Sep 19, 2026
16	Morrison Energy Services	Strong evidence	Stevenage, United KingdomHQ checked Sep 19, 2026	1,001-5,000	396 contacts →
	Strong evidence “Morrison Energy Services work with national energy networks to repair, renew, refurbish and maintain the country’s gas and electric infrastructure, with a key focus on…” Source: RevenueBase Database · checked Sep 19, 2026
17	Enerveo	Indirect evidence	Birmingham, United KingdomHQ checked Sep 19, 2026	1,001-5,000	384 contacts →
	Indirect 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 19, 2026
18	Brush Group	Indirect evidence	Loughborough, United KingdomHQ checked Sep 19, 2026	501-1,000	367 contacts →
	Indirect evidence “We support the global drive to net zero with innovative, engineered solutions that address grid resilience and systems challenges, facilitate electrification of transport and…” Source: RevenueBase Database · checked Sep 19, 2026
19	SPL Powerlines Uk&i	Partial evidence	Coatbridge, United KingdomHQ checked Sep 19, 2026	501-1,000	337 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
20	Omexom UK	Partial evidence	Belfast, United KingdomHQ checked Sep 19, 2026	501-1,000	325 contacts →
	Partial evidence “Omexom in the United Kingdom and Republic of Ireland is the VINCI Energies brand dedicated to the Generation, Transmission, and Distribution of electricity as well as the design…” Source: RevenueBase Database · checked Sep 19, 2026
21	EA Technology	Partial evidence	Chester, United KingdomHQ checked Sep 19, 2026	201-500	317 contacts →
	Partial evidence “EA Technology provide innovative solutions for smarter planning, operations and investment decisions across electrical networks globally.” Source: RevenueBase Database · checked Sep 19, 2026
22	Volkerhighways	Indirect evidence	Hoddesdon, United KingdomHQ checked Sep 19, 2026	201-500	198 contacts →
	Indirect evidence “VolkerHighways is a leader in the delivery of highways and street lighting term maintenance contracts, traffic management and specialist EV charging solutions.” Source: RevenueBase Database · checked Sep 19, 2026
23	Dron & Dickson	Partial evidence	Stirling, United KingdomHQ checked Sep 19, 2026	201-500	194 contacts →
	Partial evidence “Dron & Dickson are specialists in integrated supply, installation and maintenance of harsh & hazardous area electrical equipment.” Source: RevenueBase Database · checked Sep 19, 2026
24	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
25	Denmans Electrical	Partial evidence	Bristol, United KingdomHQ checked Sep 19, 2026	501-1,000	164 contacts →
	Partial evidence “Denmans has over 50 branches nationwide and is part of the largest Electrical Distributor in the world, the Rexel Group.” 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: electrical infrastructure companies. 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 electrical infrastructure companies.
Partial evidence: Its own public description names part of electrical infrastructure companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name electrical infrastructure companies. 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 2,245 electrical infrastructure companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 12,774 reachable decision-makers.

Free signup · no credit card

View the full list →

Electrical infrastructure companies based in the United Kingdom at a glance

As of Sep 19, 2026

36.8%Verified-email coverage

15.5Average contacts per company

1-10Median size (employees)

6.4%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

1,174

11-50

775

51-200

183

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 2,245 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 electrical infrastructure companies, 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 “electrical infrastructure companies”. 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 electrical infrastructure companies), 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 electrical infrastructure companies, 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, 12,774 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.

Electrical infrastructure companies by metro

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 electrical infrastructure companies, 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 electrical infrastructure companies are there based in the United Kingdom?

RevenueBase identified 2,245 electrical infrastructure companies 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?

City Electrical Factors, headquartered in Kenilworth, tops this list with the largest team on record.

Which city has the most electrical infrastructure companies?

London leads with 144 headquartered companies, followed by Manchester (51) and Glasgow (25).

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 12,774 verified decision-maker contacts tracked across these 2,245 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.

Ready to reach these companies? Verified emails and direct dials for all 2,245 electrical infrastructure companies based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

Electrical infrastructure companies by geography

Browse the directory

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.