Company lists · Data refreshed September 2026

Top 25 Electric distribution utilities based in the United Kingdom

RevenueBase identified 110 electric distribution utilities headquartered in the United Kingdom as of September 2026 and tracks 36,350 professional contacts across them, including 16,556 with verified work emails. London is the largest hub.

This list covers electric distribution utilities 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 15, 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 15, 2026 86% judged on-target in blind review
110Companies
36,350Contacts tracked
16,556Verified emails
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The 25 largest electric distribution utilities based in the United Kingdom

Ranked by team size
Top 25 of 110 electric distribution utilities based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 15, 2026. RevenueBase Smart Search rates how each company's information relates to electric distribution utilities: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceLondon, United KingdomHQ checked Sep 15, 202610001+24,403 contacts →

Indirect evidence

“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.”

Source: RevenueBase Database · checked Sep 15, 2026
2Partial evidenceLondon, United KingdomHQ checked Sep 15, 20265,001-10,0002,949 contacts →

Partial evidence

“UK Power Networks is a Distribution Network Operator providing power to a quarter of the UK's population.”

Source: RevenueBase Database · checked Sep 15, 2026
3Partial evidenceGlasgow, United KingdomHQ checked Sep 15, 20261,001-5,0001,523 contacts →

Partial evidence

“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.”

Source: RevenueBase Database · checked Sep 15, 2026
4Indirect evidenceNewcastle, United KingdomHQ checked Sep 15, 20261,001-5,0001,336 contacts →

Indirect evidence

“Want to be part of the People Behind the Power?”

Source: RevenueBase Database · checked Sep 15, 2026
5Strong evidenceNorth West England, United KingdomHQ checked Sep 15, 20261,001-5,0001,322 contacts →

Strong evidence

“We own and operate the North West's electricity distribution network.”

Source: RevenueBase Database · checked Sep 15, 2026
6Partial evidencePerth, United KingdomHQ checked Sep 15, 20261,001-5,0001,109 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 15, 2026
7Partial evidenceNewport, United KingdomHQ checked Sep 15, 20261,001-5,000762 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 15, 2026
8Partial evidenceBelfast, United KingdomHQ checked Sep 15, 20261,001-5,000723 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 15, 2026
9Indirect evidenceLeeds, United KingdomHQ checked Sep 15, 20261,001-5,000664 contacts →

Indirect evidence

“Freedom is a leading provider of facilities and power engineering services.”

Source: RevenueBase Database · checked Sep 15, 2026
10Strong evidenceLeatherhead, United KingdomHQ checked Sep 15, 202651-200136 contacts →

Strong evidence

“ESP Utilities Group Ltd is licensed to operate gas and electricity networks by the industry regulator Ofgem and has helped thousands across the country to make the connection.”

Source: RevenueBase Database · checked Sep 15, 2026
11Partial evidenceManchester, United KingdomHQ checked Sep 15, 2026201-500135 contacts →

Partial evidence

“Originally established in 2018, the business was rebranded in 2020 as IES Utilities Group Ltd.”

Source: RevenueBase Database · checked Sep 15, 2026
12Partial evidenceSalford, United KingdomHQ checked Sep 15, 2026201-500108 contacts →

Partial evidence

“Excalon is one of the Britain’s leading UK Electrical Utility Service Providers.”

Source: RevenueBase Database · checked Sep 15, 2026
13Partial evidenceBromsgrove, United KingdomHQ checked Sep 15, 202651-200105 contacts →

Partial evidence

“Rock Power Connections are experts in electrical connections with a proven track record of quality and safety.”

Source: RevenueBase Database · checked Sep 15, 2026
14Partial evidenceSittingbourne, United KingdomHQ checked Sep 15, 202651-20056 contacts →

Partial evidence

“Avidety specialise in the construction and maintenance of overhead and underground electricity networks.”

Source: RevenueBase Database · checked Sep 15, 2026
15Partial evidenceLondon, United KingdomHQ checked Sep 15, 202611-5036 contacts →

Partial evidence

“Aurora is an Ofgem regulated Independent Distribution Network Operator (IDNO).”

Source: RevenueBase Database · checked Sep 15, 2026
16Strong evidenceHyde, United KingdomHQ checked Sep 15, 202651-20030 contacts →

Strong evidence

“ISS Ltd are a HV/LV Power Engineering company operating nationwide, undertaking Turnkey Electrical Distribution Projects and Site Service activities, including installation…”

Source: RevenueBase Database · checked Sep 15, 2026
17Indirect evidenceWortley, United KingdomHQ checked Sep 15, 202611-5016 contacts →

Indirect evidence

“Unique in its operations, PES engineers substation equipment at its Leeds-based production facility, providing turnkey private network installation, independent contestable…”

Source: RevenueBase Database · checked Sep 15, 2026
18Strong evidenceMaghera, United KingdomHQ checked Sep 15, 202611-5016 contacts →

Strong evidence

“Grid Team Services efficiently constructs and installs quality end-to-end electrical transmission and distribution systems.”

Source: RevenueBase Database · checked Sep 15, 2026
19Partial evidenceSleaford, United KingdomHQ checked Sep 15, 202611-5012 contacts →

Partial evidence

“OAKWICK UTILITY ARBORISTS LTD is an utilities company.”

Source: RevenueBase Database · checked Sep 15, 2026
20Partial evidenceChatham, United KingdomHQ checked Sep 15, 202611-5010 contacts →

Partial evidence

“Experts in electrical infrastructure for engineering & construction sectors.”

Source: RevenueBase Database · checked Sep 15, 2026
21Partial evidenceSleaford, United KingdomHQ checked Sep 15, 202611-509 contacts →

Partial evidence

“EME Power Systems Limited is a leading national provider of power distribution services to business and industry.”

Source: RevenueBase Database · checked Sep 15, 2026
22Strong evidenceMerseyside, United KingdomHQ checked Sep 15, 202651-2008 contacts →

Strong evidence

“Future Electrics Ltd was established in Our expertise lies within the area of the Utilities Networks.”

Source: RevenueBase Database · checked Sep 15, 2026
23Indirect evidenceChelmsford, United KingdomHQ checked Sep 15, 202611-508 contacts →

Indirect evidence

“EnDCo is the brand name of EPG Energy Limited, a UK-based energy supply business operating in the corporate sector.”

Source: RevenueBase Database · checked Sep 15, 2026
24Indirect evidenceBarnet, United KingdomHQ checked Sep 15, 20261-108 contacts →

Indirect evidence

“Since 1987, we have been proudly serving residential and commercial customers, both locally in and around Barnet, as well as in Hertfordshire, the West End, and City.”

Source: RevenueBase Database · checked Sep 15, 2026
25Indirect evidenceNewport, United KingdomHQ checked Sep 15, 202611-508 contacts →

Indirect evidence

“MARBLE POWER LIMITED is an energy supply company based out of Kestrel Court, Waterwells Drive, Quedgeley, Gloucester, United Kingdom.”

Source: RevenueBase Database · checked Sep 15, 2026

Showing 25 of 110 electric distribution utilities based in the United Kingdom

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Electric distribution utilities based in the United Kingdom at a glance

As of Sep 15, 2026
45.5%Verified-email coverage
330.5Average contacts per company
11-50Median size (employees)
10.0%Largest-city concentration · London
Sep 15, 2026Page data refreshed

Companies by employee count

1-10
53
11-50
29
51-200
13
201-500
3
1,001-5,000
7
5,001-10,000
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 110 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 electric distribution utilities, 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 “electric distribution utilities”. 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 electric distribution utilities), 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 electric distribution utilities, 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, 16,556 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 15, 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.

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 electric distribution utilities, 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 electric distribution utilities are there based in the United Kingdom?

RevenueBase identified 110 electric distribution utilities 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?

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

Which city has the most electric distribution utilities?

London leads with 11 headquartered companies, followed by Leeds (4) and Belfast (2).

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 16,556 verified decision-maker contacts tracked across these 110 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 15, 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.