Company lists · Data refreshed September 2026

Top 25 Gas and electric companies UK based in the United Kingdom

RevenueBase identified 216 company matches for gas and electric companies UK associated with the United Kingdom as of September 2026 and tracks 42,744 professional contacts across them, including 16,860 with verified work emails. London is the largest hub.

This list covers company matches for gas and electric companies UK 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 20, 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 20, 2026 How this list was built
216Companies
42,744Contacts tracked
16,860Verified emails
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The 25 largest gas and electric companies UK based in the United Kingdom

Ranked by team size
Top 25 of 216 company matches for gas and electric companies UK based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 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 20, 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 20, 2026 · View company records in RevenueBase
2Exact matchSwindon, United KingdomHQ recorded Sep 20, 202610001+2,679 contacts →

Exact match

“npower is one of Britain’s leading energy companies, serving domestic and business customers with electricity and gas.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3Exact matchHorley, United KingdomHQ recorded Sep 20, 20261,001-5,0002,315 contacts →

Exact match

“SGN manages the network which distributes natural and green gas to approximately six million homes and businesses across Scotland and southern England.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Sep 20, 20261,001-5,0001,512 contacts →

Exact match

“At E.ON Next, we make new energy work.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5Exact matchLondon, United KingdomHQ recorded Sep 20, 20261,001-5,0001,130 contacts →

Exact match

“We help people do things differently in the UK in order to shrink their bills with the excellent backup of a customer support team in the London head office.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6Exact matchWarwick, United KingdomHQ recorded Sep 20, 20261,001-5,0001,075 contacts →

Exact match

“We’ve spent 90 years supplying energy to off-grid homes and businesses across the UK.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7Exact matchWorsley, United KingdomHQ recorded Sep 20, 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 20, 2026 · View company records in RevenueBase
8Exact matchWoolpit, United KingdomHQ recorded Sep 20, 2026201-500509 contacts →

Exact match

“GTC is the market leading independent utility infrastructure provider to: • National & regional house builders and developers.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9Exact matchWoolpit, United KingdomHQ recorded Sep 20, 20261,001-5,000504 contacts →

Exact match

“We are BUUK, the UK's leading independent provider of last-mile utility networks.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10Exact matchChorley, United KingdomHQ recorded Sep 20, 2026501-1,000440 contacts →

Exact match

“Transforming utilities for communities We are an expert, responsible and agile partner, providing vital services to the UK’s utilities networks.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11Exact matchUnited KingdomHQ recorded Sep 20, 2026501-1,000396 contacts →

Exact match

“The Energy Assets Group is a leading, nationwide, utilities firm which owns, operates and manages over 1.8 million meter, data and network assets throughout Britain.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12Exact matchLondon, United KingdomHQ recorded Sep 20, 202651-200366 contacts →

Exact match

“Based in Canary Wharf and spanning operations across three continents, PE (formally Pozitive Energy) stands as a sustainable utility provider, alongside offering telecoms…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchWatford, United KingdomHQ recorded Sep 20, 202651-200331 contacts →

Exact match

“Welcome to Corona Energy – a leading independent energy supplier to UK businesses.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14Exact matchNottingham, United KingdomHQ recorded Sep 20, 202651-200273 contacts →

Exact match

“Yü Energy was built with a mission to shake up the UK business energy market, offering businesses innovative energy solutions that help save time and money.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15Exact matchSale, United KingdomHQ recorded Sep 20, 2026501-1,000252 contacts →

Exact match

“Since 1998, we’ve provided small businesses with the essential services they need.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16Exact matchCoventry, United KingdomHQ recorded Sep 20, 2026201-500249 contacts →

Exact match

“All Utilities.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17Exact matchNewmarket, United KingdomHQ recorded Sep 20, 2026201-500239 contacts →

Exact match

“Based in Newmarket, Suffolk, we cover a wide range of industrial, commercial and residential smart metering and gas and electric applications across England, Scotland and Wales.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18Exact matchDurham, United KingdomHQ recorded Sep 20, 2026201-500214 contacts →

Exact match

“Welcome to Wave.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19Exact matchSale, United KingdomHQ recorded Sep 20, 2026501-1,000202 contacts →

Exact match

“We provide UK SMEs with telecoms, water, gas and electricity, payment services and business insurance.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20Exact matchFleetwood, United KingdomHQ recorded Sep 20, 2026201-500180 contacts →

Exact match

“At Ruby Energy, we are more than just energy suppliers; we are champions of your progress, specifically tailored to empower SMEs.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21Exact matchAbingdon, United KingdomHQ recorded Sep 20, 202651-200174 contacts →

Exact match

“Conrad Energy is a leading UK energy company.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22Exact matchPeterlee, United KingdomHQ recorded Sep 20, 202651-200163 contacts →

Exact match

“Everflow is a customer-focussed, ‘Excellent’-rated utilities company serving businesses across the UK with environmentally friendly water supply, commercial waste, and…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23Exact matchWest Farleigh, United KingdomHQ recorded Sep 20, 2026501-1,000147 contacts →

Exact match

“Ferns is one of the largest independent utility infrastructure services providers in the south of the UK.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24Exact matchLondon, United KingdomHQ recorded Sep 20, 2026501-1,000141 contacts →

Exact match

“Bulb provided 100% renewable electricity to homes in the UK, France, Spain and Texas and 100% carbon offset gas in the UK.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25Exact matchLeatherhead, United KingdomHQ recorded Sep 20, 202651-200136 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

Showing 25 of 216 gas and electric companies UK based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 16,860 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Gas and electric companies UK based in the United Kingdom at a glance

As of Sep 20, 2026
39.4%Verified-email coverage
197.9Average contacts per company
11-50Median size (employees)
11.6%Largest-city concentration · London
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
89
11-50
44
51-200
38
201-500
22
501-1,000
9
1,001-5,000
9
5,001-10,000
1
10001+
2

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 216 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 “gas and electric companies UK” 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 16,860 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 20, 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 “gas and electric companies UK”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many gas and electric companies UK are there based in the United Kingdom?

RevenueBase identified 216 company matches for gas and electric companies UK 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 gas and electric companies UK?

London leads with 25 company records, followed by Manchester (15) and Nottingham (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 16,860 professional contacts with verified work emails tracked across these 216 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 20, 2026.

Ready to reach these companies? Verified emails and direct dials for all 216 gas and electric companies UK based in the United Kingdom. Start with a free account, no credit card.

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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.