Company lists · Data refreshed September 2026
Top 25 Utility companies based in the United Kingdom
RevenueBase identified 260 company matches for utility companies associated with the United Kingdom as of September 2026 and tracks 39,887 professional contacts across them, including 16,936 with verified work emails. London is the largest hub.
This list covers company matches for utility 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 22, 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.
The 25 largest utility companies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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 22, 2026 · View company records in RevenueBase | |||||
| 2 | 5,563 contacts → | ||||
Exact match “Water is wonderful.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 3 | 2,627 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 22, 2026 · View company records in RevenueBase | |||||
| 4 | 977 contacts → | ||||
Exact match “Network Plus is a leading utility and infrastructure service provider, operating across the UK.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 5 | 792 contacts → | ||||
Exact match “Founded in 2003, Utilita Energy was created to challenge the Big 6 energy suppliers by empowering everyone with a fair and flexible service that’s good for the pocket and planet.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 6 | 762 contacts → | ||||
Exact match “We are Wales & West Utilities, your gas emergency and pipeline service.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 7 | 509 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 22, 2026 · View company records in RevenueBase | |||||
| 8 | 396 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 22, 2026 · View company records in RevenueBase | |||||
| 9 | 238 contacts → | ||||
Exact match “South Staffs Water is a private water company formed in 1853 to provide water to the inhabitants of the Black Country.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 10 | 202 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 22, 2026 · View company records in RevenueBase | |||||
| 11 | 158 contacts → | ||||
Exact match “TriConnex are a leading provider of multi-utility services, working with residential housebuilders to connect Electricity, Water, Waste, and Fibre to their developments.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 12 | 147 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 22, 2026 · View company records in RevenueBase | |||||
| 13 | 137 contacts → | ||||
Exact match “S&R Construction was founded in 1998 with a view to providing affordable, sustainable gas, water and electric mains and utility installation services for a broad range of clients.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 14 | 136 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 22, 2026 · View company records in RevenueBase | |||||
| 15 | 135 contacts → | ||||
Exact match “Originally established in 2018, the business was rebranded in 2020 as IES Utilities Group Ltd.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 16 | 119 contacts → | ||||
Exact match “We make bills as easy as they should be.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 17 | 109 contacts → | ||||
Exact match “Leep Utilities (Leep) is a UK-based last-mile multi-utility company.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 18 | 98 contacts → | ||||
Exact match “Procurement services from Independent Utility Advice can protect your company from rising business energy costs and fluctuating prices.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 19 | 94 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 20 | 68 contacts → | ||||
Exact match “What we do We make managing utilities extraordinarily easy.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 21 | 66 contacts → | ||||
Exact match “We are an independent adopter of utility assets on behalf of our licensed operators Last Mile Electricity Ltd and Last Mile Gas Ltd.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 22 | 63 contacts → | ||||
Exact match “We understand that there are a myriad of different options and avenues available when it comes to finding the best utility infrastructure solution for your development.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 23 | 60 contacts → | ||||
Exact match “At Yorkshire Gas and Power, we do business energy differently.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 24 | 57 contacts → | ||||
Exact match “In March 2005, firmus energy was formally awarded supply and distribution licenses for the development of a natural gas network outside greater Belfast.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 25 | 48 contacts → | ||||
Exact match “Indigo Networks invests in, adopts, owns and operates essential electricity, gas and water infrastructure and networks across the UK.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “utility companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 260 utility companies based in the United Kingdom
See the full list, filter by size, metro and specialty, and access 16,936 tracked professional contacts with verified work emails. Direct dials are available where recorded.
Free signup · no credit card
Utility companies based in the United Kingdom at a glance
As of Sep 22, 2026Companies by employee count
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 260 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 “utility 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 16,936 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 22, 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 “utility companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many utility companies are there based in the United Kingdom?
RevenueBase identified 260 company matches for utility 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?
National Grid tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most utility companies?
London leads with 33 company records, followed by Manchester (17) and Glasgow (5).
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 16,936 professional contacts with verified work emails tracked across these 260 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 22, 2026.
Ready to reach these companies? Verified emails and direct dials for all 260 utility companies based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Utility companies by geography
- Utility companies based in Australia
- Utility companies based in Austria
- Utility companies based in Brazil
- Utility companies based in Canada
- Utility companies based in Colombia
- Utility companies based in Denmark
- Utility companies based in Finland
- Utility companies based in France
- Utility companies based in Germany
- Utility companies based in India
- Utility companies based in Italy
- Utility companies based in Norway
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 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.
More company lists
Company intelligence · public preview
Top 25 utility companies based in the United Kingdom
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 260 matching company records for utility companies based in the United Kingdom, with 39,887 tracked contacts and 16,936 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 22, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 utility companies based in the United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  National Gridnationalgrid.comHQ: London, United KingdomReported employees: 10001+ | London, United Kingdom | 10001+ | Exact match | 24,403 contacts → |
“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 description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Severn Trentseverntrent.com HQ: Coventry, United KingdomReported employees: 5,001-10,000 | Coventry, United Kingdom | 5,001-10,000 | Exact match | 5,563 contacts → |
“Water is wonderful.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Shell Energyshell.comHQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 2,627 contacts → |
“We help businesses manage energy needs, boost efficiency, control costs and achieve decarbonisation goals for a better energy future.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Network Plusnetworkplus.co.ukHQ: Worsley, United KingdomReported employees: 5,001-10,000 | Worsley, United Kingdom | 5,001-10,000 | Exact match | 977 contacts → |
“Network Plus is a leading utility and infrastructure service provider, operating across the UK.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Utilita Energyutilita.co.ukHQ: Chandler's Ford, United KingdomReported employees: 1,001-5,000 | Chandler's Ford, United Kingdom | 1,001-5,000 | Exact match | 792 contacts → |
“Founded in 2003, Utilita Energy was created to challenge the Big 6 energy suppliers by empowering everyone with a fair and flexible service that’s good for the pocket and planet.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Wales & West Utilitieswwutilities.co.ukHQ: Newport, United KingdomReported employees: 1,001-5,000 | Newport, United Kingdom | 1,001-5,000 | Exact match | 762 contacts → |
“We are Wales & West Utilities, your gas emergency and pipeline service.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | GTCgtc-uk.co.uk HQ: Woolpit, United KingdomReported employees: 201-500 | Woolpit, United Kingdom | 201-500 | Exact match | 509 contacts → |
“GTC is the market leading independent utility infrastructure provider to: • National & regional house builders and developers.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Energy Assetsenergyassets.co.ukHQ: United KingdomReported employees: 501-1,000 | United Kingdom | 501-1,000 | Exact match | 396 contacts → |
“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 description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | South Staffs Watersouth-staffs-water.co.uk HQ: Walsall, United KingdomReported employees: 501-1,000 | Walsall, United Kingdom | 501-1,000 | Exact match | 238 contacts → |
“South Staffs Water is a private water company formed in 1853 to provide water to the inhabitants of the Black Country.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Clear Businessclearbusiness.co.ukHQ: Sale, United KingdomReported employees: 501-1,000 | Sale, United Kingdom | 501-1,000 | Exact match | 202 contacts → |
“We provide UK SMEs with telecoms, water, gas and electricity, payment services and business insurance.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Triconnex Limitedtriconnex.co.uk HQ: Braintree, United KingdomReported employees: 201-500 | Braintree, United Kingdom | 201-500 | Exact match | 158 contacts → |
“TriConnex are a leading provider of multi-utility services, working with residential housebuilders to connect Electricity, Water, Waste, and Fibre to their developments.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Ferns Groupfernsgroup.co.uk HQ: West Farleigh, United KingdomReported employees: 501-1,000 | West Farleigh, United Kingdom | 501-1,000 | Exact match | 147 contacts → |
“Ferns is one of the largest independent utility infrastructure services providers in the south of the UK.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  S&r Construction LTDsrconstructionltd.co.ukHQ: Brierley Hill, United KingdomReported employees: 201-500 | Brierley Hill, United Kingdom | 201-500 | Exact match | 137 contacts → |
“S&R Construction was founded in 1998 with a view to providing affordable, sustainable gas, water and electric mains and utility installation services for a broad range of clients.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | ESP Utilities Group LTDespug.com HQ: Leatherhead, United KingdomReported employees: 51-200 | Leatherhead, United Kingdom | 51-200 | Exact match | 136 contacts → |
“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 description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  IES Utilities Group LTDiesutilities.co.ukHQ: Manchester, United KingdomReported employees: 201-500 | Manchester, United Kingdom | 201-500 | Exact match | 135 contacts → |
“Originally established in 2018, the business was rebranded in 2020 as IES Utilities Group Ltd.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  ONE Utility Billoneutilitybill.coHQ: Newcastle Upon Tyne, United KingdomReported employees: 201-500 | Newcastle Upon Tyne, United Kingdom | 201-500 | Exact match | 119 contacts → |
“We make bills as easy as they should be.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Leep Utilitiesleeputilities.co.uk HQ: Salford, United KingdomReported employees: 51-200 | Salford, United Kingdom | 51-200 | Exact match | 109 contacts → |
“Leep Utilities (Leep) is a UK-based last-mile multi-utility company.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Independent Utility Advice LTDiuadvice.org.ukHQ: Newcastle Upon Tyne, United KingdomReported employees: 51-200 | Newcastle Upon Tyne, United Kingdom | 51-200 | Exact match | 98 contacts → |
“Procurement services from Independent Utility Advice can protect your company from rising business energy costs and fluctuating prices.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | OVO Energy LTDovoenergy.com HQ: Bristol, United KingdomReported employees: 1,001-5,000 | Bristol, United Kingdom | 1,001-5,000 | Exact match | 94 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 20 |  Homeboxhomebox.co.ukHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 68 contacts → |
“What we do We make managing utilities extraordinarily easy.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Last Mile Asset Management Limitedlastmile-uk.comHQ: Glasgow, United KingdomReported employees: 51-200 | Glasgow, United Kingdom | 51-200 | Exact match | 66 contacts → |
“We are an independent adopter of utility assets on behalf of our licensed operators Last Mile Electricity Ltd and Last Mile Gas Ltd.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Total Utility Connections LTDtucltd.co.uk HQ: Cardiff, United KingdomReported employees: 51-200 | Cardiff, United Kingdom | 51-200 | Exact match | 63 contacts → |
“We understand that there are a myriad of different options and avenues available when it comes to finding the best utility infrastructure solution for your development.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Yorkshire GAS And Powerygp.co.ukHQ: Leeds, United KingdomReported employees: 51-200 | Leeds, United Kingdom | 51-200 | Exact match | 60 contacts → |
“At Yorkshire Gas and Power, we do business energy differently.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Firmus Energyfirmusenergy.co.uk HQ: Northern Ireland, United KingdomReported employees: 51-200 | Northern Ireland, United Kingdom | 51-200 | Exact match | 57 contacts → |
“In March 2005, firmus energy was formally awarded supply and distribution licenses for the development of a natural gas network outside greater Belfast.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Indigo Networksindigonetworks.co.uk HQ: Reading, United KingdomReported employees: 51-200 | Reading, United Kingdom | 51-200 | Exact match | 48 contacts → |
“Indigo Networks invests in, adopts, owns and operates essential electricity, gas and water infrastructure and networks across the UK.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 260 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Utility companies: dataset insights
September 22, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
259 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 260 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 22, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for utility companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many utility companies did RevenueBase find based in the United Kingdom?
The saved snapshot records 260 matching company records, 39,887 tracked contacts and 16,936 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 22, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Utility companies by geography
- Utility companies based in Australia
- Utility companies based in Austria
- Utility companies based in Brazil
- Utility companies based in Canada
- Utility companies based in Colombia
- Utility companies based in Denmark
- Utility companies based in Finland
- Utility companies based in France
- Utility companies based in Germany
- Utility companies based in India
- Utility companies based in Italy
- Utility companies based in Norway
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 utility companies based in the United Kingdom. Snapshot: September 22, 2026. https://revenuebase.ai/companies/utility-companies/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 utility companies based in the United Kingdom
RevenueBase records 260 matching company records for utility companies based in the United Kingdom, with 39,887 tracked contacts and 16,936 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 22, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 utility companies based in the United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | National Gridnationalgrid.com HQ: London, United KingdomReported employees: 10001+ | London, United Kingdom | 10001+ | Exact match | 24,403 contacts → |
“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 description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Severn Trentseverntrent.com HQ: Coventry, United KingdomReported employees: 5,001-10,000 | Coventry, United Kingdom | 5,001-10,000 | Exact match | 5,563 contacts → |
“Water is wonderful.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Shell Energyshell.com HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 2,627 contacts → |
“We help businesses manage energy needs, boost efficiency, control costs and achieve decarbonisation goals for a better energy future.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Network Plusnetworkplus.co.uk HQ: Worsley, United KingdomReported employees: 5,001-10,000 | Worsley, United Kingdom | 5,001-10,000 | Exact match | 977 contacts → |
“Network Plus is a leading utility and infrastructure service provider, operating across the UK.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Utilita Energyutilita.co.uk HQ: Chandler's Ford, United KingdomReported employees: 1,001-5,000 | Chandler's Ford, United Kingdom | 1,001-5,000 | Exact match | 792 contacts → |
“Founded in 2003, Utilita Energy was created to challenge the Big 6 energy suppliers by empowering everyone with a fair and flexible service that’s good for the pocket and planet.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Wales & West Utilitieswwutilities.co.uk HQ: Newport, United KingdomReported employees: 1,001-5,000 | Newport, United Kingdom | 1,001-5,000 | Exact match | 762 contacts → |
“We are Wales & West Utilities, your gas emergency and pipeline service.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | GTCgtc-uk.co.uk HQ: Woolpit, United KingdomReported employees: 201-500 | Woolpit, United Kingdom | 201-500 | Exact match | 509 contacts → |
“GTC is the market leading independent utility infrastructure provider to: • National & regional house builders and developers.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Energy Assetsenergyassets.co.uk HQ: United KingdomReported employees: 501-1,000 | United Kingdom | 501-1,000 | Exact match | 396 contacts → |
“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 description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | South Staffs Watersouth-staffs-water.co.uk HQ: Walsall, United KingdomReported employees: 501-1,000 | Walsall, United Kingdom | 501-1,000 | Exact match | 238 contacts → |
“South Staffs Water is a private water company formed in 1853 to provide water to the inhabitants of the Black Country.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Clear Businessclearbusiness.co.uk HQ: Sale, United KingdomReported employees: 501-1,000 | Sale, United Kingdom | 501-1,000 | Exact match | 202 contacts → |
“We provide UK SMEs with telecoms, water, gas and electricity, payment services and business insurance.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Triconnex Limitedtriconnex.co.uk HQ: Braintree, United KingdomReported employees: 201-500 | Braintree, United Kingdom | 201-500 | Exact match | 158 contacts → |
“TriConnex are a leading provider of multi-utility services, working with residential housebuilders to connect Electricity, Water, Waste, and Fibre to their developments.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Ferns Groupfernsgroup.co.uk HQ: West Farleigh, United KingdomReported employees: 501-1,000 | West Farleigh, United Kingdom | 501-1,000 | Exact match | 147 contacts → |
“Ferns is one of the largest independent utility infrastructure services providers in the south of the UK.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | S&r Construction LTDsrconstructionltd.co.uk HQ: Brierley Hill, United KingdomReported employees: 201-500 | Brierley Hill, United Kingdom | 201-500 | Exact match | 137 contacts → |
“S&R Construction was founded in 1998 with a view to providing affordable, sustainable gas, water and electric mains and utility installation services for a broad range of clients.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | ESP Utilities Group LTDespug.com HQ: Leatherhead, United KingdomReported employees: 51-200 | Leatherhead, United Kingdom | 51-200 | Exact match | 136 contacts → |
“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 description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | IES Utilities Group LTDiesutilities.co.uk HQ: Manchester, United KingdomReported employees: 201-500 | Manchester, United Kingdom | 201-500 | Exact match | 135 contacts → |
“Originally established in 2018, the business was rebranded in 2020 as IES Utilities Group Ltd.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | ONE Utility Billoneutilitybill.co HQ: Newcastle Upon Tyne, United KingdomReported employees: 201-500 | Newcastle Upon Tyne, United Kingdom | 201-500 | Exact match | 119 contacts → |
“We make bills as easy as they should be.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Leep Utilitiesleeputilities.co.uk HQ: Salford, United KingdomReported employees: 51-200 | Salford, United Kingdom | 51-200 | Exact match | 109 contacts → |
“Leep Utilities (Leep) is a UK-based last-mile multi-utility company.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Independent Utility Advice LTDiuadvice.org.uk HQ: Newcastle Upon Tyne, United KingdomReported employees: 51-200 | Newcastle Upon Tyne, United Kingdom | 51-200 | Exact match | 98 contacts → |
“Procurement services from Independent Utility Advice can protect your company from rising business energy costs and fluctuating prices.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | OVO Energy LTDovoenergy.com HQ: Bristol, United KingdomReported employees: 1,001-5,000 | Bristol, United Kingdom | 1,001-5,000 | Exact match | 94 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 20 | Homeboxhomebox.co.uk HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 68 contacts → |
“What we do We make managing utilities extraordinarily easy.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Last Mile Asset Management Limitedlastmile-uk.com HQ: Glasgow, United KingdomReported employees: 51-200 | Glasgow, United Kingdom | 51-200 | Exact match | 66 contacts → |
“We are an independent adopter of utility assets on behalf of our licensed operators Last Mile Electricity Ltd and Last Mile Gas Ltd.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Total Utility Connections LTDtucltd.co.uk HQ: Cardiff, United KingdomReported employees: 51-200 | Cardiff, United Kingdom | 51-200 | Exact match | 63 contacts → |
“We understand that there are a myriad of different options and avenues available when it comes to finding the best utility infrastructure solution for your development.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Yorkshire GAS And Powerygp.co.uk HQ: Leeds, United KingdomReported employees: 51-200 | Leeds, United Kingdom | 51-200 | Exact match | 60 contacts → |
“At Yorkshire Gas and Power, we do business energy differently.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Firmus Energyfirmusenergy.co.uk HQ: Northern Ireland, United KingdomReported employees: 51-200 | Northern Ireland, United Kingdom | 51-200 | Exact match | 57 contacts → |
“In March 2005, firmus energy was formally awarded supply and distribution licenses for the development of a natural gas network outside greater Belfast.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Indigo Networksindigonetworks.co.uk HQ: Reading, United KingdomReported employees: 51-200 | Reading, United Kingdom | 51-200 | Exact match | 48 contacts → |
“Indigo Networks invests in, adopts, owns and operates essential electricity, gas and water infrastructure and networks across the UK.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 260 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Utility companies: dataset insights
September 22, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
259 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 260 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 22, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for utility companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many utility companies did RevenueBase find based in the United Kingdom?
The saved snapshot records 260 matching company records, 39,887 tracked contacts and 16,936 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 22, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Utility companies by geography
- Utility companies based in Australia
- Utility companies based in Austria
- Utility companies based in Brazil
- Utility companies based in Canada
- Utility companies based in Colombia
- Utility companies based in Denmark
- Utility companies based in Finland
- Utility companies based in France
- Utility companies based in Germany
- Utility companies based in India
- Utility companies based in Italy
- Utility companies based in Norway
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 utility companies based in the United Kingdom. Snapshot: September 22, 2026. https://revenuebase.ai/companies/utility-companies/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗