Company lists · Data refreshed October 2026
Top 25 Grid extension contractors based in the United Kingdom
RevenueBase identified 406 company matches for grid extension contractors associated with the United Kingdom as of October 2026 and tracks 6,899 professional contacts across them, including 1,484 with verified work emails. London is the largest hub.
This list covers company matches for grid extension contractors 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 October 13, 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 grid extension contractors based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 728 contacts → | ||||
Exact match “Freedom is a leading provider of facilities and power engineering services.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 2 | 313 contacts → | ||||
Exact match “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.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 3 | 194 contacts → | ||||
Exact match “IQA lead the way in designing, building, maintaining, and upgrading electrical utility networks, telecommunication networks, EVCP and electrical infrastructure for both the public…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 4 | 147 contacts → | ||||
Exact match “P.N.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 5 | 134 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 · Oct 13, 2026 · View company records in RevenueBase | |||||
| 6 | 127 contacts → | ||||
Exact match “Powered by People.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 7 | 110 contacts → | ||||
Exact match “Excalon is one of the Britain’s leading UK Electrical Utility Service Providers.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 8 | 104 contacts → | ||||
Exact match “Rock Power Connections are experts in electrical connections with a proven track record of quality and safety.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 9 | 81 contacts → | ||||
Exact match “Advantage NRG is a specialist, labour only, sub-contractor using its own skilled labour force to build and maintain electrical transmission systems.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 10 | 74 contacts → | ||||
Exact match “Infrastructure Gateway Ltd have been working with developers providing them with the expertise to deliver the utilities on construction projects for over 20 years.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 11 | 60 contacts → | ||||
Exact match “AUS is a specialist supplier to the electricity distribution and transmission, rail, utility arboricultural, and telecommunications industries.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 12 | 58 contacts → | ||||
Exact match “Avidety specialise in the construction and maintenance of overhead and underground electricity networks.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 13 | 54 contacts → | ||||
Exact match “Enrgy provide utility scale power infrastructure services up to 33KV for private generation customers.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 14 | 51 contacts → | ||||
Exact match “HVSS (High Voltage Substation Services) was formed in 2009 specializing in installation and commissioning of High Voltage Substations Systems up to 400kV.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 15 | 49 contacts → | ||||
Exact match “Acrastyle Limited (UK) is a resource-rich engineering company that designs, manufactures, tests, installs, commissions, and maintains high-voltage sub-station protection and…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 16 | 45 contacts → | ||||
Exact match “GTDS was established in July 2004 to provide specialist installation and commissioning services to the major manufacturers, National Grid and the Distribution Network Operators…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 17 | 44 contacts → | ||||
Exact match “Durkin and Sons have for 40 years been a go-to partner for National Grid, and DNO organisations, who continue to entrust the delivery of large HV & EHV cabling projects to us.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 18 | 40 contacts → | ||||
Exact match “Green Frog Connect are one of the leading providers of high-voltage connections to the electricity grid, specialising in building renewable and conventional power-generation…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 19 | 40 contacts → | ||||
Exact match “LUTON ENGINEERING SERVICES is a civil engineering company based out of 6 Swan Street, Manchester, United Kingdom.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 20 | 38 contacts → | ||||
Exact match “Specialising in High Voltage Substation Installation & Commissioning, Site & Project Management, Refurbishment, Maintenance, SES Ltd has established a solid reputation for…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 21 | 37 contacts → | ||||
Exact match “Forming part of the larger Bethell Group our Multi Utility division provides in-house Design & Construction throughout the North West, Wales and Yorkshire to major developers…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 22 | 35 contacts → | ||||
Exact match “A civil engineering and construction company specialising in the High Voltage and Extra High Voltage sectors, providing a range of services to clients such as National Grid…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 23 | 34 contacts → | ||||
Exact match “Electricity Asset Services specialise in Procurement, Design, Management and execution of all works associated with High and Low voltage Underground Electricity Networks on behalf…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 24 | 32 contacts → | ||||
Exact match “ISS Ltd are a HV/LV Power Engineering company operating nationwide, undertaking Turnkey Electrical Distribution Projects and Site Service activities, including installation…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 25 | 31 contacts → | ||||
Exact match “adi Electrical have been delivering high quality and reliable Electrical Installation services for over 25 years.” Recorded in the RevenueBase company graph · Oct 13, 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 “grid extension contractors”. 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 406 grid extension contractors based in the United Kingdom
See the full list, filter by size, metro and specialty, and access 1,484 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Grid extension contractors based in the United Kingdom at a glance
As of Oct 13, 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 406 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 “grid extension contractors” 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 1,484 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 October 13, 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 “grid extension contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many grid extension contractors are there based in the United Kingdom?
RevenueBase identified 406 company matches for grid extension contractors associated with the United Kingdom as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Freedom tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most grid extension contractors?
London leads with 20 company records, followed by Manchester (16) and Bristol (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 1,484 professional contacts with verified work emails tracked across these 406 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 October 13, 2026.
Ready to reach these companies? Verified emails and direct dials for all 406 grid extension contractors based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Grid extension contractors by geography
- Grid extension contractors based in Belo Horizonte, Brazil
- Grid extension contractors based in Sao Paulo, Brazil
- Grid extension contractors based in Houston, United States
- Grid extension contractors based in Argentina
- Grid extension contractors based in Australia
- Grid extension contractors based in Belgium
- Grid extension contractors based in Brazil
- Grid extension contractors based in Canada
- Grid extension contractors based in Chile
- Grid extension contractors based in Colombia
- Grid extension contractors based in Czechia
- Grid extension contractors based in Denmark
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
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Grid extension contractors based in Belo Horizonte, Brazil
- Grid extension contractors based in Sao Paulo, Brazil
- Grid extension contractors based in Houston, United States
- Grid extension contractors based in Argentina
- Grid extension contractors based in Australia
- Grid extension contractors based in Belgium
Company intelligence · public preview
Top 25 grid extension contractors 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 406 matching company records for grid extension contractors based in the United Kingdom, with 6,899 tracked contacts and 1,484 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: October 13, 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 grid extension contractors 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 |  Freedomngbailey.comHQ: Leeds, United KingdomReported employees: 1,001-5,000 | Leeds, United Kingdom | 1,001-5,000 | Exact match | 728 contacts → |
“Freedom is a leading provider of facilities and power engineering services.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Enerveoenerveo.comHQ: Birmingham, United KingdomReported employees: 1,001-5,000 | Birmingham, United Kingdom | 1,001-5,000 | Exact match | 313 contacts → |
“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.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | IQA Elecnoriqagroup.co.uk HQ: Glasgow, United KingdomReported employees: 201-500 | Glasgow, United Kingdom | 201-500 | Exact match | 194 contacts → |
“IQA lead the way in designing, building, maintaining, and upgrading electrical utility networks, telecommunication networks, EVCP and electrical infrastructure for both the public…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  PN Daly Limitedpndaly.co.ukHQ: Rochdale, United KingdomReported employees: 501-1,000 | Rochdale, United Kingdom | 501-1,000 | Exact match | 147 contacts → |
“P.N.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  S&r Construction LTDsrconstructionltd.co.ukHQ: Brierley Hill, United KingdomReported employees: 201-500 | Brierley Hill, United Kingdom | 201-500 | Exact match | 134 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 · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Powersystemspowersystemsuk.co.ukHQ: Bristol, United KingdomReported employees: 51-200 | Bristol, United Kingdom | 51-200 | Exact match | 127 contacts → |
“Powered by People.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Excalon LTDexcalon.com HQ: Salford, United KingdomReported employees: 201-500 | Salford, United Kingdom | 201-500 | Exact match | 110 contacts → |
“Excalon is one of the Britain’s leading UK Electrical Utility Service Providers.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Rock Power Connections LTDrockpowerconnections.co.ukHQ: Bromsgrove, United KingdomReported employees: 51-200 | Bromsgrove, United Kingdom | 51-200 | Exact match | 104 contacts → |
“Rock Power Connections are experts in electrical connections with a proven track record of quality and safety.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Advantage NRGadvantage-nrg.comHQ: Chorley, United KingdomReported employees: 51-200 | Chorley, United Kingdom | 51-200 | Exact match | 81 contacts → |
“Advantage NRG is a specialist, labour only, sub-contractor using its own skilled labour force to build and maintain electrical transmission systems.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Infrastructure Gateway LTDigl.co.uk HQ: Kettering, United KingdomReported employees: 51-200 | Kettering, United Kingdom | 51-200 | Exact match | 74 contacts → |
“Infrastructure Gateway Ltd have been working with developers providing them with the expertise to deliver the utilities on construction projects for over 20 years.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | AUS LTDaus.co.uk HQ: Clayton West, United KingdomReported employees: 51-200 | Clayton West, United Kingdom | 51-200 | Exact match | 60 contacts → |
“AUS is a specialist supplier to the electricity distribution and transmission, rail, utility arboricultural, and telecommunications industries.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Avidetyavidety.co.ukHQ: Sittingbourne, United KingdomReported employees: 51-200 | Sittingbourne, United Kingdom | 51-200 | Exact match | 58 contacts → |
“Avidety specialise in the construction and maintenance of overhead and underground electricity networks.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | ENRGYenrgy.biz HQ: Crewe, United KingdomReported employees: 11-50 | Crewe, United Kingdom | 11-50 | Exact match | 54 contacts → |
“Enrgy provide utility scale power infrastructure services up to 33KV for private generation customers.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | HQ: Watford, United KingdomReported employees: 11-50 | Watford, United Kingdom | 11-50 | Exact match | 51 contacts → |
“HVSS (High Voltage Substation Services) was formed in 2009 specializing in installation and commissioning of High Voltage Substations Systems up to 400kV.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Acrastyle Limitedacrastyle.co.ukHQ: Ulverston, United KingdomReported employees: 51-200 | Ulverston, United Kingdom | 51-200 | Exact match | 49 contacts → |
“Acrastyle Limited (UK) is a resource-rich engineering company that designs, manufactures, tests, installs, commissions, and maintains high-voltage sub-station protection and…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | GTDSgtds.co.uk HQ: Hill, United KingdomReported employees: 51-200 | Hill, United Kingdom | 51-200 | Exact match | 45 contacts → |
“GTDS was established in July 2004 to provide specialist installation and commissioning services to the major manufacturers, National Grid and the Distribution Network Operators…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Durkin And Sons Power And Civil Engineersdurkinandsons.co.ukHQ: Perivale, United KingdomReported employees: 51-200 | Perivale, United Kingdom | 51-200 | Exact match | 44 contacts → |
“Durkin and Sons have for 40 years been a go-to partner for National Grid, and DNO organisations, who continue to entrust the delivery of large HV & EHV cabling projects to us.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Green Frog Connectgreenfrogconnect.co.uk HQ: Weston-super-mare, United KingdomReported employees: 11-50 | Weston-super-mare, United Kingdom | 11-50 | Exact match | 40 contacts → |
“Green Frog Connect are one of the leading providers of high-voltage connections to the electricity grid, specialising in building renewable and conventional power-generation…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Luton Engineering Servicesluton-eng.comHQ: Manchester, United KingdomReported employees: 11-50 | Manchester, United Kingdom | 11-50 | Exact match | 40 contacts → |
“LUTON ENGINEERING SERVICES is a civil engineering company based out of 6 Swan Street, Manchester, United Kingdom.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Substation Engineering Services LTDses-limited.com HQ: Stafford, United KingdomReported employees: 11-50 | Stafford, United Kingdom | 11-50 | Exact match | 38 contacts → |
“Specialising in High Voltage Substation Installation & Commissioning, Site & Project Management, Refurbishment, Maintenance, SES Ltd has established a solid reputation for…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Bethell Utility Services Limitedbethell.co.ukHQ: Manchester, United KingdomReported employees: 51-200 | Manchester, United Kingdom | 51-200 | Exact match | 37 contacts → |
“Forming part of the larger Bethell Group our Multi Utility division provides in-house Design & Construction throughout the North West, Wales and Yorkshire to major developers…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Neary Constructionneary.co.ukHQ: Wigan, United KingdomReported employees: 51-200 | Wigan, United Kingdom | 51-200 | Exact match | 35 contacts → |
“A civil engineering and construction company specialising in the High Voltage and Extra High Voltage sectors, providing a range of services to clients such as National Grid…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Electricity Asset Serviceselectricityassetservices.com HQ: Dunfermline, United KingdomReported employees: 51-200 | Dunfermline, United Kingdom | 51-200 | Exact match | 34 contacts → |
“Electricity Asset Services specialise in Procurement, Design, Management and execution of all works associated with High and Low voltage Underground Electricity Networks on behalf…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Industrial Switchgear Services LTDiss-services.co.ukHQ: Hyde, United KingdomReported employees: 51-200 | Hyde, United Kingdom | 51-200 | Exact match | 32 contacts → |
“ISS Ltd are a HV/LV Power Engineering company operating nationwide, undertaking Turnkey Electrical Distribution Projects and Site Service activities, including installation…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  ADI Electricaladiltd.co.ukHQ: Kings Norton, United KingdomReported employees: 201-500 | Kings Norton, United Kingdom | 201-500 | Exact match | 31 contacts → |
“adi Electrical have been delivering high quality and reliable Electrical Installation services for over 25 years.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 406 company matches
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Grid extension contractors: dataset insights
October 13, 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
398 records in the displayed employee bands.
8 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 406 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: October 13, 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 grid extension contractors?
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 grid extension contractors did RevenueBase find based in the United Kingdom?
The saved snapshot records 406 matching company records, 6,899 tracked contacts and 1,484 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: October 13, 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
Grid extension contractors by geography
- Grid extension contractors based in Belo Horizonte, Brazil
- Grid extension contractors based in Sao Paulo, Brazil
- Grid extension contractors based in Houston, United States
- Grid extension contractors based in Argentina
- Grid extension contractors based in Australia
- Grid extension contractors based in Belgium
- Grid extension contractors based in Brazil
- Grid extension contractors based in Canada
- Grid extension contractors based in Chile
- Grid extension contractors based in Colombia
- Grid extension contractors based in Czechia
- Grid extension contractors based in Denmark
Cite this list
RevenueBase Data Team. Top 25 grid extension contractors based in the United Kingdom. Snapshot: October 13, 2026. https://revenuebase.ai/companies/grid-extension-contractors/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
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Grid extension contractors based in Belo Horizonte, Brazil
- Grid extension contractors based in Sao Paulo, Brazil
- Grid extension contractors based in Houston, United States
- Grid extension contractors based in Argentina
- Grid extension contractors based in Australia
- Grid extension contractors based in Belgium
Company intelligence · public preview
Top 25 grid extension contractors based in the United Kingdom
RevenueBase records 406 matching company records for grid extension contractors based in the United Kingdom, with 6,899 tracked contacts and 1,484 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: October 13, 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 grid extension contractors 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 | Freedomngbailey.com HQ: Leeds, United KingdomReported employees: 1,001-5,000 | Leeds, United Kingdom | 1,001-5,000 | Exact match | 728 contacts → |
“Freedom is a leading provider of facilities and power engineering services.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Enerveoenerveo.com HQ: Birmingham, United KingdomReported employees: 1,001-5,000 | Birmingham, United Kingdom | 1,001-5,000 | Exact match | 313 contacts → |
“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.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | IQA Elecnoriqagroup.co.uk HQ: Glasgow, United KingdomReported employees: 201-500 | Glasgow, United Kingdom | 201-500 | Exact match | 194 contacts → |
“IQA lead the way in designing, building, maintaining, and upgrading electrical utility networks, telecommunication networks, EVCP and electrical infrastructure for both the public…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | PN Daly Limitedpndaly.co.uk HQ: Rochdale, United KingdomReported employees: 501-1,000 | Rochdale, United Kingdom | 501-1,000 | Exact match | 147 contacts → |
“P.N.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | S&r Construction LTDsrconstructionltd.co.uk HQ: Brierley Hill, United KingdomReported employees: 201-500 | Brierley Hill, United Kingdom | 201-500 | Exact match | 134 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 · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Powersystemspowersystemsuk.co.uk HQ: Bristol, United KingdomReported employees: 51-200 | Bristol, United Kingdom | 51-200 | Exact match | 127 contacts → |
“Powered by People.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Excalon LTDexcalon.com HQ: Salford, United KingdomReported employees: 201-500 | Salford, United Kingdom | 201-500 | Exact match | 110 contacts → |
“Excalon is one of the Britain’s leading UK Electrical Utility Service Providers.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Rock Power Connections LTDrockpowerconnections.co.uk HQ: Bromsgrove, United KingdomReported employees: 51-200 | Bromsgrove, United Kingdom | 51-200 | Exact match | 104 contacts → |
“Rock Power Connections are experts in electrical connections with a proven track record of quality and safety.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Advantage NRGadvantage-nrg.com HQ: Chorley, United KingdomReported employees: 51-200 | Chorley, United Kingdom | 51-200 | Exact match | 81 contacts → |
“Advantage NRG is a specialist, labour only, sub-contractor using its own skilled labour force to build and maintain electrical transmission systems.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Infrastructure Gateway LTDigl.co.uk HQ: Kettering, United KingdomReported employees: 51-200 | Kettering, United Kingdom | 51-200 | Exact match | 74 contacts → |
“Infrastructure Gateway Ltd have been working with developers providing them with the expertise to deliver the utilities on construction projects for over 20 years.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | AUS LTDaus.co.uk HQ: Clayton West, United KingdomReported employees: 51-200 | Clayton West, United Kingdom | 51-200 | Exact match | 60 contacts → |
“AUS is a specialist supplier to the electricity distribution and transmission, rail, utility arboricultural, and telecommunications industries.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Avidetyavidety.co.uk HQ: Sittingbourne, United KingdomReported employees: 51-200 | Sittingbourne, United Kingdom | 51-200 | Exact match | 58 contacts → |
“Avidety specialise in the construction and maintenance of overhead and underground electricity networks.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | ENRGYenrgy.biz HQ: Crewe, United KingdomReported employees: 11-50 | Crewe, United Kingdom | 11-50 | Exact match | 54 contacts → |
“Enrgy provide utility scale power infrastructure services up to 33KV for private generation customers.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | HQ: Watford, United KingdomReported employees: 11-50 | Watford, United Kingdom | 11-50 | Exact match | 51 contacts → |
“HVSS (High Voltage Substation Services) was formed in 2009 specializing in installation and commissioning of High Voltage Substations Systems up to 400kV.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Acrastyle Limitedacrastyle.co.uk HQ: Ulverston, United KingdomReported employees: 51-200 | Ulverston, United Kingdom | 51-200 | Exact match | 49 contacts → |
“Acrastyle Limited (UK) is a resource-rich engineering company that designs, manufactures, tests, installs, commissions, and maintains high-voltage sub-station protection and…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | GTDSgtds.co.uk HQ: Hill, United KingdomReported employees: 51-200 | Hill, United Kingdom | 51-200 | Exact match | 45 contacts → |
“GTDS was established in July 2004 to provide specialist installation and commissioning services to the major manufacturers, National Grid and the Distribution Network Operators…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Durkin And Sons Power And Civil Engineersdurkinandsons.co.uk HQ: Perivale, United KingdomReported employees: 51-200 | Perivale, United Kingdom | 51-200 | Exact match | 44 contacts → |
“Durkin and Sons have for 40 years been a go-to partner for National Grid, and DNO organisations, who continue to entrust the delivery of large HV & EHV cabling projects to us.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Green Frog Connectgreenfrogconnect.co.uk HQ: Weston-super-mare, United KingdomReported employees: 11-50 | Weston-super-mare, United Kingdom | 11-50 | Exact match | 40 contacts → |
“Green Frog Connect are one of the leading providers of high-voltage connections to the electricity grid, specialising in building renewable and conventional power-generation…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Luton Engineering Servicesluton-eng.com HQ: Manchester, United KingdomReported employees: 11-50 | Manchester, United Kingdom | 11-50 | Exact match | 40 contacts → |
“LUTON ENGINEERING SERVICES is a civil engineering company based out of 6 Swan Street, Manchester, United Kingdom.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Substation Engineering Services LTDses-limited.com HQ: Stafford, United KingdomReported employees: 11-50 | Stafford, United Kingdom | 11-50 | Exact match | 38 contacts → |
“Specialising in High Voltage Substation Installation & Commissioning, Site & Project Management, Refurbishment, Maintenance, SES Ltd has established a solid reputation for…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Bethell Utility Services Limitedbethell.co.uk HQ: Manchester, United KingdomReported employees: 51-200 | Manchester, United Kingdom | 51-200 | Exact match | 37 contacts → |
“Forming part of the larger Bethell Group our Multi Utility division provides in-house Design & Construction throughout the North West, Wales and Yorkshire to major developers…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Neary Constructionneary.co.uk HQ: Wigan, United KingdomReported employees: 51-200 | Wigan, United Kingdom | 51-200 | Exact match | 35 contacts → |
“A civil engineering and construction company specialising in the High Voltage and Extra High Voltage sectors, providing a range of services to clients such as National Grid…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Electricity Asset Serviceselectricityassetservices.com HQ: Dunfermline, United KingdomReported employees: 51-200 | Dunfermline, United Kingdom | 51-200 | Exact match | 34 contacts → |
“Electricity Asset Services specialise in Procurement, Design, Management and execution of all works associated with High and Low voltage Underground Electricity Networks on behalf…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Industrial Switchgear Services LTDiss-services.co.uk HQ: Hyde, United KingdomReported employees: 51-200 | Hyde, United Kingdom | 51-200 | Exact match | 32 contacts → |
“ISS Ltd are a HV/LV Power Engineering company operating nationwide, undertaking Turnkey Electrical Distribution Projects and Site Service activities, including installation…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | ADI Electricaladiltd.co.uk HQ: Kings Norton, United KingdomReported employees: 201-500 | Kings Norton, United Kingdom | 201-500 | Exact match | 31 contacts → |
“adi Electrical have been delivering high quality and reliable Electrical Installation services for over 25 years.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 406 company matches
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Grid extension contractors: dataset insights
October 13, 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
398 records in the displayed employee bands.
8 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 406 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: October 13, 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 grid extension contractors?
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 grid extension contractors did RevenueBase find based in the United Kingdom?
The saved snapshot records 406 matching company records, 6,899 tracked contacts and 1,484 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: October 13, 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.
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Cite this list
RevenueBase Data Team. Top 25 grid extension contractors based in the United Kingdom. Snapshot: October 13, 2026. https://revenuebase.ai/companies/grid-extension-contractors/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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