Company lists · Data refreshed November 2026
Top 25 Substation testing companies based in the United Kingdom
RevenueBase identified 359 company matches for substation testing companies associated with the United Kingdom as of November 2026 and tracks 3,230 professional contacts across them, including 1,043 with verified work emails. London is the largest hub.
This list covers company matches for substation testing 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 November 6, 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 substation testing companies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 456 contacts → | ||||
Exact match “Quartzelec is a leading independent electrical engineering group delivering solutions and services in both UK and global markets.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 110 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 56 contacts → | ||||
Exact match “RJ Power Group is a specialist electrical contracting business, providing engineering solutions in the power sector.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 54 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 52 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 40 contacts → | ||||
Exact match “Established over 20 years ago by our Chairman, F.E.S.(EX) is a leading provider of a range of E, I&M services for all industries across both hazardous and non- hazardous…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 40 contacts → | ||||
Exact match “Calbarrie Compliance Services Ltd (Calbarrie) is the UK’s market leader in electrical compliance services and has been trading within the Health & Safety and Compliance sectors…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 39 contacts → | ||||
Exact match “Keeping power, water, and rail moving since 1966.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 39 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 35 contacts → | ||||
Exact match “For the last 25 years, Group Management Electrical Surveys have been providing Electrical Inspection, Test and Documentation services to many of the UK's leading companies.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 33 contacts → | ||||
Exact match “Our scope of services extends across the full project lifecycle, from feasibility studies and design, through to installation, commissioning, ongoing routine and reactive…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 32 contacts → | ||||
Exact match “Ashby Electrical provide a complete range of electrical design, installation, testing, inspection and maintenance services nationwide.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 30 contacts → | ||||
Exact match “3ECO Ltd is a consultancy firm that operates in the electrical and railway sectors.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 29 contacts → | ||||
Exact match “DAGEM Power are a dynamic and fast-growing SME at the forefront of bringing new renewable and nuclear energy projects online.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 29 contacts → | ||||
Exact match “Established in 1989 Target Site Services are an Electrical & Mechanical Engineering Company who for over twenty-five years have been providing a first-class service to the…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 26 contacts → | ||||
Exact match “John Robson Metals Ltd has been at the forefront of safe dismantling and demolition in the Electrical Supply Industry for over 50 years.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 25 contacts → | ||||
Exact match “Substation Project Support: Project & Site Management, Civils & M&E Installation Teams.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 25 contacts → | ||||
Exact match “At ICS, part of United Infrastructure Group, we power the future with innovative, high-voltage electrical solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 22 contacts → | ||||
Exact match “REDAS Engineering & Construction is a team of experienced professionals with more than a decade experience in substation tendering, procurement, design, Installation, and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 21 contacts → | ||||
Exact match “Valen Power Engineering Ltd provides electrical engineering solutions for systems ranging from LV to 400kV.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 21 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 20 contacts → | ||||
Exact match “Northern HV are a team of highly skilled professionals with many years of High Voltage and Electrical Commissioning experience.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 20 contacts → | ||||
Exact match “Our distinct expertise lies in designing, engineering, maintaining, installing, testing and commissioning high-voltage substations, electrical transmission and distribution…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 19 contacts → | ||||
Exact match “Primary Power Consulting is a UK‑based power engineering and project management consultancy specialising in the delivery of complex HV and EHV electricity infrastructure.” Recorded in the RevenueBase company graph · Nov 6, 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 “substation testing 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 359 substation testing companies based in the United Kingdom
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Substation testing companies based in the United Kingdom at a glance
As of Nov 6, 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 359 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 “substation testing 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 1,043 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 November 6, 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 “substation testing companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many substation testing companies are there based in the United Kingdom?
RevenueBase identified 359 company matches for substation testing companies associated with the United Kingdom as of November 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?
Quartzelec Limited tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most substation testing companies?
London leads with 22 company records, followed by Manchester (15) and Glasgow (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 1,043 professional contacts with verified work emails tracked across these 359 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 November 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 359 substation testing companies based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Substation testing companies by geography
- Substation testing companies based in Sao Paulo, Brazil
- Substation testing companies based in Australia
- Substation testing companies based in Brazil
- Substation testing companies based in Canada
- Substation testing companies based in Chile
- Substation testing companies based in Colombia
- Substation testing companies based in France
- Substation testing companies based in Germany
- Substation testing companies based in India
- Substation testing companies based in Italy
- Substation testing companies based in Mexico
- Substation testing companies based in the Netherlands
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
- Substation testing companies based in Sao Paulo, Brazil
- Substation testing companies based in Australia
- Substation testing companies based in Brazil
- Substation testing companies based in Canada
- Substation testing companies based in Chile
- Substation testing companies based in Colombia
Company intelligence · public preview
Top 25 substation testing 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 359 matching company records for substation testing companies based in the United Kingdom, with 3,230 tracked contacts and 1,043 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: November 6, 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 substation testing 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 |  Quartzelec Limitedquartzelec.comHQ: Rugby, United KingdomReported employees: 501-1,000 | Rugby, United Kingdom | 501-1,000 | Exact match | 456 contacts → |
“Quartzelec is a leading independent electrical engineering group delivering solutions and services in both UK and global markets.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Rock Power Connections LTDrockpowerconnections.co.ukHQ: Bromsgrove, United KingdomReported employees: 51-200 | Bromsgrove, United Kingdom | 51-200 | Exact match | 110 contacts → |
“Rock Power Connections are experts in electrical connections with a proven track record of quality and safety.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  RJ Powerrjpowernetworks.co.ukHQ: Sidcup, United KingdomReported employees: 51-200 | Sidcup, United Kingdom | 51-200 | Exact match | 56 contacts → |
“RJ Power Group is a specialist electrical contracting business, providing engineering solutions in the power sector.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Acrastyle Limitedacrastyle.co.ukHQ: Ulverston, United KingdomReported employees: 51-200 | Ulverston, United Kingdom | 51-200 | Exact match | 54 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | HQ: Watford, United KingdomReported employees: 11-50 | Watford, United Kingdom | 11-50 | Exact match | 52 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  F.E.S. EX Limitedfes-ex.comHQ: Grimsby, United KingdomReported employees: 51-200 | Grimsby, United Kingdom | 51-200 | Exact match | 40 contacts → |
“Established over 20 years ago by our Chairman, F.E.S.(EX) is a leading provider of a range of E, I&M services for all industries across both hazardous and non- hazardous…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Calbarrie Compliance Services LTDcalbarrie.comHQ: Cheltenham, United KingdomReported employees: 51-200 | Cheltenham, United Kingdom | 51-200 | Exact match | 40 contacts → |
“Calbarrie Compliance Services Ltd (Calbarrie) is the UK’s market leader in electrical compliance services and has been trading within the Health & Safety and Compliance sectors…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  EMI Co. LTDeminst.co.ukHQ: Gainsborough, United KingdomReported employees: 51-200 | Gainsborough, United Kingdom | 51-200 | Exact match | 39 contacts → |
“Keeping power, water, and rail moving since 1966.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Substation Engineering Services LTDses-limited.comHQ: Stafford, United KingdomReported employees: 11-50 | Stafford, United Kingdom | 11-50 | Exact match | 39 contacts → |
“Specialising in High Voltage Substation Installation & Commissioning, Site & Project Management, Refurbishment, Maintenance, SES Ltd has established a solid reputation for…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Group Management Electrical Surveys Limitedgroupmanagement.comHQ: Halifax, United KingdomReported employees: 11-50 | Halifax, United Kingdom | 11-50 | Exact match | 35 contacts → |
“For the last 25 years, Group Management Electrical Surveys have been providing Electrical Inspection, Test and Documentation services to many of the UK's leading companies.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Integrum Power Engineeringintegrumpower.co.uk HQ: Stockport Cheshire, United KingdomReported employees: 51-200 | Stockport Cheshire, United Kingdom | 51-200 | Exact match | 33 contacts → |
“Our scope of services extends across the full project lifecycle, from feasibility studies and design, through to installation, commissioning, ongoing routine and reactive…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Ashby Electrical Limitedashbyelectrical.co.ukHQ: Pelsall, United KingdomReported employees: 11-50 | Pelsall, United Kingdom | 11-50 | Exact match | 32 contacts → |
“Ashby Electrical provide a complete range of electrical design, installation, testing, inspection and maintenance services nationwide.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  3eco LTD3eco.ukHQ: Witney, United KingdomReported employees: 11-50 | Witney, United Kingdom | 11-50 | Exact match | 30 contacts → |
“3ECO Ltd is a consultancy firm that operates in the electrical and railway sectors.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Dagem Powerdagem.co.ukHQ: Cannock, United KingdomReported employees: 11-50 | Cannock, United Kingdom | 11-50 | Exact match | 29 contacts → |
“DAGEM Power are a dynamic and fast-growing SME at the forefront of bringing new renewable and nuclear energy projects online.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Target Site Services LTDtargetsiteservices.co.ukHQ: Datchet, United KingdomReported employees: 51-200 | Datchet, United Kingdom | 51-200 | Exact match | 29 contacts → |
“Established in 1989 Target Site Services are an Electrical & Mechanical Engineering Company who for over twenty-five years have been providing a first-class service to the…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  John Robson Metals LTDjohnrobsonmetals.co.ukHQ: Preston, United KingdomReported employees: 51-200 | Preston, United Kingdom | 51-200 | Exact match | 26 contacts → |
“John Robson Metals Ltd has been at the forefront of safe dismantling and demolition in the Electrical Supply Industry for over 50 years.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Winshall LTDwinshall.co.ukHQ: Llantrisant, United KingdomReported employees: 11-50 | Llantrisant, United Kingdom | 11-50 | Exact match | 25 contacts → |
“Substation Project Support: Project & Site Management, Civils & M&E Installation Teams.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Instrument & Control Services ICS LTDicsluk.comHQ: Stoke On Trent, United KingdomReported employees: 51-200 | Stoke On Trent, United Kingdom | 51-200 | Exact match | 25 contacts → |
“At ICS, part of United Infrastructure Group, we power the future with innovative, high-voltage electrical solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Redas Engineering & Constructionredas.co.ukHQ: Staffordshire, United KingdomReported employees: 11-50 | Staffordshire, United Kingdom | 11-50 | Exact match | 22 contacts → |
“REDAS Engineering & Construction is a team of experienced professionals with more than a decade experience in substation tendering, procurement, design, Installation, and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Valen Power Engineering LTDvpel.co.ukHQ: Manchester, United KingdomReported employees: 11-50 | Manchester, United Kingdom | 11-50 | Exact match | 21 contacts → |
“Valen Power Engineering Ltd provides electrical engineering solutions for systems ranging from LV to 400kV.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Site Energy Services Limitedsiteenergyservices.co.uk HQ: Newcastle Under Lyme, United KingdomReported employees: 11-50 | Newcastle Under Lyme, United Kingdom | 11-50 | Exact match | 21 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 23 |  Northernhvnorthernhv.co.ukHQ: Hartlepool, United KingdomReported employees: 1-10 | Hartlepool, United Kingdom | 1-10 | Exact match | 20 contacts → |
“Northern HV are a team of highly skilled professionals with many years of High Voltage and Electrical Commissioning experience.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  HV Energy Solutions LTDhvenergysolutions.co.ukHQ: Norwich, United KingdomReported employees: 11-50 | Norwich, United Kingdom | 11-50 | Exact match | 20 contacts → |
“Our distinct expertise lies in designing, engineering, maintaining, installing, testing and commissioning high-voltage substations, electrical transmission and distribution…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Primary Power Consultingprimarypower.co.ukHQ: Cheadle, United KingdomReported employees: 11-50 | Cheadle, United Kingdom | 11-50 | Exact match | 19 contacts → |
“Primary Power Consulting is a UK‑based power engineering and project management consultancy specialising in the delivery of complex HV and EHV electricity infrastructure.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 359 company matches
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Substation testing companies: dataset insights
November 6, 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
353 records in the displayed employee bands.
6 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 359 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: November 6, 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 substation testing 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 substation testing companies did RevenueBase find based in the United Kingdom?
The saved snapshot records 359 matching company records, 3,230 tracked contacts and 1,043 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: November 6, 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
Substation testing companies by geography
- Substation testing companies based in Sao Paulo, Brazil
- Substation testing companies based in Australia
- Substation testing companies based in Brazil
- Substation testing companies based in Canada
- Substation testing companies based in Chile
- Substation testing companies based in Colombia
- Substation testing companies based in France
- Substation testing companies based in Germany
- Substation testing companies based in India
- Substation testing companies based in Italy
- Substation testing companies based in Mexico
- Substation testing companies based in the Netherlands
Cite this list
RevenueBase Data Team. Top 25 substation testing companies based in the United Kingdom. Snapshot: November 6, 2026. https://revenuebase.ai/companies/substation-testing-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
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Substation testing companies based in Sao Paulo, Brazil
- Substation testing companies based in Australia
- Substation testing companies based in Brazil
- Substation testing companies based in Canada
- Substation testing companies based in Chile
- Substation testing companies based in Colombia
Company intelligence · public preview
Top 25 substation testing companies based in the United Kingdom
RevenueBase records 359 matching company records for substation testing companies based in the United Kingdom, with 3,230 tracked contacts and 1,043 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: November 6, 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 substation testing 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 | Quartzelec Limitedquartzelec.com HQ: Rugby, United KingdomReported employees: 501-1,000 | Rugby, United Kingdom | 501-1,000 | Exact match | 456 contacts → |
“Quartzelec is a leading independent electrical engineering group delivering solutions and services in both UK and global markets.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Rock Power Connections LTDrockpowerconnections.co.uk HQ: Bromsgrove, United KingdomReported employees: 51-200 | Bromsgrove, United Kingdom | 51-200 | Exact match | 110 contacts → |
“Rock Power Connections are experts in electrical connections with a proven track record of quality and safety.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | RJ Powerrjpowernetworks.co.uk HQ: Sidcup, United KingdomReported employees: 51-200 | Sidcup, United Kingdom | 51-200 | Exact match | 56 contacts → |
“RJ Power Group is a specialist electrical contracting business, providing engineering solutions in the power sector.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Acrastyle Limitedacrastyle.co.uk HQ: Ulverston, United KingdomReported employees: 51-200 | Ulverston, United Kingdom | 51-200 | Exact match | 54 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | HQ: Watford, United KingdomReported employees: 11-50 | Watford, United Kingdom | 11-50 | Exact match | 52 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | F.E.S. EX Limitedfes-ex.com HQ: Grimsby, United KingdomReported employees: 51-200 | Grimsby, United Kingdom | 51-200 | Exact match | 40 contacts → |
“Established over 20 years ago by our Chairman, F.E.S.(EX) is a leading provider of a range of E, I&M services for all industries across both hazardous and non- hazardous…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Calbarrie Compliance Services LTDcalbarrie.com HQ: Cheltenham, United KingdomReported employees: 51-200 | Cheltenham, United Kingdom | 51-200 | Exact match | 40 contacts → |
“Calbarrie Compliance Services Ltd (Calbarrie) is the UK’s market leader in electrical compliance services and has been trading within the Health & Safety and Compliance sectors…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | EMI Co. LTDeminst.co.uk HQ: Gainsborough, United KingdomReported employees: 51-200 | Gainsborough, United Kingdom | 51-200 | Exact match | 39 contacts → |
“Keeping power, water, and rail moving since 1966.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Substation Engineering Services LTDses-limited.com HQ: Stafford, United KingdomReported employees: 11-50 | Stafford, United Kingdom | 11-50 | Exact match | 39 contacts → |
“Specialising in High Voltage Substation Installation & Commissioning, Site & Project Management, Refurbishment, Maintenance, SES Ltd has established a solid reputation for…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Group Management Electrical Surveys Limitedgroupmanagement.com HQ: Halifax, United KingdomReported employees: 11-50 | Halifax, United Kingdom | 11-50 | Exact match | 35 contacts → |
“For the last 25 years, Group Management Electrical Surveys have been providing Electrical Inspection, Test and Documentation services to many of the UK's leading companies.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Integrum Power Engineeringintegrumpower.co.uk HQ: Stockport Cheshire, United KingdomReported employees: 51-200 | Stockport Cheshire, United Kingdom | 51-200 | Exact match | 33 contacts → |
“Our scope of services extends across the full project lifecycle, from feasibility studies and design, through to installation, commissioning, ongoing routine and reactive…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Ashby Electrical Limitedashbyelectrical.co.uk HQ: Pelsall, United KingdomReported employees: 11-50 | Pelsall, United Kingdom | 11-50 | Exact match | 32 contacts → |
“Ashby Electrical provide a complete range of electrical design, installation, testing, inspection and maintenance services nationwide.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | 3eco LTD3eco.uk HQ: Witney, United KingdomReported employees: 11-50 | Witney, United Kingdom | 11-50 | Exact match | 30 contacts → |
“3ECO Ltd is a consultancy firm that operates in the electrical and railway sectors.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Dagem Powerdagem.co.uk HQ: Cannock, United KingdomReported employees: 11-50 | Cannock, United Kingdom | 11-50 | Exact match | 29 contacts → |
“DAGEM Power are a dynamic and fast-growing SME at the forefront of bringing new renewable and nuclear energy projects online.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Target Site Services LTDtargetsiteservices.co.uk HQ: Datchet, United KingdomReported employees: 51-200 | Datchet, United Kingdom | 51-200 | Exact match | 29 contacts → |
“Established in 1989 Target Site Services are an Electrical & Mechanical Engineering Company who for over twenty-five years have been providing a first-class service to the…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | John Robson Metals LTDjohnrobsonmetals.co.uk HQ: Preston, United KingdomReported employees: 51-200 | Preston, United Kingdom | 51-200 | Exact match | 26 contacts → |
“John Robson Metals Ltd has been at the forefront of safe dismantling and demolition in the Electrical Supply Industry for over 50 years.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Winshall LTDwinshall.co.uk HQ: Llantrisant, United KingdomReported employees: 11-50 | Llantrisant, United Kingdom | 11-50 | Exact match | 25 contacts → |
“Substation Project Support: Project & Site Management, Civils & M&E Installation Teams.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Instrument & Control Services ICS LTDicsluk.com HQ: Stoke On Trent, United KingdomReported employees: 51-200 | Stoke On Trent, United Kingdom | 51-200 | Exact match | 25 contacts → |
“At ICS, part of United Infrastructure Group, we power the future with innovative, high-voltage electrical solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Redas Engineering & Constructionredas.co.uk HQ: Staffordshire, United KingdomReported employees: 11-50 | Staffordshire, United Kingdom | 11-50 | Exact match | 22 contacts → |
“REDAS Engineering & Construction is a team of experienced professionals with more than a decade experience in substation tendering, procurement, design, Installation, and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Valen Power Engineering LTDvpel.co.uk HQ: Manchester, United KingdomReported employees: 11-50 | Manchester, United Kingdom | 11-50 | Exact match | 21 contacts → |
“Valen Power Engineering Ltd provides electrical engineering solutions for systems ranging from LV to 400kV.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Site Energy Services Limitedsiteenergyservices.co.uk HQ: Newcastle Under Lyme, United KingdomReported employees: 11-50 | Newcastle Under Lyme, United Kingdom | 11-50 | Exact match | 21 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 23 | Northernhvnorthernhv.co.uk HQ: Hartlepool, United KingdomReported employees: 1-10 | Hartlepool, United Kingdom | 1-10 | Exact match | 20 contacts → |
“Northern HV are a team of highly skilled professionals with many years of High Voltage and Electrical Commissioning experience.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | HV Energy Solutions LTDhvenergysolutions.co.uk HQ: Norwich, United KingdomReported employees: 11-50 | Norwich, United Kingdom | 11-50 | Exact match | 20 contacts → |
“Our distinct expertise lies in designing, engineering, maintaining, installing, testing and commissioning high-voltage substations, electrical transmission and distribution…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Primary Power Consultingprimarypower.co.uk HQ: Cheadle, United KingdomReported employees: 11-50 | Cheadle, United Kingdom | 11-50 | Exact match | 19 contacts → |
“Primary Power Consulting is a UK‑based power engineering and project management consultancy specialising in the delivery of complex HV and EHV electricity infrastructure.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 359 company matches
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Substation testing companies: dataset insights
November 6, 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
353 records in the displayed employee bands.
6 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 359 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: November 6, 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 substation testing 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 substation testing companies did RevenueBase find based in the United Kingdom?
The saved snapshot records 359 matching company records, 3,230 tracked contacts and 1,043 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: November 6, 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 substation testing companies based in the United Kingdom. Snapshot: November 6, 2026. https://revenuebase.ai/companies/substation-testing-companies/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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