Company lists · Data refreshed November 2026
Top 25 Insulator testing companies based in the United Kingdom
RevenueBase identified 99 company matches for insulator testing companies associated with the United Kingdom as of November 2026 and tracks 689 professional contacts across them, including 198 with verified work emails. London is the largest hub.
This list covers company matches for insulator 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 insulator testing companies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 62 contacts → | ||||
Exact match “BASEC Group Limited, a part of Kiwa, is a global leader in product testing and certification services for power, energy, data/signal cables and ancillary products, in addition to…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 53 contacts → | ||||
Exact match “We protect people, assets and the environment in high-risk industries through precise, responsive and reporting-led inspection services that give our clients total confidence in…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 50 contacts → | ||||
Exact match “Monitra (formerly HVPD) are experts in the field of Partial Discharge (PD) testing and monitoring of Medium Voltage and High Voltage electrical equipment, which can be performed…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 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 | |||||
| 5 | 38 contacts → | ||||
Exact match “With over 95 years of experience, Martindale Electric is one of the most trusted brands in electrical safety testing.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 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 | |||||
| 7 | 26 contacts → | ||||
Exact match “INSPECTION AND CONSULTANCY SERVICES LIMITED is an inspection and consulting company based out of Westerham, United Kingdom.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 23 contacts → | ||||
Exact match “Safety Inspections Group Ltd specialise in electrical safety for both residential and commercial premises, and was created by the founders of a multi-award winning electrical…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 18 contacts → | ||||
Exact match “At Novus Compliance Services Ltd we specialise in Electrical Testing and Inspection, Maintenance, Installation design, Energy Management and refurbishment for a wide range of…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 12 contacts → | ||||
Exact match “Formed in 2012, Independent Company Safety Services (ICSS) Ltd specialise in Electrical Safety Compliance, and provides Portable Appliance Testing (PAT), Fixed Wire Testing…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 9 contacts → | ||||
Exact match “The Electrical Compliance Collective Ltd (TECC Ltd) is an award-winning electrical contractor based in Swindon, Wiltshire, supporting domestic, commercial and industrial customers…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 8 contacts → | ||||
Exact match “Presspahn Ltd is a privately owned independent company founded in 1925, primarily dealing in Electrical Insulation, Thermal Insulation and Mica Insulation parts, products and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 7 contacts → | ||||
Exact match “Aylesford Electrical is a specialist testing, maintenance and installation provider based in Kent.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 7 contacts → | ||||
Exact match “Specialist Technical Services (U.K) Limited (T/A: STS-UK), offers an extensive range of In-House and On-Site Testing, Inspection, Structural Monitoring and Environmental…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 5 contacts → | ||||
Exact match “Welcome to Power Sonic Ltd If you require help and assistance with your electrical safety then you have come to the right place!” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 4 contacts → | ||||
Exact match “At GRW we inspect and test electrical installations in commercial, industrial, public and residential rental premises, ensuring their compliance with BS 7671, and with statutory…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 4 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 4 contacts → | ||||
Exact match “Since 1998 Inspexx Ltd has been a trusted partner in electrical inspections.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 3 contacts → | ||||
Exact match “The company has a proud heritage of traditional skills and values fused with professional management.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 3 contacts → | ||||
Exact match “With years of experience in the inspection and testing industry, you can have confidence in our engineering inspections.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 3 contacts → | ||||
Exact match “Langtec have been manufacturers and suppliers of a wide range of electrical and thermal insulating materials in sheet, processed to drawing and in tubular form for over fifty…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 3 contacts → | ||||
Exact match “Orange Tree Electrical are specialist providers of electrical inspection & testing services including fixed wiring testing, portable appliance testing, thermographic surveys and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 3 contacts → | ||||
Exact match “At Red Current Ltd, we are passionate about Thermography and are dedicated to delivering industry leading thermographic inspection services, thermal imaging camera hire and camera…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 2 contacts → | ||||
Exact match “Industrial Safety Inspections is a leading independent engineering inspection organisation, helping commercial and industrial customers protect their staff, plant, assets, and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 2 contacts → | ||||
Exact match “Electrical testing and compliance solutions.” 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 “insulator 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 99 insulator testing companies based in the United Kingdom
See the full list, filter by size, metro and specialty, and access 198 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Insulator 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 99 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 “insulator 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 198 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 “insulator testing companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many insulator testing companies are there based in the United Kingdom?
RevenueBase identified 99 company matches for insulator 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?
Basec Group Limited Basec tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most insulator testing companies?
London leads with 8 company records, followed by Manchester (4) and Maidstone (3).
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 198 professional contacts with verified work emails tracked across these 99 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 99 insulator testing companies based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Insulator testing companies by geography
- Insulator testing companies based in Brazil
- Insulator testing companies based in France
- Insulator testing companies based in Germany
- Insulator testing companies based in India
- Insulator testing companies based in Italy
- Insulator testing companies based in the Netherlands
- Insulator testing companies based in Switzerland
- Insulator testing companies based in the United States
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
- Insulator testing companies based in Brazil
- Insulator testing companies based in France
- Insulator testing companies based in Germany
- Insulator testing companies based in India
- Insulator testing companies based in Italy
- Insulator testing companies based in the Netherlands
Company intelligence · public preview
Top 25 insulator 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 99 matching company records for insulator testing companies based in the United Kingdom, with 689 tracked contacts and 198 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 insulator 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 |  Basec Group Limited Basecbasec.org.ukHQ: Milton Keynes, United KingdomReported employees: 51-200 | Milton Keynes, United Kingdom | 51-200 | Exact match | 62 contacts → |
“BASEC Group Limited, a part of Kiwa, is a global leader in product testing and certification services for power, energy, data/signal cables and ancillary products, in addition to…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  NDT Groupndtgroup.co.ukHQ: Deeside, United KingdomReported employees: 11-50 | Deeside, United Kingdom | 11-50 | Exact match | 53 contacts → |
“We protect people, assets and the environment in high-risk industries through precise, responsive and reporting-led inspection services that give our clients total confidence in…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Monitramonitra.co.ukHQ: Manchester, United KingdomReported employees: 51-200 | Manchester, United Kingdom | 51-200 | Exact match | 50 contacts → |
“Monitra (formerly HVPD) are experts in the field of Partial Discharge (PD) testing and monitoring of Medium Voltage and High Voltage electrical equipment, which can be performed…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  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. | |||||
| 5 |  Martindale Electric Co. LTDmartindale-electric.co.ukHQ: Watford, United KingdomReported employees: 11-50 | Watford, United Kingdom | 11-50 | Exact match | 38 contacts → |
“With over 95 years of experience, Martindale Electric is one of the most trusted brands in electrical safety testing.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  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. | |||||
| 7 |  Inspection And Consultancy Services Limitediacsltd.co.ukHQ: Westerham, United KingdomReported employees: 51-200 | Westerham, United Kingdom | 51-200 | Exact match | 26 contacts → |
“INSPECTION AND CONSULTANCY SERVICES LIMITED is an inspection and consulting company based out of Westerham, United Kingdom.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Safety Inspections Group LTDsafetyig.comHQ: Leeds, United KingdomReported employees: 11-50 | Leeds, United Kingdom | 11-50 | Exact match | 23 contacts → |
“Safety Inspections Group Ltd specialise in electrical safety for both residential and commercial premises, and was created by the founders of a multi-award winning electrical…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Novus Compliance Services Limitednovuscompliance.co.ukHQ: Bishop Stortford, United KingdomReported employees: 51-200 | Bishop Stortford, United Kingdom | 51-200 | Exact match | 18 contacts → |
“At Novus Compliance Services Ltd we specialise in Electrical Testing and Inspection, Maintenance, Installation design, Energy Management and refurbishment for a wide range of…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Icss LTDicssltd.co.ukHQ: Larne, United KingdomReported employees: 11-50 | Larne, United Kingdom | 11-50 | Exact match | 12 contacts → |
“Formed in 2012, Independent Company Safety Services (ICSS) Ltd specialise in Electrical Safety Compliance, and provides Portable Appliance Testing (PAT), Fixed Wire Testing…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | HQ: Swindon, United KingdomReported employees: 11-50 | Swindon, United Kingdom | 11-50 | Exact match | 9 contacts → |
“The Electrical Compliance Collective Ltd (TECC Ltd) is an award-winning electrical contractor based in Swindon, Wiltshire, supporting domestic, commercial and industrial customers…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Presspahn Limitedpresspahn.comHQ: Bradford, United KingdomReported employees: 11-50 | Bradford, United Kingdom | 11-50 | Exact match | 8 contacts → |
“Presspahn Ltd is a privately owned independent company founded in 1925, primarily dealing in Electrical Insulation, Thermal Insulation and Mica Insulation parts, products and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Aylesford Electrical Contractors LTDaylesfordelectrical.co.uk HQ: Maidstone, United KingdomReported employees: 11-50 | Maidstone, United Kingdom | 11-50 | Exact match | 7 contacts → |
“Aylesford Electrical is a specialist testing, maintenance and installation provider based in Kent.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Specialist Technical Services U.K Limited - Sts-Uksts-group.co.ukHQ: Chester, United KingdomReported employees: 11-50 | Chester, United Kingdom | 11-50 | Exact match | 7 contacts → |
“Specialist Technical Services (U.K) Limited (T/A: STS-UK), offers an extensive range of In-House and On-Site Testing, Inspection, Structural Monitoring and Environmental…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Power Sonic LTDpowersonic.coHQ: Driffield, United KingdomReported employees: 1-10 | Driffield, United Kingdom | 1-10 | Exact match | 5 contacts → |
“Welcome to Power Sonic Ltd If you require help and assistance with your electrical safety then you have come to the right place!” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  GRW Group LTDgrwelectrical.co.ukHQ: Wakefield, United KingdomReported employees: 11-50 | Wakefield, United Kingdom | 11-50 | Exact match | 4 contacts → |
“At GRW we inspect and test electrical installations in commercial, industrial, public and residential rental premises, ensuring their compliance with BS 7671, and with statutory…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Tidal Power Services LTDtidalpowerservices.comHQ: Bournemouth, United KingdomReported employees: 11-50 | Bournemouth, United Kingdom | 11-50 | Exact match | 4 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 18 |  Inspexx LTDinspexx.co.ukHQ: Bradford, United KingdomReported employees: 1-10 | Bradford, United Kingdom | 1-10 | Exact match | 4 contacts → |
“Since 1998 Inspexx Ltd has been a trusted partner in electrical inspections.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Ampionampiontesting.comHQ: Newcastle, United KingdomReported employees: 11-50 | Newcastle, United Kingdom | 11-50 | Exact match | 3 contacts → |
“The company has a proud heritage of traditional skills and values fused with professional management.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  GSB Inspections LTDgsbinspections.co.ukHQ: Stoke-on-trent, United KingdomReported employees: 1-10 | Stoke-on-trent, United Kingdom | 1-10 | Exact match | 3 contacts → |
“With years of experience in the inspection and testing industry, you can have confidence in our engineering inspections.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Langtec LTDlangtec.co.ukHQ: Accrington, United KingdomReported employees: 51-200 | Accrington, United Kingdom | 51-200 | Exact match | 3 contacts → |
“Langtec have been manufacturers and suppliers of a wide range of electrical and thermal insulating materials in sheet, processed to drawing and in tubular form for over fifty…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Orange Tree Electrical Services LTDorangetreeelectrical.co.ukHQ: Hemsworth, United KingdomReported employees: 1-10 | Hemsworth, United Kingdom | 1-10 | Exact match | 3 contacts → |
“Orange Tree Electrical are specialist providers of electrical inspection & testing services including fixed wiring testing, portable appliance testing, thermographic surveys and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  RED Current LTDred-current.comHQ: Aldermaston, United KingdomReported employees: 1-10 | Aldermaston, United Kingdom | 1-10 | Exact match | 3 contacts → |
“At Red Current Ltd, we are passionate about Thermography and are dedicated to delivering industry leading thermographic inspection services, thermal imaging camera hire and camera…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Industrial Safety Inspections Limitedisisafety.com HQ: Tamworth, United KingdomReported employees: 51-200 | Tamworth, United Kingdom | 51-200 | Exact match | 2 contacts → |
“Industrial Safety Inspections is a leading independent engineering inspection organisation, helping commercial and industrial customers protect their staff, plant, assets, and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  E-Tcse-tcs.co.ukHQ: Peterborough, United KingdomReported employees: 11-50 | Peterborough, United Kingdom | 11-50 | Exact match | 2 contacts → |
“Electrical testing and compliance solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 99 company matches
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Insulator 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
96 records in the displayed employee bands.
3 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 99 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 insulator 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 insulator testing companies did RevenueBase find based in the United Kingdom?
The saved snapshot records 99 matching company records, 689 tracked contacts and 198 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
Insulator testing companies by geography
- Insulator testing companies based in Brazil
- Insulator testing companies based in France
- Insulator testing companies based in Germany
- Insulator testing companies based in India
- Insulator testing companies based in Italy
- Insulator testing companies based in the Netherlands
- Insulator testing companies based in Switzerland
- Insulator testing companies based in the United States
Cite this list
RevenueBase Data Team. Top 25 insulator testing companies based in the United Kingdom. Snapshot: November 6, 2026. https://revenuebase.ai/companies/insulator-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
- Insulator testing companies based in Brazil
- Insulator testing companies based in France
- Insulator testing companies based in Germany
- Insulator testing companies based in India
- Insulator testing companies based in Italy
- Insulator testing companies based in the Netherlands
Company intelligence · public preview
Top 25 insulator testing companies based in the United Kingdom
RevenueBase records 99 matching company records for insulator testing companies based in the United Kingdom, with 689 tracked contacts and 198 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 insulator 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 | Basec Group Limited Basecbasec.org.uk HQ: Milton Keynes, United KingdomReported employees: 51-200 | Milton Keynes, United Kingdom | 51-200 | Exact match | 62 contacts → |
“BASEC Group Limited, a part of Kiwa, is a global leader in product testing and certification services for power, energy, data/signal cables and ancillary products, in addition to…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | NDT Groupndtgroup.co.uk HQ: Deeside, United KingdomReported employees: 11-50 | Deeside, United Kingdom | 11-50 | Exact match | 53 contacts → |
“We protect people, assets and the environment in high-risk industries through precise, responsive and reporting-led inspection services that give our clients total confidence in…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Monitramonitra.co.uk HQ: Manchester, United KingdomReported employees: 51-200 | Manchester, United Kingdom | 51-200 | Exact match | 50 contacts → |
“Monitra (formerly HVPD) are experts in the field of Partial Discharge (PD) testing and monitoring of Medium Voltage and High Voltage electrical equipment, which can be performed…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | 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. | |||||
| 5 | Martindale Electric Co. LTDmartindale-electric.co.uk HQ: Watford, United KingdomReported employees: 11-50 | Watford, United Kingdom | 11-50 | Exact match | 38 contacts → |
“With over 95 years of experience, Martindale Electric is one of the most trusted brands in electrical safety testing.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | 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. | |||||
| 7 | Inspection And Consultancy Services Limitediacsltd.co.uk HQ: Westerham, United KingdomReported employees: 51-200 | Westerham, United Kingdom | 51-200 | Exact match | 26 contacts → |
“INSPECTION AND CONSULTANCY SERVICES LIMITED is an inspection and consulting company based out of Westerham, United Kingdom.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Safety Inspections Group LTDsafetyig.com HQ: Leeds, United KingdomReported employees: 11-50 | Leeds, United Kingdom | 11-50 | Exact match | 23 contacts → |
“Safety Inspections Group Ltd specialise in electrical safety for both residential and commercial premises, and was created by the founders of a multi-award winning electrical…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Novus Compliance Services Limitednovuscompliance.co.uk HQ: Bishop Stortford, United KingdomReported employees: 51-200 | Bishop Stortford, United Kingdom | 51-200 | Exact match | 18 contacts → |
“At Novus Compliance Services Ltd we specialise in Electrical Testing and Inspection, Maintenance, Installation design, Energy Management and refurbishment for a wide range of…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Icss LTDicssltd.co.uk HQ: Larne, United KingdomReported employees: 11-50 | Larne, United Kingdom | 11-50 | Exact match | 12 contacts → |
“Formed in 2012, Independent Company Safety Services (ICSS) Ltd specialise in Electrical Safety Compliance, and provides Portable Appliance Testing (PAT), Fixed Wire Testing…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | HQ: Swindon, United KingdomReported employees: 11-50 | Swindon, United Kingdom | 11-50 | Exact match | 9 contacts → |
“The Electrical Compliance Collective Ltd (TECC Ltd) is an award-winning electrical contractor based in Swindon, Wiltshire, supporting domestic, commercial and industrial customers…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Presspahn Limitedpresspahn.com HQ: Bradford, United KingdomReported employees: 11-50 | Bradford, United Kingdom | 11-50 | Exact match | 8 contacts → |
“Presspahn Ltd is a privately owned independent company founded in 1925, primarily dealing in Electrical Insulation, Thermal Insulation and Mica Insulation parts, products and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Aylesford Electrical Contractors LTDaylesfordelectrical.co.uk HQ: Maidstone, United KingdomReported employees: 11-50 | Maidstone, United Kingdom | 11-50 | Exact match | 7 contacts → |
“Aylesford Electrical is a specialist testing, maintenance and installation provider based in Kent.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Specialist Technical Services U.K Limited - Sts-Uksts-group.co.uk HQ: Chester, United KingdomReported employees: 11-50 | Chester, United Kingdom | 11-50 | Exact match | 7 contacts → |
“Specialist Technical Services (U.K) Limited (T/A: STS-UK), offers an extensive range of In-House and On-Site Testing, Inspection, Structural Monitoring and Environmental…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Power Sonic LTDpowersonic.co HQ: Driffield, United KingdomReported employees: 1-10 | Driffield, United Kingdom | 1-10 | Exact match | 5 contacts → |
“Welcome to Power Sonic Ltd If you require help and assistance with your electrical safety then you have come to the right place!” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | GRW Group LTDgrwelectrical.co.uk HQ: Wakefield, United KingdomReported employees: 11-50 | Wakefield, United Kingdom | 11-50 | Exact match | 4 contacts → |
“At GRW we inspect and test electrical installations in commercial, industrial, public and residential rental premises, ensuring their compliance with BS 7671, and with statutory…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Tidal Power Services LTDtidalpowerservices.com HQ: Bournemouth, United KingdomReported employees: 11-50 | Bournemouth, United Kingdom | 11-50 | Exact match | 4 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 18 | Inspexx LTDinspexx.co.uk HQ: Bradford, United KingdomReported employees: 1-10 | Bradford, United Kingdom | 1-10 | Exact match | 4 contacts → |
“Since 1998 Inspexx Ltd has been a trusted partner in electrical inspections.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Ampionampiontesting.com HQ: Newcastle, United KingdomReported employees: 11-50 | Newcastle, United Kingdom | 11-50 | Exact match | 3 contacts → |
“The company has a proud heritage of traditional skills and values fused with professional management.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | GSB Inspections LTDgsbinspections.co.uk HQ: Stoke-on-trent, United KingdomReported employees: 1-10 | Stoke-on-trent, United Kingdom | 1-10 | Exact match | 3 contacts → |
“With years of experience in the inspection and testing industry, you can have confidence in our engineering inspections.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Langtec LTDlangtec.co.uk HQ: Accrington, United KingdomReported employees: 51-200 | Accrington, United Kingdom | 51-200 | Exact match | 3 contacts → |
“Langtec have been manufacturers and suppliers of a wide range of electrical and thermal insulating materials in sheet, processed to drawing and in tubular form for over fifty…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Orange Tree Electrical Services LTDorangetreeelectrical.co.uk HQ: Hemsworth, United KingdomReported employees: 1-10 | Hemsworth, United Kingdom | 1-10 | Exact match | 3 contacts → |
“Orange Tree Electrical are specialist providers of electrical inspection & testing services including fixed wiring testing, portable appliance testing, thermographic surveys and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | RED Current LTDred-current.com HQ: Aldermaston, United KingdomReported employees: 1-10 | Aldermaston, United Kingdom | 1-10 | Exact match | 3 contacts → |
“At Red Current Ltd, we are passionate about Thermography and are dedicated to delivering industry leading thermographic inspection services, thermal imaging camera hire and camera…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Industrial Safety Inspections Limitedisisafety.com HQ: Tamworth, United KingdomReported employees: 51-200 | Tamworth, United Kingdom | 51-200 | Exact match | 2 contacts → |
“Industrial Safety Inspections is a leading independent engineering inspection organisation, helping commercial and industrial customers protect their staff, plant, assets, and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | E-Tcse-tcs.co.uk HQ: Peterborough, United KingdomReported employees: 11-50 | Peterborough, United Kingdom | 11-50 | Exact match | 2 contacts → |
“Electrical testing and compliance solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 99 company matches
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Insulator 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
96 records in the displayed employee bands.
3 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 99 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 insulator 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 insulator testing companies did RevenueBase find based in the United Kingdom?
The saved snapshot records 99 matching company records, 689 tracked contacts and 198 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 insulator testing companies based in the United Kingdom. Snapshot: November 6, 2026. https://revenuebase.ai/companies/insulator-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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- Insulator testing companies based in Brazil
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- Insulator testing companies based in Germany
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- Insulator testing companies based in the Netherlands