Company lists · Data refreshed November 2026

Top 25 Electrical system auditing services based in the United Kingdom

RevenueBase identified 1,161 company matches for electrical system auditing services associated with the United Kingdom as of November 2026 and tracks 5,387 professional contacts across them, including 1,193 with verified work emails. London is the largest hub.

This list covers company matches for electrical system auditing services 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
1,161Companies
5,387Contacts tracked
1,193Verified emails
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The 25 largest electrical system auditing services based in the United Kingdom

Ranked by team size
Top 25 of 1,161 company matches for electrical system auditing services based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchSheffield, United KingdomHQ recorded Nov 6, 202651-200147 contacts →

Exact match

“Founded in 2010, Guardian Electrical Compliance Ltd have become the market leaders in terms of Duty Holder guidance, technical & legislative support, site delivery and after sales…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchDunstable, United KingdomHQ recorded Nov 6, 2026201-500142 contacts →

Exact match

“NICEIC is the UK’s largest certification body for electrical businesses.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Nov 6, 2026201-500127 contacts →

Exact match

“We’ve been providing fire and electrical compliance services for over 30 years, supporting clients across London and the Southeast with our locally based engineers.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchHorsham, United KingdomHQ recorded Nov 6, 2026501-1,00095 contacts →

Exact match

“With over 35 Years expertise, Sureserve Compliance Fire is an Industry leading business excelling in delivering Fire and Electrical compliance and testing services to housing…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchMilton Keynes, United KingdomHQ recorded Nov 6, 202651-20062 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
6Exact matchYork, United KingdomHQ recorded Nov 6, 202651-20057 contacts →

Exact match

“Eurofins E&E UK provides a comprehensive range of testing, certification and compliance services for designers and manufacturers of electronic and electrical products.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchWeybridge, United KingdomHQ recorded Nov 6, 202651-20054 contacts →

Exact match

“Since 1998, Powercor have specialised in every aspect of electrical engineering.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchPreston, United KingdomHQ recorded Nov 6, 202651-20054 contacts →

Exact match

“We are the first choice trusted partner, supporting businesses in meeting their regulatory electrical testing requirements.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchBanstead, United KingdomHQ recorded Nov 6, 202651-20052 contacts →

Exact match

“Our aim is to be the first choice for electrical and engineering installations.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchInverness, United KingdomHQ recorded Nov 6, 202611-5051 contacts →

Exact match

“NES is an Industrial and Commercial Electrical Engineering and Contracting business, based in the North and North East of Scotland.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchRochester, United KingdomHQ recorded Nov 6, 202611-5050 contacts →

Exact match

“GCS Compliance Ltd are a specialist independent auditing company providing quality safety, expert technical, compliance management consultancy services and professional training…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchTranent, United KingdomHQ recorded Nov 6, 202651-20043 contacts →

Exact match

“Inspection Network Limited is part of the Normec Group and are specialists in the Statutory Examination of Cranes, Lifts, Lifting and Handling Equipment and Pressure Plant…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchCheltenham, United KingdomHQ recorded Nov 6, 202651-20040 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
14Exact matchSouthampton, United KingdomHQ recorded Nov 6, 202611-5038 contacts →

Exact match

“COMPANY OVERVIEW Based near Southampton, Intersafe are compliance specialists providing a range of electrical testing services for large, commercial sites.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchCookstown, United KingdomHQ recorded Nov 6, 202651-20036 contacts →

Exact match

“SA3 Power are a Specialized Electrical Installer that provides electrical services for the Data Centers Industry across Europe.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchHalifax, United KingdomHQ recorded Nov 6, 202611-5035 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
17Exact matchDunmow, United KingdomHQ recorded Nov 6, 202611-5034 contacts →

Exact match

“We are a leading provider of electrical compliance and support services in the built environment.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchPelsall, United KingdomHQ recorded Nov 6, 202611-5032 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
19Exact matchRawtenstall, United KingdomHQ recorded Nov 6, 202611-5026 contacts →

Exact match

“When inspecting engineering plant and equipment, you can’t leave anything to chance, but you can leave it to Thurra.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchRotherham, United KingdomHQ recorded Nov 6, 202611-5026 contacts →

Exact match

“iCD Energy is a premier provider in the energy sector, offering a wide array of services for Industrial, Commercial, and Domestic markets.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchIpswich, United KingdomHQ recorded Nov 6, 202611-5022 contacts →

Exact match

“Firstfield Electrical Ltd are specialists in large-scale industrial and commercial electrical installations, control systems, inspections and domestic works.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchWidnes, United KingdomHQ recorded Nov 6, 202611-5020 contacts →

Exact match

“SWS is the complete package when it comes to green technologies, offering a range of services for home & commercial renewable installations including Solar PV, Battery storage…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchPrescot, United KingdomHQ recorded Nov 6, 202611-5020 contacts →

Exact match

“Citrus is a leading provider of electrical services within the public sector across Northern and Central England.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchCannock, United KingdomHQ recorded Nov 6, 202651-20020 contacts →

Exact match

“Veriserv operate nationally helping businesses ensure their workplace is safe and meets electrical, fire, security and mechanical compliance standards.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchBolton, United KingdomHQ recorded Nov 6, 202651-20018 contacts →

Exact match

“RNM ELECTRICAL LIMITED is a construction company based out of 10 THE HILLOCK THE HILLOCK, BOLTON, United Kingdom.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 1,161 electrical system auditing services based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 1,193 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Electrical system auditing services based in the United Kingdom at a glance

As of Nov 6, 2026
22.1%Verified-email coverage
4.6Average contacts per company
1-10Median size (employees)
7.7%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
782
11-50
251
51-200
33
201-500
3
501-1,000
2
1,001-5,000
1

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 1,161 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 “electrical system auditing services” 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 1,193 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.

Electrical system auditing services by metro

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 “electrical system auditing services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many electrical system auditing services are there based in the United Kingdom?

RevenueBase identified 1,161 company matches for electrical system auditing services 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?

Guardian Electrical Compliance LTD tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most electrical system auditing services?

London leads with 89 company records, followed by Manchester (16) and Sheffield (14).

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 1,193 professional contacts with verified work emails tracked across these 1,161 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.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.