Company lists · Data refreshed September 2026

Top 25 Electrical testing and inspection companies based in London, United Kingdom

Name: Electrical testing and inspection companies based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 192 companies tracked

RevenueBase identified 192 electrical testing and inspection companies headquartered in London, United Kingdom as of September 2026 and tracks 608 professional contacts across them, including 131 with verified work emails. London is the largest hub.

This list covers electrical testing and inspection companies headquartered in London, United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

192Companies

608Contacts tracked

131Verified emails

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The 25 largest electrical testing and inspection companies based in London, United Kingdom

Ranked by team size

Top 25 of 192 electrical testing and inspection companies based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to electrical testing and inspection companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	RGE Services	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	201-500	94 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 19, 2026
2	ARC Electrical	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	30 contacts →
	Partial evidence “Electrical Contractors and Wholesalers based in Central London and Essex.” Source: RevenueBase Database · checked Sep 19, 2026
3	Niblock Electrical Services	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	22 contacts →
	Partial evidence “Niblock Electrical Services are a M&E contractor based in South East London.” Source: RevenueBase Database · checked Sep 19, 2026
4	London Electrical Solutions LTD	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	11 contacts →
	Partial evidence “London Electrical Solutions: Experienced Electricians operating across London Residential & Commercial Electricians serving Greater London London Electrical Solutions is a…” Source: RevenueBase Database · checked Sep 19, 2026
5	TNS Electrical Contractors LTD	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	11 contacts →
	Partial evidence “We are TNS Electrical Contractors Ltd and based in East London with over 15 years of experience in the electrical industry.” Source: RevenueBase Database · checked Sep 19, 2026
6	Intrelec LTD	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	9 contacts →
	Partial evidence “Intrelec are NICEIC Approved Mechanical & Electrical Contractors in London providing M&E design, installation and maintenance services to commercial, industrial and residential…” Source: RevenueBase Database · checked Sep 19, 2026
7	Propertyrun Electrical Contractors	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	7 contacts →
	Partial evidence “PropertyRun Contracts Ltd are approved electrical contractors, that provide a full range of services all over London.” Source: RevenueBase Database · checked Sep 19, 2026
8	Newmay Electrical Services LTD	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	7 contacts →
	Partial evidence “We are pleased to offer our expertise across a comprehensive range of electrical services, including full domestic and commercial installation, full and part rewires, home…” Source: RevenueBase Database · checked Sep 19, 2026
9	R P Bray Electrical Contractors	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	6 contacts →
	Strong evidence “R P Bray carry out electrical installation works to domestic, commercial and industrial projects, complete with design and testing facilities, specializing in the hotel, leisure…” Source: RevenueBase Database · checked Sep 19, 2026
10	Astoria Fire And Security	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	5 contacts →
	Partial evidence “Astoria Fire and Security carry out installations and provide maintenance services in the Electrical, Fire Alarm and CCTV industry to commercial, industrial and domestic…” Source: RevenueBase Database · checked Sep 19, 2026
11	Vezo Energy	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	5 contacts →
	Partial evidence “Vezo Energy delivers professional electrical, construction and facilities services for offices, leisure facilities, hospitals, property managers, commercial properties and luxury…” Source: RevenueBase Database · checked Sep 19, 2026
12	SES Electrical Contractors UK LTD	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	5 contacts →
	Partial evidence “Fire Safety & Electrical Compliance for London Buildings SES designs, installs, tests and maintains fire alarm, emergency lighting and life-safety systems, alongside electrical…” Source: RevenueBase Database · checked Sep 19, 2026
13	LUX Electrical Solutions LTD	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	5 contacts →
	Partial evidence “Lux Electrical Solutions is a London based electrical partner specialising in compliance, remedials and premium fit outs for property management firms and high end retail brands.” Source: RevenueBase Database · checked Sep 19, 2026
14	Capital NDT Limited	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	4 contacts →
	Partial evidence “Capital NDT is a UK based, independently owned organisation that specialises in non-destructive testing.” Source: RevenueBase Database · checked Sep 19, 2026
15	MPE Electrical Contractors LTD	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	3 contacts →
	Partial evidence “MPE Electrical Contractors are a London /Kent based company specialising in all aspects of electrical installation within the residential, commercial and industrial sectors.” Source: RevenueBase Database · checked Sep 19, 2026
16	Lockesleys	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	2 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
17	Morelands Electrical LTD	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	2 contacts →
	Partial evidence “Morelands is an accredited electrical company with an extensive range of clients across the Public and Private Sector.” Source: RevenueBase Database · checked Sep 19, 2026
18	Quantum Electricians & Plumbers	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	2 contacts →
	Partial evidence “Quantum Electrical Services offers fast track, no nonsense electrical solutions to Londoners since 2015.” Source: RevenueBase Database · checked Sep 19, 2026
19	AC Kinetic LTD	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	2 contacts →
	Partial evidence “AC Kinetic offers a quick and trustworthy electrical repair and installation call-out service.” Source: RevenueBase Database · checked Sep 19, 2026
20	CG Site Electrical LTD	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	2 contacts →
	Partial evidence “CG Site Electrical is a Temporary Site Services Construction Company that delivers excellence and professionalism.” Source: RevenueBase Database · checked Sep 19, 2026
21	Integrated Electrical Services IRE LTD	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	2 contacts →
	Partial evidence “IES is an Electrical Services company based in Central London.” Source: RevenueBase Database · checked Sep 19, 2026
22	BRS Electrical London LTD	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	1 contacts →
	Partial evidence “London Based electrical contractor” Source: RevenueBase Database · checked Sep 19, 2026
23	NOD Electrical Services	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	1 contacts →
	Indirect evidence “We are a family firm and members of NAPIT, Trustmark and the Competent Persons Registry.” Source: RevenueBase Database · checked Sep 19, 2026
24	Distribution Services Group LTD - DSG	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	1 contacts →
	Partial evidence “DSG are a UK and overseas specialist in HV, LV and EHV cable jointing and testing.” Source: RevenueBase Database · checked Sep 19, 2026
25	Zeno Electrics	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	1 contacts →
	Partial evidence “Providing residential and commercial electrical work of all sizes in and around London.” Source: RevenueBase Database · checked Sep 19, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: electrical testing and inspection companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names electrical testing and inspection companies.
Partial evidence: Its own public description names part of electrical testing and inspection companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name electrical testing and inspection companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 192 electrical testing and inspection companies based in London, United Kingdom

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Electrical testing and inspection companies based in London, United Kingdom at a glance

As of Sep 19, 2026

21.5%Verified-email coverage

3.2Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

137

11-50

51-200

201-500

Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 192 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among electrical testing and inspection companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in London, United Kingdom whose own description of what they do matches “electrical testing and inspection companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names electrical testing and inspection companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among electrical testing and inspection companies, and records with no verified work email. Companies headquartered outside London are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 131 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 19, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Electrical testing and inspection companies by metro in the United Kingdom

Electrical testing and inspection companies in London192
Electrical testing and inspection companies in Manchester41
Electrical testing and inspection companies in Bristol30
Electrical testing and inspection companies in Sheffield30
Electrical testing and inspection companies in Leicester29
Electrical testing and inspection companies in Nottingham26
Electrical testing and inspection companies in Southampton25

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names electrical testing and inspection companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many electrical testing and inspection companies are there based in London, United Kingdom?

RevenueBase identified 192 electrical testing and inspection companies headquartered in London, United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

RGE Services, headquartered in London, tops this list with the largest team on record.

Which city has the most electrical testing and inspection companies?

London leads with 192 headquartered companies, followed by Manchester (41) and Bristol (30).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 131 verified decision-maker contacts tracked across these 192 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 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 Smart Search, 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.