Company lists · Data refreshed September 2026

Top 24 Electrical equipment installation services based in London, United Kingdom

Name: Electrical equipment installation services 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 296 companies tracked

RevenueBase identified 296 electrical equipment installation services headquartered in London, United Kingdom as of September 2026 and tracks 1,007 professional contacts across them, including 198 with verified work emails. London is the largest hub.

This list covers electrical equipment installation services 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

296Companies

1,007Contacts tracked

198Verified emails

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The 24 largest electrical equipment installation services based in London, United Kingdom

Ranked by team size

Top 24 of 296 electrical equipment installation services 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 equipment installation services: 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	Grant Walker Engineering	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	81 contacts →
	Strong evidence “Grant Walker Engineering specialise in the complete installation of Electrical and Mechanical systems across all work sectors including quality office developments, commercial and…” Source: RevenueBase Database · checked Sep 19, 2026
2	Elmech LTD	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	42 contacts →
	Partial evidence “The core activities of our business are all aspects of mechanical and electrical services including air conditioning, sprinkler systems, CHW<HW, ventilation, BMS, door entry and…” Source: RevenueBase Database · checked Sep 19, 2026
3	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
4	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
5	Concepto Solutions LTD	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	12 contacts →
	Strong evidence “Concepto AV is an electrical-led technology company delivering high-quality electrical installations across residential and commercial projects in London.” Source: RevenueBase Database · checked Sep 19, 2026
6	SPL Construct LTD	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	12 contacts →
	Partial evidence “As fully qualified, time served electrical contractors, we have a wealth of knowledge in the electrical industry, predominantly carrying out a wide range of services from design…” Source: RevenueBase Database · checked Sep 19, 2026
7	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
8	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
9	Intrelec LTD	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	9 contacts →
	Strong 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
10	JSJ Smart Homes	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	9 contacts →
	Strong evidence “JSJ Smart Homes was formed as a specialised contractor in the field of domestic installations, covering all aspects of electrical installs, such as home automation and data…” Source: RevenueBase Database · checked Sep 19, 2026
11	NES Security Limited	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	7 contacts →
	Partial evidence “An independent electrical services company providing bespoke and high-quality CCTV, Security, Access control and Automation technology systems to private and corporate clients in…” Source: RevenueBase Database · checked Sep 19, 2026
12	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
13	Newmay Electrical Services LTD	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	7 contacts →
	Strong 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
14	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
15	Total Electric Solutions LTD	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	6 contacts →
	Strong evidence “Established in 2006, Total Electric Solutions Ltd provides a complete electrical package from the design & tendering process through to the final installation & after care.” Source: RevenueBase Database · checked Sep 19, 2026
16	Astoria Fire And Security	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	5 contacts →
	Strong 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
17	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
18	Amber Electrical Services LTD	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	5 contacts →
	Indirect evidence “As a successful, progressive company, we continually strive to identify project risks, manage agreed performance levels and optimise cost/revenue budgets for all our clients.” Source: RevenueBase Database · checked Sep 19, 2026
19	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
20	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
21	Code Electrical LTD	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	4 contacts →
	Partial evidence “At Code Electrical, our friendly and reliable domestic and commercial electricians are perfectly suited to carry out any type of electrical work for your business.” Source: RevenueBase Database · checked Sep 19, 2026
22	Eightcube Solutions	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	4 contacts →
	Partial evidence “EIGHTCUBE, based in London, is a fast-growing and ambitious electrical design and build business delivering high quality projects for both domestic and commercial properties and…” Source: RevenueBase Database · checked Sep 19, 2026
23	Bextec Electrical Services LTD	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	4 contacts →
	Partial evidence “Bextec Electrical are a London based company operating in the commercial and residential sectors of the electrical industry.” Source: RevenueBase Database · checked Sep 19, 2026
24	MPE Electrical Contractors LTD	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	3 contacts →
	Strong 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

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 equipment installation services. 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 equipment installation services.
Partial evidence: Its own public description names part of electrical equipment installation services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name electrical equipment installation services. 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 24 of 296 electrical equipment installation services based in London, United Kingdom

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Electrical equipment installation services based in London, United Kingdom at a glance

As of Sep 19, 2026

19.7%Verified-email coverage

3.4Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

208

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 296 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 equipment installation services, 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 equipment installation services”. 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 equipment installation services), 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 equipment installation services, 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, 198 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 equipment installation services by metro in the United Kingdom

Electrical equipment installation services in London296
Electrical equipment installation services in Manchester63
Electrical equipment installation services in Bristol53
Electrical equipment installation services in Nottingham53
Electrical equipment installation services in Leeds46
Electrical equipment installation services in Birmingham44
Electrical equipment installation services in Glasgow43
Electrical equipment installation services in Leicester43
Electrical equipment installation services in Sheffield39
Electrical equipment installation services in Southampton35
Electrical equipment installation services in Liverpool33
Electrical equipment installation services in Hull32
Electrical equipment installation services in Northampton30
Electrical equipment installation services in Bournemouth26
Electrical equipment installation services in Portsmouth26

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 equipment installation services, 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 equipment installation services are there based in London, United Kingdom?

RevenueBase identified 296 electrical equipment installation services 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?

Grant Walker Engineering, headquartered in London, tops this list with the largest team on record.

Which city has the most electrical equipment installation services?

London leads with 296 headquartered companies, followed by Manchester (63) and Bristol (53).

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 198 verified decision-maker contacts tracked across these 296 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.