Company lists · Data refreshed September 2026

Top 25 Electrical contracting firms based in the United Kingdom

Name: Electrical contracting firms based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 5,591 companies tracked

RevenueBase identified 5,591 electrical contracting firms headquartered in the United Kingdom as of September 2026 and tracks 27,819 professional contacts across them, including 6,818 with verified work emails. London is the largest hub.

This list covers electrical contracting firms headquartered in the 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

5,591Companies

27,819Contacts tracked

6,818Verified emails

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The 25 largest electrical contracting firms based in the United Kingdom

Ranked by team size

Top 25 of 5,591 electrical contracting firms based in the 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 contracting firms: 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	J Brand LTD	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	n/a	1,245 contacts →
	Strong evidence “Originally set up in 1933 by Joseph Brand as an electrical contracting and repair business in Margaret Street W1, the company today still operates today with the same guiding…” Source: RevenueBase Database · checked Sep 19, 2026
2	MJ Quinn	Indirect evidence	Prescot, United KingdomHQ checked Sep 19, 2026	1,001-5,000	1,126 contacts →
	Indirect evidence “At MJ Quinn we believe in creating great connections, with our customers, our people and our world.” Source: RevenueBase Database · checked Sep 19, 2026
3	Clarkson Evans LTD	Partial evidence	Gloucester, United KingdomHQ checked Sep 19, 2026	501-1,000	331 contacts →
	Partial evidence “With over 850 staff, we are one of the UK’s leading electrical contractors and solar PV installers.” Source: RevenueBase Database · checked Sep 19, 2026
4	JKM	Partial evidence	Bedlington, United KingdomHQ checked Sep 19, 2026	201-500	183 contacts →
	Partial evidence “JKM Electricals is a well-established company which has built up a first-class reputation, Through successfully delivering high-quality workmanship.” Source: RevenueBase Database · checked Sep 19, 2026
5	Denmans Electrical	Partial evidence	Bristol, United KingdomHQ checked Sep 19, 2026	501-1,000	164 contacts →
	Partial evidence “Denmans has over 50 branches nationwide and is part of the largest Electrical Distributor in the world, the Rexel Group.” Source: RevenueBase Database · checked Sep 19, 2026
6	MCS	Indirect evidence	Bristol, United KingdomHQ checked Sep 19, 2026	51-200	138 contacts →
	Indirect evidence “MCS Ltd are specialist building services engineers covering all aspects of commercial and industrial building services and infrastructure engineering across varying market sectors.” Source: RevenueBase Database · checked Sep 19, 2026
7	Darke & Taylor LTD	Indirect evidence	Oxfordshire, United KingdomHQ checked Sep 19, 2026	51-200	112 contacts →
	Indirect evidence “Our mission is to excel in the design, installation and maintenance of the electro-technical systems that connect to create fit for purpose building environments.” Source: RevenueBase Database · checked Sep 19, 2026
8	G & A Barnie Group LTD	Indirect evidence	Inverness, United KingdomHQ checked Sep 19, 2026	201-500	109 contacts →
	Indirect evidence “Premier quality workmanship and personal attention are characteristics of G&A Barnie.” Source: RevenueBase Database · checked Sep 19, 2026
9	Rock Power Connections LTD	Partial evidence	Bromsgrove, United KingdomHQ checked Sep 19, 2026	51-200	105 contacts →
	Partial evidence “Rock Power Connections are experts in electrical connections with a proven track record of quality and safety.” Source: RevenueBase Database · checked Sep 19, 2026
10	MSE LTD	Indirect evidence	Redditch, United KingdomHQ checked Sep 19, 2026	11-50	101 contacts →
	Indirect evidence “MSE are a midlands based building services company and have over 30 years experience in the commercial and industrial environment working with a broad range of clients.” Source: RevenueBase Database · checked Sep 19, 2026
11	Electricbase	Partial evidence	Oxford, United KingdomHQ checked Sep 19, 2026	51-200	89 contacts →
	Partial evidence “Electricbase has become a leading power in electrical wholesaling.” Source: RevenueBase Database · checked Sep 19, 2026
12	Gloster MEP LTD	Partial evidence	Southwark, United KingdomHQ checked Sep 19, 2026	51-200	85 contacts →
	Partial evidence “Gloster MEP Ltd are a dynamic driven Mechanical and Electrical Contractor, well known within the industry for successfully delivering building services solutions to the Central…” Source: RevenueBase Database · checked Sep 19, 2026
13	Grant Walker Engineering	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	81 contacts →
	Partial 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
14	Mcintyre Compliance Services	Partial evidence	Peterborough, United KingdomHQ checked Sep 19, 2026	201-500	79 contacts →
	Partial evidence “McIntyre Compliance Services is a NICEIC, SSAIB, BAFE, BMTRADA approved contractor, carrying out all aspects of electrical works, fire, security and passive fire compliance works…” Source: RevenueBase Database · checked Sep 19, 2026
15	AKD	Indirect evidence	Edinburgh, United KingdomHQ checked Sep 19, 2026	51-200	79 contacts →
	Indirect evidence “AKD’s clients get quick results, normally leading to reduced costs and gaining an improved service.” Source: RevenueBase Database · checked Sep 19, 2026
16	Hutcheon Services LTD	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 19, 2026	51-200	72 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
17	Allsaved LTD	Indirect evidence	Pulborough, United KingdomHQ checked Sep 19, 2026	51-200	59 contacts →
	Indirect evidence “Welcome to Allsaved.” Source: RevenueBase Database · checked Sep 19, 2026
18	Premier Electrics	Partial evidence	Magherafelt, United KingdomHQ checked Sep 19, 2026	51-200	58 contacts →
	Partial evidence “Premier Electrics have been delivering exciting projects throughout Ireland, UK and Europe since 1993.” Source: RevenueBase Database · checked Sep 19, 2026
19	Quest Electrical LTD	Partial evidence	Burnley, United KingdomHQ checked Sep 19, 2026	11-50	57 contacts →
	Partial evidence “Quest (Quality Electrical Supplies and Technology) Ltd are a leading electrical wholesaler, NICEIC approved electrical contractor, and facilities management provider.” Source: RevenueBase Database · checked Sep 19, 2026
20	Orton Group LTD	Partial evidence	Wombourne, United KingdomHQ checked Sep 19, 2026	51-200	56 contacts →
	Partial evidence “01902 894871 Marking its 25th anniversary this year, Orton is a leading provider of electrical, mechanical, installation and maintenance services covering both commercial and…” Source: RevenueBase Database · checked Sep 19, 2026
21	Midwest Mechanical And Electrical Services LTD	Partial evidence	Wolverhampton, United KingdomHQ checked Sep 19, 2026	201-500	55 contacts →
	Partial evidence “Electrical and Mechanical Contractors.” Source: RevenueBase Database · checked Sep 19, 2026
22	Ceetech Limited	Indirect evidence	Ipswich, United KingdomHQ checked Sep 19, 2026	51-200	55 contacts →
	Indirect evidence “Engineering Services Contractor in the Building Services sector.” Source: RevenueBase Database · checked Sep 19, 2026
23	Pitts Wilson Limited	Partial evidence	Bradford, United KingdomHQ checked Sep 19, 2026	51-200	55 contacts →
	Partial evidence “Mechanical & Electrical Design and Installation company specialising in Commercial, Retail, Industrial and Leisure Projects.” Source: RevenueBase Database · checked Sep 19, 2026
24	RJ Power	Strong evidence	Sidcup, United KingdomHQ checked Sep 19, 2026	51-200	53 contacts →
	Strong evidence “RJ Power Group is a specialist electrical contracting business, providing engineering solutions in the power sector.” Source: RevenueBase Database · checked Sep 19, 2026
25	The Wiggett Group LTD	Partial evidence	Brentwood, United KingdomHQ checked Sep 19, 2026	201-500	51 contacts →
	Partial evidence “Wiggett Electrical has gone from strength to strength.” 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 contracting firms. 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 contracting firms.
Partial evidence: Its own public description names part of electrical contracting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name electrical contracting firms. 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 5,591 electrical contracting firms based in the United Kingdom

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Electrical contracting firms based in the United Kingdom at a glance

As of Sep 19, 2026

24.5%Verified-email coverage

5.0Average contacts per company

1-10Median size (employees)

6.0%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

3,578

11-50

1,617

51-200

222

201-500

501-1,000

1,001-5,000

10001+

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 5,591 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 contracting firms, 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 the United Kingdom whose own description of what they do matches “electrical contracting firms”. 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 contracting firms), 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 contracting firms, and records with no verified work email. Companies headquartered outside United Kingdom 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, 6,818 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 contracting firms by metro

Electrical contracting firms in London337
Electrical contracting firms in Manchester67
Electrical contracting firms in Bristol64
Electrical contracting firms in Nottingham62
Electrical contracting firms in Birmingham55
Electrical contracting firms in Leeds53
Electrical contracting firms in Sheffield51
Electrical contracting firms in Glasgow47
Electrical contracting firms in Leicester44
Electrical contracting firms in Liverpool41
Electrical contracting firms in Southampton41
Electrical contracting firms in Hull36
Electrical contracting firms in Northampton29
Electrical contracting firms in Peterborough29
Electrical contracting firms in Bournemouth28
Electrical contracting firms in Warrington28
Electrical contracting firms in Gloucester27
Electrical contracting firms in Portsmouth27
Electrical contracting firms in Edinburgh26
Electrical contracting firms in Huddersfield26

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 contracting firms, 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 contracting firms are there based in the United Kingdom?

RevenueBase identified 5,591 electrical contracting firms headquartered in the 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?

J Brand LTD, headquartered in London, tops this list with the largest team on record.

Which city has the most electrical contracting firms?

London leads with 337 headquartered companies, followed by Manchester (67) and Bristol (64).

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 6,818 verified decision-maker contacts tracked across these 5,591 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.