Company lists · Data refreshed November 2026

Top 23 Electrical engineering contractors based in the United Kingdom

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

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 6,959 companies tracked

RevenueBase identified 6,959 company matches for electrical engineering contractors associated with the United Kingdom as of November 2026 and tracks 76,942 professional contacts across them, including 25,542 with verified work emails. London is the largest hub.

This list covers company matches for electrical engineering contractors 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

6,959Companies

76,942Contacts tracked

25,542Verified emails

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The 23 largest electrical engineering contractors based in the United Kingdom

Ranked by team size

Top 23 of 6,959 company matches for electrical engineering contractors 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Murphy	Exact match	London, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	3,366 contacts →
	Exact match “Murphy is a leading international, multi-disciplined engineering and construction company founded in 1951 that improves life by delivering world-class infrastructure.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	City Electrical Factors	Exact match	Kenilworth, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	2,496 contacts →
	Exact match “City Electrical Factors Ltd is a private limited company established in 1951.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Bilfinger UK	Exact match	Warrington, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	2,207 contacts →
	Exact match “With a strong commitment to sustainability, Bilfinger UK stands out as a premier provider of engineering and maintenance services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	MJ Quinn	Exact match	Prescot, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	1,373 contacts →
	Exact match “At MJ Quinn we believe in creating great connections, with our customers, our people and our world.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	J Brand LTD	Exact match	London, United KingdomHQ recorded Nov 6, 2026	n/a	1,265 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Kelly Group	Exact match	Wembley, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	1,204 contacts →
	Exact match “Established in 1985 to support the emerging UK cable television market, Kelly Group has diversified to meet the needs of our clients.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	Amcogiffen	Exact match	Barnsley, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	871 contacts →
	Exact match “Who are we?” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Aureos	Exact match	London, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	760 contacts →
	Exact match “Aureos is a multi-disciplinary energy, transport networks specialist and engineering services provider, spanning the design, engineering, installation, maintenance, and crisis…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Freedom	Exact match	Leeds, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	740 contacts →
	Exact match “Freedom is a leading provider of facilities and power engineering services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Tclarke	Exact match	London, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	652 contacts →
	Exact match “TClarke is an industry leader in the design, installation, integration and maintenance of the digital, mechanical and electrical technologies and infrastructures that a 21st…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	SES Engineering Services	Exact match	York, United KingdomHQ recorded Nov 6, 2026	501-1,000	625 contacts →
	Exact match “We are a trusted partner to the UK construction sector, delivering advanced engineering and technology solutions that enhance building performance on some of the UK’s most complex…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Dodd Group	Exact match	Telford, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	564 contacts →
	Exact match “Dodd Group was formed in 1947 in Shropshire and has remained a privately owned family business.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Imtech	Exact match	Staines-upon-thames, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	517 contacts →
	Exact match “Imtech has rebranded to Dalkia UK.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Balfour Beatty Kilpatrick	Exact match	Glasgow, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	503 contacts →
	Exact match “As a leading mechanical & electrical engineering provider, we design, install and maintain the complex systems and technologies that underpin the UK’s national infrastructure and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Quartzelec Limited	Exact match	Rugby, United KingdomHQ recorded Nov 6, 2026	501-1,000	456 contacts →
	Exact match “Quartzelec is a leading independent electrical engineering group delivering solutions and services in both UK and global markets.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Nexos Group	Exact match	Aberdeen, United KingdomHQ recorded Nov 6, 2026	501-1,000	422 contacts →
	Exact match “A world of change brings wide-ranging challenges.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Trant Engineering LTD	Exact match	Southampton, United KingdomHQ recorded Nov 6, 2026	501-1,000	421 contacts →
	Exact match “Trant Engineering Ltd is one of the leading, privately owned engineering companies in the UK.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	City Building Engineering Services Cbes	Exact match	Glasgow, United KingdomHQ recorded Nov 6, 2026	501-1,000	380 contacts →
	Exact match “City Building Engineering Services is a construction and engineering company providing constructive solutions within a variety of sectors.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	VVB Engineering	Exact match	London, United KingdomHQ recorded Nov 6, 2026	201-500	355 contacts →
	Exact match “At VVB, we deliver mechanical, electrical, telecommunication, temporaries and fire engineering expertise and services for large-scale infrastructure projects.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	SPL Powerlines Uk&i	Exact match	Coatbridge, United KingdomHQ recorded Nov 6, 2026	501-1,000	337 contacts →
	Exact match “SPL Powerlines UK & I is a leading multi-disciplinary infrastructure specialist, offering end-to-end delivery across both rail and energy sectors with capabilities that set us…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Enerveo	Exact match	Birmingham, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	332 contacts →
	Exact match “Enerveo is a multi-disciplinary contracting business, with the skills and expertise to deliver complex projects in complex environments across a number of different service lines.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Engenda Group	Exact match	Runcorn, United KingdomHQ recorded Nov 6, 2026	501-1,000	325 contacts →
	Exact match “Engenda Group enhances the traditional supply of engineering services to deliver essential, value adding mechanical, electrical and instrumentation solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	ESG	Exact match	Romford, United KingdomHQ recorded Nov 6, 2026	201-500	252 contacts →
	Exact match “Essex Services Group (ESG) is a multi-disciplined MEP company founded in 1975, beginning as an electrical services contractor.” 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 “electrical engineering contractors”. 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 23 of 6,959 electrical engineering contractors based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 25,542 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Electrical engineering contractors based in the United Kingdom at a glance

As of Nov 6, 2026

33.2%Verified-email coverage

11.1Average contacts per company

1-10Median size (employees)

7.2%Largest-city concentration · London

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

3,727

11-50

2,200

51-200

504

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 6,959 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 engineering contractors” 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 25,542 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 engineering contractors 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 engineering contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many electrical engineering contractors are there based in the United Kingdom?

RevenueBase identified 6,959 company matches for electrical engineering contractors 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?

Murphy tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most electrical engineering contractors?

London leads with 503 company records, followed by Manchester (106) and Bristol (89).

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 25,542 professional contacts with verified work emails tracked across these 6,959 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.