Company lists · Data refreshed October 2026

Top 25 Electrical contractors for power plants based in the United Kingdom

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

Compiled by the RevenueBase Data Team Data refreshed Oct 12, 2026 3,587 companies tracked

RevenueBase identified 3,587 company matches for electrical contractors for power plants associated with the United Kingdom as of October 2026 and tracks 25,725 professional contacts across them, including 7,165 with verified work emails. London is the largest hub.

This list covers company matches for electrical contractors for power plants 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 October 12, 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 Oct 12, 2026 How this list was built

3,587Companies

25,725Contacts tracked

7,165Verified emails

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The 25 largest electrical contractors for power plants based in the United Kingdom

Ranked by team size

Top 25 of 3,587 company matches for electrical contractors for power plants based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 12, 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	Freedom	Exact match	Leeds, United KingdomHQ recorded Oct 12, 2026	1,001-5,000	728 contacts →
	Exact match “Freedom is a leading provider of facilities and power engineering services.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
2	Dodd Group	Exact match	Telford, United KingdomHQ recorded Oct 12, 2026	1,001-5,000	552 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 · Oct 12, 2026 · View company records in RevenueBase
3	Quartzelec Limited	Exact match	Rugby, United KingdomHQ recorded Oct 12, 2026	501-1,000	438 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 · Oct 12, 2026 · View company records in RevenueBase
4	Rainham Industrial Services LTD	Exact match	Essex, United KingdomHQ recorded Oct 12, 2026	501-1,000	264 contacts →
	Exact match “Rainham provides specialist industrial services that support the installation, maintenance, refurbishment, decommissioning and replacement of large industrial plants and building…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
5	Brush Group	Exact match	Loughborough, United KingdomHQ recorded Oct 12, 2026	501-1,000	178 contacts →
	Exact match “We support the global drive to net zero with innovative, engineered solutions that address grid resilience and systems challenges, facilitate electrification of transport and…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
6	MCS	Exact match	Bristol, United KingdomHQ recorded Oct 12, 2026	51-200	151 contacts →
	Exact match “MCS Ltd are specialist building services engineers covering all aspects of commercial and industrial building services and infrastructure engineering across varying market sectors.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
7	PN Daly Limited	Exact match	Rochdale, United KingdomHQ recorded Oct 12, 2026	501-1,000	147 contacts →
	Exact match “P.N.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
8	Powersystems	Exact match	Bristol, United KingdomHQ recorded Oct 12, 2026	51-200	127 contacts →
	Exact match “Powered by People.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
9	Asee Group	Exact match	Newry, United KingdomHQ recorded Oct 12, 2026	51-200	122 contacts →
	Exact match “ASEE Group is a leader in mechanical and electrical engineering, specialising in generator integration and full-service installations for 45+ years.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
10	WB Power Services LTD	Exact match	Heanor, United KingdomHQ recorded Oct 12, 2026	51-200	120 contacts →
	Exact match “WB Power Services Ltd (now proudly part of Rehlko) provide critical power services to some of the UK’s most important businesses and organisations, ensuring essential services are…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
11	G & A Barnie Group LTD	Exact match	Inverness, United KingdomHQ recorded Oct 12, 2026	201-500	117 contacts →
	Exact match “Premier quality workmanship and personal attention are characteristics of G&A Barnie.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
12	Darke & Taylor LTD	Exact match	Oxfordshire, United KingdomHQ recorded Oct 12, 2026	51-200	114 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
13	Excalon LTD	Exact match	Salford, United KingdomHQ recorded Oct 12, 2026	201-500	110 contacts →
	Exact match “Excalon is one of the Britain’s leading UK Electrical Utility Service Providers.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
14	Sinewave	Exact match	Swindon, United KingdomHQ recorded Oct 12, 2026	51-200	105 contacts →
	Exact match “Sinewave are a specialist engineering company who provide High and Low voltage electrical services across the UK.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
15	Rock Power Connections LTD	Exact match	Bromsgrove, United KingdomHQ recorded Oct 12, 2026	51-200	104 contacts →
	Exact match “Rock Power Connections are experts in electrical connections with a proven track record of quality and safety.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
16	DPL Group LTD	Exact match	Ipswich, United KingdomHQ recorded Oct 12, 2026	51-200	102 contacts →
	Exact match “DPL Group consists of multiple divisions, including Mechanical & Electrical Installations, Fire & Security Installations and Renewable Technologies.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
17	MSE LTD	Exact match	Redditch, United KingdomHQ recorded Oct 12, 2026	11-50	102 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
18	Oakray Limited	Exact match	Enfield, United KingdomHQ recorded Oct 12, 2026	201-500	101 contacts →
	Exact match “Oakray was established in 1979 and we are very proud of our long heritage.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
19	PJD Mechanical Engineering	Exact match	Doncaster, United KingdomHQ recorded Oct 12, 2026	51-200	90 contacts →
	Exact match “PJD Mechanical Engineering Ltd Ltd has worked with a number of leading clients, operators and technology companies throughout the UK energy sector for over 30 years.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
20	Grant Walker Engineering	Exact match	London, United KingdomHQ recorded Oct 12, 2026	51-200	87 contacts →
	Exact match “Grant Walker Engineering specialise in the complete installation of Electrical and Mechanical systems across all work sectors including quality office developments, commercial and…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
21	AKD	Exact match	Edinburgh, United KingdomHQ recorded Oct 12, 2026	51-200	80 contacts →
	Exact match “AKD’s clients get quick results, normally leading to reduced costs and gaining an improved service.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
22	Global Substation Solutions LTD	Exact match	Hebburn, United KingdomHQ recorded Oct 12, 2026	51-200	75 contacts →
	Exact match “Established in 2006, Global Substation Solutions Ltd (GSS) are a dynamic power system engineering company, providing turnkey project services to the UK and international…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
23	AEM LTD	Exact match	Belfast, United KingdomHQ recorded Oct 12, 2026	51-200	74 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
24	Midwest Mechanical And Electrical Services LTD	Exact match	Wolverhampton, United KingdomHQ recorded Oct 12, 2026	201-500	64 contacts →
	Exact match “Electrical and Mechanical Contractors.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
25	MKE Engineering Group	Exact match	Sittingbourne, United KingdomHQ recorded Oct 12, 2026	51-200	63 contacts →
	Exact match “MKE Engineering (Mid Kent Electrical) is the largest independent engineering service provider of its kind in the South East, operating from 3 different sites covering Kent…” Recorded in the RevenueBase company graph · Oct 12, 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 contractors for power plants”. 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 25 of 3,587 electrical contractors for power plants based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 7,165 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Electrical contractors for power plants based in the United Kingdom at a glance

As of Oct 12, 2026

27.9%Verified-email coverage

7.2Average contacts per company

1-10Median size (employees)

5.3%Largest-city concentration · London

Oct 12, 2026Page data refreshed

Companies by employee count

1-10

2,024

11-50

1,249

51-200

220

201-500

501-1,000

1,001-5,000

5,001-10,000

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 3,587 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 contractors for power plants” 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 7,165 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 October 12, 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 contractors for power plants 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 contractors for power plants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many electrical contractors for power plants are there based in the United Kingdom?

RevenueBase identified 3,587 company matches for electrical contractors for power plants associated with the United Kingdom as of October 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?

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

Which city has the most electrical contractors for power plants?

London leads with 191 company records, followed by Manchester (60) and Bristol (42).

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 7,165 professional contacts with verified work emails tracked across these 3,587 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 October 12, 2026.

Ready to reach these companies? Verified emails and direct dials for all 3,587 electrical contractors for power plants based in the United Kingdom. Start with a free account, no credit card.

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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.