Company lists · Data refreshed November 2026

Top 25 Electrical power contractors based in the United Kingdom

RevenueBase identified 5,177 company matches for electrical power contractors associated with the United Kingdom as of November 2026 and tracks 29,989 professional contacts across them, including 8,352 with verified work emails. London is the largest hub.

This list covers company matches for electrical power 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
5,177Companies
29,989Contacts tracked
8,352Verified emails
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The 25 largest electrical power contractors based in the United Kingdom

Ranked by team size
Top 25 of 5,177 company matches for electrical power 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLeeds, United KingdomHQ recorded Nov 6, 20261,001-5,000740 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
2Exact matchRugby, United KingdomHQ recorded Nov 6, 2026501-1,000456 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
3Exact matchGloucester, United KingdomHQ recorded Nov 6, 2026501-1,000360 contacts →

Exact match

“With over 850 staff, we are one of the UK’s leading electrical contractors and solar PV installers.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchGlasgow, United KingdomHQ recorded Nov 6, 2026201-500204 contacts →

Exact match

“IQA lead the way in designing, building, maintaining, and upgrading electrical utility networks, telecommunication networks, EVCP and electrical infrastructure for both the public…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchBedlington, United KingdomHQ recorded Nov 6, 2026201-500203 contacts →

Exact match

“JKM Electricals is a well-established company which has built up a first-class reputation, Through successfully delivering high-quality workmanship.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchRochdale, United KingdomHQ recorded Nov 6, 2026501-1,000198 contacts →

Exact match

“P.N.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchBrierley Hill, United KingdomHQ recorded Nov 6, 2026201-500139 contacts →

Exact match

“S&R Construction was founded in 1998 with a view to providing affordable, sustainable gas, water and electric mains and utility installation services for a broad range of clients.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchSutton-in-ashfield, United KingdomHQ recorded Nov 6, 2026201-500125 contacts →

Exact match

“AF Switchgear is one of the UK's largest switchgear manufacturers and set the standard for LV Switchgear and Power Distribution.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchHeanor, United KingdomHQ recorded Nov 6, 202651-200124 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 · Nov 6, 2026 · View company records in RevenueBase
10Exact matchInverness, United KingdomHQ recorded Nov 6, 2026201-500120 contacts →

Exact match

“Premier quality workmanship and personal attention are characteristics of G&A Barnie.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchNewry, United KingdomHQ recorded Nov 6, 202651-200115 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 · Nov 6, 2026 · View company records in RevenueBase
12Exact matchSalford, United KingdomHQ recorded Nov 6, 2026201-500114 contacts →

Exact match

“Excalon is one of the Britain’s leading UK Electrical Utility Service Providers.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchBromsgrove, United KingdomHQ recorded Nov 6, 202651-200110 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 · Nov 6, 2026 · View company records in RevenueBase
14Exact matchSwindon, United KingdomHQ recorded Nov 6, 202651-200109 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 · Nov 6, 2026 · View company records in RevenueBase
15Exact matchChorley, United KingdomHQ recorded Nov 6, 202651-20086 contacts →

Exact match

“Advantage NRG is a specialist, labour only, sub-contractor using its own skilled labour force to build and maintain electrical transmission systems.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchHemel Hempstead, United KingdomHQ recorded Nov 6, 202651-20082 contacts →

Exact match

“Glenelly Infrastructure Solutions Ltd (a United Infrastructure Group company) specialises in providing turnkey services in Power Distribution, Smart Metering, Fault Finding, and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchEdinburgh, United KingdomHQ recorded Nov 6, 202651-20082 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 · Nov 6, 2026 · View company records in RevenueBase
18Exact matchBraintree, United KingdomHQ recorded Nov 6, 202651-20072 contacts →

Exact match

“Securing your power needs to deliver your electrification plans with certainty.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchWolverhampton, United KingdomHQ recorded Nov 6, 2026201-50065 contacts →

Exact match

“Electrical and Mechanical Contractors.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchMagherafelt, United KingdomHQ recorded Nov 6, 202651-20062 contacts →

Exact match

“Premier Electrics have been delivering exciting projects throughout Ireland, UK and Europe since 1993.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchBirkenhead, United KingdomHQ recorded Nov 6, 202651-20062 contacts →

Exact match

“The SeaKing Group offers specialist electrical engineering services to the marine, industrial, commercial, military and offshore sectors.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchBradford, United KingdomHQ recorded Nov 6, 202651-20062 contacts →

Exact match

“Mechanical & Electrical Design and Installation company specialising in Commercial, Retail, Industrial and Leisure Projects.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchBrentwood, United KingdomHQ recorded Nov 6, 2026201-50061 contacts →

Exact match

“Wiggett Electrical has gone from strength to strength.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchClayton West, United KingdomHQ recorded Nov 6, 202651-20061 contacts →

Exact match

“AUS is a specialist supplier to the electricity distribution and transmission, rail, utility arboricultural, and telecommunications industries.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchSittingbourne, United KingdomHQ recorded Nov 6, 202651-20060 contacts →

Exact match

“Avidety specialise in the construction and maintenance of overhead and underground electricity networks.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 5,177 electrical power contractors based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 8,352 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Electrical power contractors based in the United Kingdom at a glance

As of Nov 6, 2026
27.9%Verified-email coverage
5.8Average contacts per company
1-10Median size (employees)
6.2%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
3,129
11-50
1,449
51-200
206
201-500
18
501-1,000
7
1,001-5,000
6
10001+
3

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 5,177 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 power 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 8,352 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.

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 power contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 5,177 company matches for electrical power 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?

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

Which city has the most electrical power contractors?

London leads with 320 company records, followed by Manchester (76) and Bristol (60).

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 8,352 professional contacts with verified work emails tracked across these 5,177 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.

Ready to reach these companies? Verified emails and direct dials for all 5,177 electrical power contractors 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.