Company lists · Data refreshed November 2026

Top 25 Electrical system commissioning services based in the United Kingdom

RevenueBase identified 2,269 company matches for electrical system commissioning services associated with the United Kingdom as of November 2026 and tracks 11,101 professional contacts across them, including 3,331 with verified work emails. London is the largest hub.

This list covers company matches for electrical system commissioning services 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
2,269Companies
11,101Contacts tracked
3,331Verified emails
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The 25 largest electrical system commissioning services based in the United Kingdom

Ranked by team size
Top 25 of 2,269 company matches for electrical system commissioning services 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 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
2Exact 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
3Exact matchStockton On Tees, United KingdomHQ recorded Nov 6, 2026201-500111 contacts →

Exact match

“LJJ formed in 2001 as a private limited company and is a multi-disciplined organisation capable of completing major mechanical, electrical and public health service contracts in a…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact 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
5Exact matchNewton-le-willows, United KingdomHQ recorded Nov 6, 202651-20083 contacts →

Exact match

“End Systems Limited are a highly respected national service provider to the construction industry and have offered specialist solutions to the building services sector since 1976.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact 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
7Exact 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
8Exact 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
9Exact 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
10Exact matchSidcup, United KingdomHQ recorded Nov 6, 202651-20056 contacts →

Exact match

“RJ Power Group is a specialist electrical contracting business, providing engineering solutions in the power sector.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchWeybridge, United KingdomHQ recorded Nov 6, 202651-20054 contacts →

Exact match

“Since 1998, Powercor have specialised in every aspect of electrical engineering.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchBanstead, United KingdomHQ recorded Nov 6, 202651-20052 contacts →

Exact match

“Our aim is to be the first choice for electrical and engineering installations.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchWatford, United KingdomHQ recorded Nov 6, 202611-5052 contacts →

Exact match

“HVSS (High Voltage Substation Services) was formed in 2009 specializing in installation and commissioning of High Voltage Substations Systems up to 400kV.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchInverness, United KingdomHQ recorded Nov 6, 202611-5051 contacts →

Exact match

“NES is an Industrial and Commercial Electrical Engineering and Contracting business, based in the North and North East of Scotland.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchLockington, United KingdomHQ recorded Nov 6, 202651-20043 contacts →

Exact match

“Norwood Electrical (UK) Ltd offer a full range of electrical services and specialises in electrical compliance.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchBuxton, United KingdomHQ recorded Nov 6, 202651-20043 contacts →

Exact match

“Process Control Services (PCS) is an industrial electrical and data contractor, serving a wide range of sectors across the UK.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchBradford, United KingdomHQ recorded Nov 6, 202611-5041 contacts →

Exact match

“JLEC Electrical is committed to providing premium quality along with competitive service to all customers new and old.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchGrimsby, United KingdomHQ recorded Nov 6, 202651-20040 contacts →

Exact match

“Established over 20 years ago by our Chairman, F.E.S.(EX) is a leading provider of a range of E, I&M services for all industries across both hazardous and non- hazardous…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchCheltenham, United KingdomHQ recorded Nov 6, 202651-20040 contacts →

Exact match

“Calbarrie Compliance Services Ltd (Calbarrie) is the UK’s market leader in electrical compliance services and has been trading within the Health & Safety and Compliance sectors…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchBridgend, United KingdomHQ recorded Nov 6, 2026201-50040 contacts →

Exact match

“JW Morris is an electrical and mechanical engineering company providing installation, manufacturing and wholesaling services to industry and commerce for domestic and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchGainsborough, United KingdomHQ recorded Nov 6, 202651-20039 contacts →

Exact match

“Keeping power, water, and rail moving since 1966.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchDungannon, United KingdomHQ recorded Nov 6, 202651-20039 contacts →

Exact match

“PMK has been providing comprehensive electrical engineering services across the UK and Ireland for over 40 years.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchStafford, United KingdomHQ recorded Nov 6, 202611-5039 contacts →

Exact match

“Specialising in High Voltage Substation Installation & Commissioning, Site & Project Management, Refurbishment, Maintenance, SES Ltd has established a solid reputation for…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchOmagh, United KingdomHQ recorded Nov 6, 202651-20038 contacts →

Exact match

“Lagan Energy Engineering Ltd provides quality assured electrical engineering, contracting and consultancy services to customers on various continents.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchChorley, United KingdomHQ recorded Nov 6, 202651-20038 contacts →

Exact match

“RJ Urmson Group consists of 5 companies: RJ Urmson Commissioning Engineers Ltd, Urmson LLP, National Hygiene Services Ltd, Urmson Fire Specialists Ltd and B&R Consulting Engineers…”

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

Showing 25 of 2,269 electrical system commissioning services based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 3,331 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Electrical system commissioning services based in the United Kingdom at a glance

As of Nov 6, 2026
30.0%Verified-email coverage
4.9Average contacts per company
1-10Median size (employees)
6.5%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
1,394
11-50
624
51-200
87
201-500
6
501-1,000
4
1,001-5,000
3
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 2,269 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 system commissioning services” 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 3,331 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 system commissioning services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many electrical system commissioning services are there based in the United Kingdom?

RevenueBase identified 2,269 company matches for electrical system commissioning services 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?

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

Which city has the most electrical system commissioning services?

London leads with 148 company records, followed by Manchester (41) and Nottingham (26).

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 3,331 professional contacts with verified work emails tracked across these 2,269 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.