Company lists · Data refreshed October 2026

Top 25 Electrical substation construction contractors based in the United Kingdom

Name: Electrical substation construction contractors 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 636 companies tracked

RevenueBase identified 636 company matches for electrical substation construction contractors associated with the United Kingdom as of October 2026 and tracks 5,382 professional contacts across them, including 1,786 with verified work emails. London is the largest hub.

This list covers company matches for electrical substation construction 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 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

636Companies

5,382Contacts tracked

1,786Verified emails

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The 25 largest electrical substation construction contractors based in the United Kingdom

Ranked by team size

Top 25 of 636 company matches for electrical substation construction contractors 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	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
2	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
3	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
4	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
5	Advantage NRG	Exact match	Chorley, United KingdomHQ recorded Oct 12, 2026	51-200	81 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 · Oct 12, 2026 · View company records in RevenueBase
6	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
7	Avidety	Exact match	Sittingbourne, United KingdomHQ recorded Oct 12, 2026	51-200	58 contacts →
	Exact match “Avidety specialise in the construction and maintenance of overhead and underground electricity networks.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
8	RJ Power	Exact match	Sidcup, United KingdomHQ recorded Oct 12, 2026	51-200	53 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 · Oct 12, 2026 · View company records in RevenueBase
9	Hvss High Voltage Substation Services LTD	Exact match	Watford, United KingdomHQ recorded Oct 12, 2026	11-50	51 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 · Oct 12, 2026 · View company records in RevenueBase
10	Acrastyle Limited	Exact match	Ulverston, United KingdomHQ recorded Oct 12, 2026	51-200	49 contacts →
	Exact match “Acrastyle Limited (UK) is a resource-rich engineering company that designs, manufactures, tests, installs, commissions, and maintains high-voltage sub-station protection and…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
11	Lloyd Morris Electrical LTD	Exact match	Wrexham, United KingdomHQ recorded Oct 12, 2026	51-200	48 contacts →
	Exact match “Lloyd Morris Electrical Limited is a company of Electrical Engineers, specialising in the design, manufacture and installation of Electrical Distribution and Control Systems for…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
12	NRT Group	Exact match	Banstead, United KingdomHQ recorded Oct 12, 2026	51-200	47 contacts →
	Exact match “Our aim is to be the first choice for electrical and engineering installations.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
13	GTDS	Exact match	Hill, United KingdomHQ recorded Oct 12, 2026	51-200	45 contacts →
	Exact match “GTDS was established in July 2004 to provide specialist installation and commissioning services to the major manufacturers, National Grid and the Distribution Network Operators…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
14	Durkin And Sons Power And Civil Engineers	Exact match	Perivale, United KingdomHQ recorded Oct 12, 2026	51-200	44 contacts →
	Exact match “Durkin and Sons have for 40 years been a go-to partner for National Grid, and DNO organisations, who continue to entrust the delivery of large HV & EHV cabling projects to us.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
15	Lewden	Exact match	Braintree, United KingdomHQ recorded Oct 12, 2026	51-200	42 contacts →
	Exact match “Lewden, a subsidiary of Palazzoli S.p.A, offers electrical power distribution solutions for industrial, construction, commercial, domestic and event sectors.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
16	Morris Line Engineering LTD	Exact match	Bridgend Industrial Estate, United KingdomHQ recorded Oct 12, 2026	51-200	41 contacts →
	Exact match “MLE was established in 1976 to provide specialist design & manufacturing services for 12kV – 145kV overhead line disconnectors & switches.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
17	Luton Engineering Services	Exact match	Manchester, United KingdomHQ recorded Oct 12, 2026	11-50	40 contacts →
	Exact match “LUTON ENGINEERING SERVICES is a civil engineering company based out of 6 Swan Street, Manchester, United Kingdom.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
18	Lagan Energy Engineering LTD	Exact match	Omagh, United KingdomHQ recorded Oct 12, 2026	51-200	38 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 · Oct 12, 2026 · View company records in RevenueBase
19	Substation Engineering Services LTD	Exact match	Stafford, United KingdomHQ recorded Oct 12, 2026	11-50	38 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 · Oct 12, 2026 · View company records in RevenueBase
20	EMI Co. LTD	Exact match	Gainsborough, United KingdomHQ recorded Oct 12, 2026	51-200	37 contacts →
	Exact match “Keeping power, water, and rail moving since 1966.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
21	Neary Construction	Exact match	Wigan, United KingdomHQ recorded Oct 12, 2026	51-200	35 contacts →
	Exact match “A civil engineering and construction company specialising in the High Voltage and Extra High Voltage sectors, providing a range of services to clients such as National Grid…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
22	Am1 Projects LTD	Exact match	Chatham, United KingdomHQ recorded Oct 12, 2026	51-200	34 contacts →
	Exact match “AM1 Projects are a multi-disciplined engineering company specialising in design and installation of electrical services across the U.K.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
23	Electricity Asset Services	Exact match	Dunfermline, United KingdomHQ recorded Oct 12, 2026	51-200	34 contacts →
	Exact match “Electricity Asset Services specialise in Procurement, Design, Management and execution of all works associated with High and Low voltage Underground Electricity Networks on behalf…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
24	Armah Switchgear LTD	Exact match	Washington, United KingdomHQ recorded Oct 12, 2026	51-200	33 contacts →
	Exact match “Established in 1991, Armah Switchgear has matured into one of the most well-known switchgear specialists in the UK.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
25	Industrial Switchgear Services LTD	Exact match	Hyde, United KingdomHQ recorded Oct 12, 2026	51-200	32 contacts →
	Exact match “ISS Ltd are a HV/LV Power Engineering company operating nationwide, undertaking Turnkey Electrical Distribution Projects and Site Service activities, including installation…” 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 substation construction 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 25 of 636 electrical substation construction contractors based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 1,786 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Electrical substation construction contractors based in the United Kingdom at a glance

As of Oct 12, 2026

33.2%Verified-email coverage

8.5Average contacts per company

1-10Median size (employees)

5.2%Largest-city concentration · London

Oct 12, 2026Page data refreshed

Companies by employee count

1-10

319

11-50

244

51-200

201-500

501-1,000

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 636 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 substation construction 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 1,786 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.

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

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

RevenueBase identified 636 company matches for electrical substation construction contractors 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?

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 substation construction contractors?

London leads with 33 company records, followed by Manchester (21) and Birmingham (7).

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 1,786 professional contacts with verified work emails tracked across these 636 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.

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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.