Company lists · Data refreshed September 2026

Top 25 Electricity transmission companies based in the United Kingdom

RevenueBase identified 83 company matches for electricity transmission companies associated with the United Kingdom as of September 2026 and tracks 5,496 professional contacts across them, including 1,310 with verified work emails. Leeds is the largest hub.

This list covers company matches for electricity transmission companies 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 September 19, 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 Sep 19, 2026 How this list was built
83Companies
5,496Contacts tracked
1,310Verified emails
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The 25 largest electricity transmission companies based in the United Kingdom

Ranked by team size
Top 25 of 83 company matches for electricity transmission companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 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 matchPerth, United KingdomHQ recorded Sep 19, 20261,001-5,0001,109 contacts →

Exact match

“We're responsible for maintaining the electricity networks supplying over 3.9 million homes and businesses across central southern England and north of the Central Belt of…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2Exact matchBelfast, United KingdomHQ recorded Sep 19, 20261,001-5,000723 contacts →

Exact match

“NIE Networks is responsible for the safe, secure and reliable supply of electricity to homes, farms and businesses across Northern Ireland.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3Exact matchLeeds, United KingdomHQ recorded Sep 19, 20261,001-5,000664 contacts →

Exact match

“Freedom is a leading provider of facilities and power engineering services.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4Exact matchBelfast, United KingdomHQ recorded Sep 19, 202651-200181 contacts →

Exact match

“SONI is Northern Ireland's Transmission System Operator (TSO).”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5Exact matchSalford, United KingdomHQ recorded Sep 19, 2026201-500108 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6Exact matchBromsgrove, United KingdomHQ recorded Sep 19, 202651-200105 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 · Sep 19, 2026 · View company records in RevenueBase
7Exact matchSittingbourne, United KingdomHQ recorded Sep 19, 202651-20056 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8Exact matchWatford, United KingdomHQ recorded Sep 19, 202611-5055 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 · Sep 19, 2026 · View company records in RevenueBase
9Exact matchBridgend Industrial Estate, United KingdomHQ recorded Sep 19, 202651-20040 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 · Sep 19, 2026 · View company records in RevenueBase
10Exact matchHaslingden, United KingdomHQ recorded Sep 19, 202651-20037 contacts →

Exact match

“High Voltage Engineering Solutions, from conceptual design, through to installation and O&M.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11Exact matchPerivale, United KingdomHQ recorded Sep 19, 202651-20035 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 · Sep 19, 2026 · View company records in RevenueBase
12Exact matchHyde, United KingdomHQ recorded Sep 19, 202651-20030 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 · Sep 19, 2026 · View company records in RevenueBase
13Exact matchStoke On Trent, United KingdomHQ recorded Sep 19, 202651-20026 contacts →

Exact match

“At ICS, part of United Infrastructure Group, we power the future with innovative, high-voltage electrical solutions.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14Exact matchCannock, United KingdomHQ recorded Sep 19, 202611-5024 contacts →

Exact match

“DAGEM Power are a dynamic and fast-growing SME at the forefront of bringing new renewable and nuclear energy projects online.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15Exact matchWigan, United KingdomHQ recorded Sep 19, 202651-20023 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 · Sep 19, 2026 · View company records in RevenueBase
16Exact matchAberdeen, United KingdomHQ recorded Sep 19, 202611-5023 contacts →

Exact match

“Since its inception in 2005, MES has built an impressive reputation in the specialist market of high voltage power engineering.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17Exact matchIpswich, United KingdomHQ recorded Sep 19, 202611-5020 contacts →

Exact match

“Maintech Power is a High Voltage (HV) installation and maintenance specialist.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18Exact matchExhall, United KingdomHQ recorded Sep 19, 202611-5019 contacts →

Exact match

“Established in 2009, PDS is a High Voltage installation and maintenance company dedicated to providing network power solutions.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19Exact matchElland, United KingdomHQ recorded Sep 19, 202651-20019 contacts →

Exact match

“If you’re looking for an experienced high voltage power contractor, with a highly-skilled team of multi-disciplined engineers, you’ve found it!”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20Exact matchWortley, United KingdomHQ recorded Sep 19, 202611-5016 contacts →

Exact match

“Unique in its operations, PES engineers substation equipment at its Leeds-based production facility, providing turnkey private network installation, independent contestable…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21Exact matchCheadle, United KingdomHQ recorded Sep 19, 202611-5016 contacts →

Exact match

“Primary Power Consulting is a UK‑based power engineering and project management consultancy specialising in the delivery of complex HV and EHV electricity infrastructure.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22Exact matchMaghera, United KingdomHQ recorded Sep 19, 202611-5016 contacts →

Exact match

“Grid Team Services efficiently constructs and installs quality end-to-end electrical transmission and distribution systems.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23Exact matchWinchester, United KingdomHQ recorded Sep 19, 202611-5015 contacts →

Exact match

“PSS POWER ENGINEERING LTD is a high-voltage electrical engineering company based in South East England, United Kingdom.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24Exact matchLoughgall, United KingdomHQ recorded Sep 19, 202611-5014 contacts →

Exact match

“CPD powerline Ltd is an industry leading specialist in the supply, construction and refurbishment of powerlines across the UK and Europe.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25Exact matchBirmingham, United KingdomHQ recorded Sep 19, 202611-5014 contacts →

Exact match

“Central Power Ltd is a High Voltage power engineering company, specialising in the design and construction of electrical power infrastructure for high voltage customers and…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

Showing 25 of 83 electricity transmission companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 1,310 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Electricity transmission companies based in the United Kingdom at a glance

As of Sep 19, 2026
23.8%Verified-email coverage
66.2Average contacts per company
11-50Median size (employees)
6.0%Largest-city concentration · Leeds
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
27
11-50
27
51-200
19
201-500
2
1,001-5,000
4

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 83 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 “electricity transmission companies” 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 1,310 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 September 19, 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 “electricity transmission companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many electricity transmission companies are there based in the United Kingdom?

RevenueBase identified 83 company matches for electricity transmission companies associated with the United Kingdom as of September 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?

Scottish And Southern Electricity Networks tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most electricity transmission companies?

Leeds leads with 5 company records, followed by London (5) and Belfast (3).

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 1,310 professional contacts with verified work emails tracked across these 83 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 September 19, 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.