Company lists · Data refreshed September 2026

Top 25 Power systems engineering companies based in the United Kingdom

Name: Power systems engineering companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 3,072 companies tracked

RevenueBase identified 3,072 company matches for power systems engineering companies associated with the United Kingdom as of September 2026 and tracks 28,206 professional contacts across them, including 8,745 with verified work emails. London is the largest hub.

This list covers company matches for power systems engineering 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 17, 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 17, 2026 How this list was built

3,072Companies

28,206Contacts tracked

8,745Verified emails

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The 25 largest power systems engineering companies based in the United Kingdom

Ranked by team size

Top 25 of 3,072 company matches for power systems engineering companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 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	Kelly Group	Exact match	Wembley, United KingdomHQ recorded Sep 17, 2026	1,001-5,000	1,053 contacts →
	Exact match “Established in 1985 to support the emerging UK cable television market, Kelly Group has diversified to meet the needs of our clients.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	Penspen	Exact match	London, United KingdomHQ recorded Sep 17, 2026	1,001-5,000	1,007 contacts →
	Exact match “Penspen designs, maintains, and optimises energy infrastructure to improve access to secure and sustainable energy for communities worldwide.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	Freedom	Exact match	Leeds, United KingdomHQ recorded Sep 17, 2026	1,001-5,000	664 contacts →
	Exact match “Freedom is a leading provider of facilities and power engineering services.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	Balfour Beatty Kilpatrick	Exact match	Glasgow, United KingdomHQ recorded Sep 17, 2026	1,001-5,000	456 contacts →
	Exact match “As a leading mechanical & electrical engineering provider, we design, install and maintain the complex systems and technologies that underpin the UK’s national infrastructure and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	Quartzelec Limited	Exact match	Rugby, United KingdomHQ recorded Sep 17, 2026	501-1,000	412 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 · Sep 17, 2026 · View company records in RevenueBase
6	Brush Group	Exact match	Loughborough, United KingdomHQ recorded Sep 17, 2026	501-1,000	367 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 · Sep 17, 2026 · View company records in RevenueBase
7	SPL Powerlines Uk&i	Exact match	Coatbridge, United KingdomHQ recorded Sep 17, 2026	501-1,000	337 contacts →
	Exact match “SPL Powerlines UK & I is a leading multi-disciplinary infrastructure specialist, offering end-to-end delivery across both rail and energy sectors with capabilities that set us…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	Intec Energy Solutions	Exact match	London, United KingdomHQ recorded Sep 17, 2026	501-1,000	242 contacts →
	Exact match “INTEC Energy Solutions delivers best-in-class services in Engineering, Procurement, Construction (EPC), Battery Energy Storage Systems (BESS), Manufacturing, Project Development…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	Dale Power Solutions	Exact match	Scarborough, United KingdomHQ recorded Sep 17, 2026	201-500	214 contacts →
	Exact match “Founded in 1935 Dale Power Solutions Ltd have been providing reliable; secure power solutions for mission critical services & systems throughout the world.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	Actemium UK	Exact match	Birmingham, United KingdomHQ recorded Sep 17, 2026	501-1,000	190 contacts →
	Exact match “At Actemium UK, we are expert electrical, automation and mechanical engineers delivering bespoke engineering solutions across industry, infrastructure and beyond.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	IQA Elecnor	Exact match	Glasgow, United KingdomHQ recorded Sep 17, 2026	201-500	184 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 · Sep 17, 2026 · View company records in RevenueBase
12	WB Power Services LTD	Exact match	Heanor, United KingdomHQ recorded Sep 17, 2026	51-200	168 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 · Sep 17, 2026 · View company records in RevenueBase
13	Drive System Design	Exact match	Leamington Spa (uk), United KingdomHQ recorded Sep 17, 2026	51-200	159 contacts →
	Exact match “Drive System Design (DSD), a Hinduja Tech company, are internationally recognised experts in the rapid development of next-generation electric and hybrid powertrains, internal…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	Z-Tech Control Systems LTD	Exact match	Swavesey, United KingdomHQ recorded Sep 17, 2026	201-500	156 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	Asee Group	Exact match	Newry, United KingdomHQ recorded Sep 17, 2026	51-200	151 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 · Sep 17, 2026 · View company records in RevenueBase
16	PN Daly Limited	Exact match	Rochdale, United KingdomHQ recorded Sep 17, 2026	501-1,000	141 contacts →
	Exact match “P.N.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	MCS	Exact match	Bristol, United KingdomHQ recorded Sep 17, 2026	51-200	138 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 · Sep 17, 2026 · View company records in RevenueBase
18	Powerstar	Exact match	Sheffield, United KingdomHQ recorded Sep 17, 2026	51-200	135 contacts →
	Exact match “A D2Zero Company With a 24-year track record, Powerstar is an industry leader in electrification, specialising in designing and manufacturing cutting-edge power management tech…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	Powersystems	Exact match	Bristol, United KingdomHQ recorded Sep 17, 2026	51-200	126 contacts →
	Exact match “Powered by People.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	AF Switchgear	Exact match	Sutton-in-ashfield, United KingdomHQ recorded Sep 17, 2026	201-500	117 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 · Sep 17, 2026 · View company records in RevenueBase
21	TES Group	Exact match	Cookstown, United KingdomHQ recorded Sep 17, 2026	51-200	116 contacts →
	Exact match “TES are Mechanical & Electrical Specialists, working to the highest standard of engineering excellence.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	Darke & Taylor LTD	Exact match	Oxfordshire, United KingdomHQ recorded Sep 17, 2026	51-200	112 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 · Sep 17, 2026 · View company records in RevenueBase
23	G & A Barnie Group LTD	Exact match	Inverness, United KingdomHQ recorded Sep 17, 2026	201-500	109 contacts →
	Exact match “Premier quality workmanship and personal attention are characteristics of G&A Barnie.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Excalon LTD	Exact match	Salford, United KingdomHQ recorded Sep 17, 2026	201-500	108 contacts →
	Exact match “Excalon is one of the Britain’s leading UK Electrical Utility Service Providers.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	Rock Power Connections LTD	Exact match	Bromsgrove, United KingdomHQ recorded Sep 17, 2026	51-200	105 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 17, 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 “power systems engineering companies”. 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 3,072 power systems engineering companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 8,745 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Power systems engineering companies based in the United Kingdom at a glance

As of Sep 17, 2026

31.0%Verified-email coverage

9.2Average contacts per company

1-10Median size (employees)

6.1%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

1,650

11-50

1,129

51-200

196

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 3,072 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 “power systems engineering 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 8,745 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 17, 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.

Power systems engineering companies 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 “power systems engineering companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many power systems engineering companies are there based in the United Kingdom?

RevenueBase identified 3,072 company matches for power systems engineering 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?

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

Which city has the most power systems engineering companies?

London leads with 187 company records, followed by Manchester (60) and Nottingham (43).

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 8,745 professional contacts with verified work emails tracked across these 3,072 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 17, 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.