Company lists · Data refreshed September 2026

Top 25 Power plant construction contractors based in the United Kingdom

Name: Power plant 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 Sep 17, 2026 132 companies tracked

RevenueBase identified 132 power plant construction contractors headquartered in the United Kingdom as of September 2026 and tracks 16,471 professional contacts across them, including 3,652 with verified work emails. London is the largest hub.

This list covers power plant construction contractors headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

132Companies

16,471Contacts tracked

3,652Verified emails

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The 25 largest power plant construction contractors based in the United Kingdom

Ranked by team size

Top 25 of 132 power plant construction contractors based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to power plant construction contractors: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Atkins	Indirect evidence	Epsom, United KingdomHQ checked Sep 17, 2026	10001+	9,297 contacts →
	Indirect evidence “Atkins is now AtkinsRéalis.” Source: RevenueBase Database · checked Sep 17, 2026
2	NEXOS	Partial evidence	Aberdeen, United KingdomHQ checked Sep 17, 2026	501-1,000	446 contacts →
	Partial evidence “A new breed of engineering, procurement and construction (EPC) provider that is turning next-gen energy into operational reality, through innovative solutions, partnerships and…” Source: RevenueBase Database · checked Sep 17, 2026
3	Ledwood Mechanical Engineering LTD	Partial evidence	Pembrokeshire, United KingdomHQ checked Sep 17, 2026	501-1,000	266 contacts →
	Partial evidence “Ledwood is an independent engineering, fabrication and construction company specialising in the delivery of complex projects across the oil, gas, process and energy industries.” Source: RevenueBase Database · checked Sep 17, 2026
4	Intec Energy Solutions	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	501-1,000	242 contacts →
	Partial evidence “INTEC Energy Solutions delivers best-in-class services in Engineering, Procurement, Construction (EPC), Battery Energy Storage Systems (BESS), Manufacturing, Project Development…” Source: RevenueBase Database · checked Sep 17, 2026
5	Framatome UK	Indirect evidence	Bristol, United KingdomHQ checked Sep 17, 2026	201-500	181 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
6	Eastgate Engineering	Partial evidence	Thornaby-on-tees, United KingdomHQ checked Sep 17, 2026	201-500	163 contacts →
	Partial evidence “Eastgate Engineering is an Electrical and Instrumentation contractor that delivers complex, high-risk infrastructure projects with cost certainty, without compromising safety or…” Source: RevenueBase Database · checked Sep 17, 2026
7	PN Daly Limited	Indirect evidence	Rochdale, United KingdomHQ checked Sep 17, 2026	501-1,000	141 contacts →
	Indirect evidence “P.N.” Source: RevenueBase Database · checked Sep 17, 2026
8	Belectric UK Member Of Elevion Group	Strong evidence	Brinkworth, United KingdomHQ checked Sep 17, 2026	51-200	95 contacts →
	Strong evidence “BELECTRIC UK is part of BELECTRIC, one of Europe's leading EPC service providers in the development, construction, and operation of solar power plants.” Source: RevenueBase Database · checked Sep 17, 2026
9	Copius Group	Partial evidence	Newtownabbey, United KingdomHQ checked Sep 17, 2026	201-500	81 contacts →
	Partial evidence “Copius Group is a premier provider of construction and engineering services, delivering comprehensive solutions for offshore and onshore projects across the globe.” Source: RevenueBase Database · checked Sep 17, 2026
10	N-Ergise	Indirect evidence	Great Yarmouth, United KingdomHQ checked Sep 17, 2026	51-200	76 contacts →
	Indirect evidence “Providing innovative solutions to the Infrastructure, Energy Transition, Nuclear & Defence and Renewables sectors, Services include commissioning, decommissioning, hook-ups…” Source: RevenueBase Database · checked Sep 17, 2026
11	JBA Engineering	Partial evidence	Wynyard, United KingdomHQ checked Sep 17, 2026	11-50	63 contacts →
	Partial evidence “JBA are industry-leading consultants, providing flexible engineering and design solutions, procurement, and construction services.” Source: RevenueBase Database · checked Sep 17, 2026
12	Kelvin Power Member Of Vinci Energies	Partial evidence	Leicester, United KingdomHQ checked Sep 17, 2026	51-200	57 contacts →
	Partial evidence “Kelvin Power provides expert advice and design solutions to the global power industry and the renewable energy sector.” Source: RevenueBase Database · checked Sep 17, 2026
13	JGC Engineering And Technical Services LTD	Indirect evidence	Thurso, United KingdomHQ checked Sep 17, 2026	51-200	42 contacts →
	Indirect evidence “JGC is one of the UK's leading engineering companies with the breadth and depth of technical expertise to respond to the daily complex challenges of major engineering projects.” Source: RevenueBase Database · checked Sep 17, 2026
14	GES Group	Indirect evidence	Ballymena, United KingdomHQ checked Sep 17, 2026	51-200	38 contacts →
	Indirect evidence “Established over 40 years ago as Grants Electrical Services (NI) Ltd, we have grown into GES Group, a leading Electrical and Mechanical Engineering company, serving customers…” Source: RevenueBase Database · checked Sep 17, 2026
15	Enerfac Solutions	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	51-200	38 contacts →
	Partial evidence “Enerfac Solutions is a global leader in Engineering, Procurement, Construction, and Commissioning (EPCC), delivering innovative, reliable, and technologically advanced services…” Source: RevenueBase Database · checked Sep 17, 2026
16	Luton Engineering Services	Indirect evidence	Manchester, United KingdomHQ checked Sep 17, 2026	11-50	34 contacts →
	Indirect evidence “LUTON ENGINEERING SERVICES is a civil engineering company based out of 6 Swan Street, Manchester, United Kingdom.” Source: RevenueBase Database · checked Sep 17, 2026
17	Integrity	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 17, 2026	11-50	33 contacts →
	Indirect evidence “We enable safe, reliable operations and reduced outages for energy assets across the globe through our people, our expertise, and our commitment to deliver Integrated Service…” Source: RevenueBase Database · checked Sep 17, 2026
18	CDS Energy Services	Indirect evidence	Hull, United KingdomHQ checked Sep 17, 2026	51-200	33 contacts →
	Indirect evidence “CDS Energy Services combines talented and experienced people with a state-of the art facility in the heart of the UK to provide full turnkey solutions to a range of blue chip…” Source: RevenueBase Database · checked Sep 17, 2026
19	Eesb Engineering Limited	Indirect evidence	Birkenhead, United KingdomHQ checked Sep 17, 2026	11-50	33 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
20	Target Site Services LTD	Indirect evidence	Datchet, United KingdomHQ checked Sep 17, 2026	51-200	30 contacts →
	Indirect evidence “Established in 1989 Target Site Services are an Electrical & Mechanical Engineering Company who for over twenty-five years have been providing a first-class service to the…” Source: RevenueBase Database · checked Sep 17, 2026
21	Enisca	Strong evidence	Cookstown, United KingdomHQ checked Sep 17, 2026	51-200	28 contacts →
	Strong evidence “Enisca is a multi-disciplinary design, engineering and construction business operating in the power and environmental sectors delivering innovative, sustainable and quality…” Source: RevenueBase Database · checked Sep 17, 2026
22	Gemec Limited	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	11-50	26 contacts →
	Partial evidence “GEMEC’s main activity and expertise is the Engineering, Procurement and Construction of Renewable energy projects.” Source: RevenueBase Database · checked Sep 17, 2026
23	Power System Services LTD	Partial evidence	Chesterfield, United KingdomHQ checked Sep 17, 2026	51-200	24 contacts →
	Partial evidence “Power System Services is an engineering company that has been providing Engineering solutions for heavy industry since 1996.” Source: RevenueBase Database · checked Sep 17, 2026
24	Switchon Power	Partial evidence	Stourbridge, United KingdomHQ checked Sep 17, 2026	11-50	20 contacts →
	Partial evidence “SwitchOn Power is a specialized engineering company, focusing on renewable energy generation projects.” Source: RevenueBase Database · checked Sep 17, 2026
25	EPS Construction LTD	Partial evidence	Swansea, United KingdomHQ checked Sep 17, 2026	11-50	17 contacts →
	Partial evidence “EPS Construction is your full service engineering partner, offering solutions in your everyday needs.” Source: RevenueBase Database · checked Sep 17, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: power plant construction contractors. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names power plant construction contractors.
Partial evidence: Its own public description names part of power plant construction contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name power plant construction contractors. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 132 power plant construction contractors based in the United Kingdom

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Power plant construction contractors based in the United Kingdom at a glance

As of Sep 17, 2026

22.2%Verified-email coverage

124.8Average contacts per company

11-50Median size (employees)

10.6%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

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 132 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among power plant construction contractors, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United Kingdom whose own description of what they do matches “power plant construction contractors”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names power plant construction contractors), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among power plant construction contractors, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 3,652 across the full list. 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.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names power plant construction contractors, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

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

RevenueBase identified 132 power plant construction contractors headquartered in the United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Atkins, headquartered in Epsom, tops this list with the largest team on record.

Which city has the most power plant construction contractors?

London leads with 14 headquartered companies, followed by Aberdeen (5) and Bristol (4).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 3,652 verified decision-maker contacts tracked across these 132 companies.

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 Smart Search, 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.