Company lists · Data refreshed September 2026

Top 25 Power plant engineering contractors based in the United Kingdom

Name: Power plant engineering 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 158 companies tracked

RevenueBase identified 158 power plant engineering contractors headquartered in the United Kingdom as of September 2026 and tracks 3,360 professional contacts across them, including 600 with verified work emails. London is the largest hub.

This list covers power plant engineering 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

158Companies

3,360Contacts tracked

600Verified emails

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

Ranked by team size

Top 25 of 158 power plant engineering 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 engineering 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	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
2	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
3	Enka UK Construction Limited	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	10001+	104 contacts →
	Indirect evidence “ENKA UK Construction Limited is a commercial real estate company based out of 7 Henrietta Street C/O Redfern Legal LLP, London, United Kingdom.” Source: RevenueBase Database · checked Sep 17, 2026
4	Taylor And Fraser	Strong evidence	Paisley, United KingdomHQ checked Sep 17, 2026	51-200	88 contacts →
	Strong evidence “As a leading contractor within the construction and engineering industry, and now a proud subsidiary of Suir Engineering, we deliver projects across a range of markets to our…” Source: RevenueBase Database · checked Sep 17, 2026
5	PJD Mechanical Engineering	Partial evidence	Doncaster, United KingdomHQ checked Sep 17, 2026	51-200	86 contacts →
	Partial evidence “PJD Mechanical Engineering Ltd Ltd has worked with a number of leading clients, operators and technology companies throughout the UK energy sector for over 30 years.” Source: RevenueBase Database · checked Sep 17, 2026
6	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
7	NES	Partial evidence	Inverness, United KingdomHQ checked Sep 17, 2026	11-50	51 contacts →
	Partial evidence “NES is an Industrial and Commercial Electrical Engineering and Contracting business, based in the North and North East of Scotland.” Source: RevenueBase Database · checked Sep 17, 2026
8	JGC Engineering And Technical Services LTD	Partial evidence	Thurso, United KingdomHQ checked Sep 17, 2026	51-200	42 contacts →
	Partial 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
9	Field Systems Designs LTD	Strong evidence	Dorking, United KingdomHQ checked Sep 17, 2026	51-200	40 contacts →
	Strong evidence “Field Systems Designs is a specialist Electrical and Mechanical engineering contractor, operating primarily in the water, power, energy from waste & private industry sectors.” Source: RevenueBase Database · checked Sep 17, 2026
10	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
11	Lagan Energy Engineering LTD	Partial evidence	Omagh, United KingdomHQ checked Sep 17, 2026	51-200	36 contacts →
	Partial evidence “Lagan Energy Engineering Ltd provides quality assured electrical engineering, contracting and consultancy services to customers on various continents.” Source: RevenueBase Database · checked Sep 17, 2026
12	Luton Engineering Services	Partial evidence	Manchester, United KingdomHQ checked Sep 17, 2026	11-50	34 contacts →
	Partial 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
13	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
14	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
15	Target Site Services LTD	Partial evidence	Datchet, United KingdomHQ checked Sep 17, 2026	51-200	30 contacts →
	Partial 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
16	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
17	Power System Services LTD	Strong evidence	Chesterfield, United KingdomHQ checked Sep 17, 2026	51-200	24 contacts →
	Strong 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
18	Switchon Power	Strong evidence	Stourbridge, United KingdomHQ checked Sep 17, 2026	11-50	20 contacts →
	Strong evidence “SwitchOn Power is a specialized engineering company, focusing on renewable energy generation projects.” Source: RevenueBase Database · checked Sep 17, 2026
19	GTR Transmission & Protection Solutions LTD	Strong evidence	Poole, United KingdomHQ checked Sep 17, 2026	11-50	17 contacts →
	Strong evidence “GTR Transmission & Protection Solutions Ltd is a registered engineering company and supplier of high voltage Commissioning Engineers for power stations & substations.” Source: RevenueBase Database · checked Sep 17, 2026
20	Ingenious Power Engineering	Indirect evidence	Reading, United KingdomHQ checked Sep 17, 2026	11-50	16 contacts →
	Indirect evidence “From a small single electrical connection to a new substation, we take full responsibility for ensuring your new connection gets done!” Source: RevenueBase Database · checked Sep 17, 2026
21	HV Energy Solutions LTD	Partial evidence	Norwich, United KingdomHQ checked Sep 17, 2026	11-50	13 contacts →
	Partial evidence “Our distinct expertise lies in designing, engineering, maintaining, installing, testing and commissioning high-voltage substations, electrical transmission and distribution…” Source: RevenueBase Database · checked Sep 17, 2026
22	MIMAH	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	11-50	12 contacts →
	Partial evidence “We provide a comprehensive range of products and services, in the fields of: renewable energy, power generation equipment, sugar industries, training, instrumentation tools, and…” Source: RevenueBase Database · checked Sep 17, 2026
23	Gew2 LTD	Indirect evidence	Mansfield, United KingdomHQ checked Sep 17, 2026	1-10	11 contacts →
	Indirect evidence “We are an EPC and ICP who can assist your development with the new gas, electricity and water connection.” Source: RevenueBase Database · checked Sep 17, 2026
24	Power Engineering Consultants PLC	Strong evidence	Alderley Edge, United KingdomHQ checked Sep 17, 2026	11-50	11 contacts →
	Strong evidence “Power Engineering Consultants is a consultant and contractor in all aspects of electrical power systems and it works for clients both large and small.” Source: RevenueBase Database · checked Sep 17, 2026
25	IME Group	Partial evidence	Brentwood, United KingdomHQ checked Sep 17, 2026	11-50	9 contacts →
	Partial evidence “When something goes wrong on plant you need one call, one team and one answer.” 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 engineering 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 engineering contractors.
Partial evidence: Its own public description names part of power plant engineering 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 engineering 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 158 power plant engineering contractors based in the United Kingdom

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

As of Sep 17, 2026

17.9%Verified-email coverage

21.3Average contacts per company

1-10Median size (employees)

11.4%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 158 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 engineering 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 engineering 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 engineering 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 engineering 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, 600 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 engineering 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 engineering contractors are there based in the United Kingdom?

RevenueBase identified 158 power plant engineering 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?

NEXOS, headquartered in Aberdeen, tops this list with the largest team on record.

Which city has the most power plant engineering contractors?

London leads with 18 headquartered companies, followed by Manchester (6) and Birmingham (3).

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 600 verified decision-maker contacts tracked across these 158 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.