Company lists · Data refreshed September 2026

Top 25 Energy maintenance service providers based in the United Kingdom

Name: Energy maintenance service providers based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 1,165 companies tracked

RevenueBase identified 1,165 energy maintenance service providers headquartered in the United Kingdom as of September 2026 and tracks 29,300 professional contacts across them, including 8,277 with verified work emails. London is the largest hub.

This list covers energy maintenance service providers 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 16, 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 16, 2026 86% judged on-target in blind review

1,165Companies

29,300Contacts tracked

8,277Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest energy maintenance service providers based in the United Kingdom

Ranked by team size

Top 25 of 1,165 energy maintenance service providers based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to energy maintenance service providers: 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	Enermech	Partial evidence	Aberdeen, United KingdomHQ checked Sep 16, 2026	1,001-5,000	2,640 contacts →
	Partial evidence “EnerMech delivers integrated specialist services that support critical assets across the energy and infrastructure sectors worldwide.” Source: RevenueBase Database · checked Sep 16, 2026
2	Bilfinger UK	Partial evidence	Warrington, United KingdomHQ checked Sep 16, 2026	1,001-5,000	2,052 contacts →
	Partial evidence “With a strong commitment to sustainability, Bilfinger UK stands out as a premier provider of engineering and maintenance services.” Source: RevenueBase Database · checked Sep 16, 2026
3	Dalkia UK	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	5,001-10,000	1,064 contacts →
	Partial evidence “Together, we’re delivering technical solutions for a better society and an Electric Britain Dalkia is one of the UK’s leading technical and energy services providers at the…” Source: RevenueBase Database · checked Sep 16, 2026
4	Freedom	Indirect evidence	Leeds, United KingdomHQ checked Sep 16, 2026	1,001-5,000	664 contacts →
	Indirect evidence “Freedom is a leading provider of facilities and power engineering services.” Source: RevenueBase Database · checked Sep 16, 2026
5	AXIS	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	501-1,000	643 contacts →
	Partial evidence “We partner with our clients to navigate the complexities of property maintenance, providing agile, responsive, and reliable solutions that empower you to focus on your core…” Source: RevenueBase Database · checked Sep 16, 2026
6	PX Group	Indirect evidence	Stockton On Tees, United KingdomHQ checked Sep 16, 2026	501-1,000	617 contacts →
	Indirect evidence “px Group is a fully integrated infrastructure solutions business which delivers net zero and stakeholder success through elite performance in the safety, availability, reliability…” Source: RevenueBase Database · checked Sep 16, 2026
7	Three60 Energy	Partial evidence	Aberdeen, United KingdomHQ checked Sep 16, 2026	501-1,000	497 contacts →
	Partial evidence “THREE60 Energy is a leading energy services group who are delivering innovative asset management, engineering technology and energy transition solutions across the complete…” Source: RevenueBase Database · checked Sep 16, 2026
8	NEXOS	Partial evidence	Aberdeen, United KingdomHQ checked Sep 16, 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 16, 2026
9	GEV Wind Power	Partial evidence	Hull, United KingdomHQ checked Sep 16, 2026	501-1,000	440 contacts →
	Partial evidence “GEV Wind Power is the global leading wind turbine maintenance & repair specialist.” Source: RevenueBase Database · checked Sep 16, 2026
10	Quartzelec Limited	Indirect evidence	Rugby, United KingdomHQ checked Sep 16, 2026	501-1,000	412 contacts →
	Indirect evidence “Quartzelec is a leading independent electrical engineering group delivering solutions and services in both UK and global markets.” Source: RevenueBase Database · checked Sep 16, 2026
11	Brush Group	Indirect evidence	Loughborough, United KingdomHQ checked Sep 16, 2026	501-1,000	367 contacts →
	Indirect evidence “We support the global drive to net zero with innovative, engineered solutions that address grid resilience and systems challenges, facilitate electrification of transport and…” Source: RevenueBase Database · checked Sep 16, 2026
12	Jaguar Building Services LTD	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	501-1,000	341 contacts →
	Partial evidence “Since 1988, Jaguar Building Services has been a trusted leader in the mechanical, electrical, and public health maintenance of some of London's most prestigious landmark buildings.” Source: RevenueBase Database · checked Sep 16, 2026
13	CLC	Partial evidence	Southampton, United KingdomHQ checked Sep 16, 2026	1,001-5,000	311 contacts →
	Partial evidence “Since 1969, CLC has built a reputation as one of the UK's leading property and asset maintenance companies.” Source: RevenueBase Database · checked Sep 16, 2026
14	Enterprise PLC	Indirect evidence	Leyland, United KingdomHQ checked Sep 16, 2026	10001+	306 contacts →
	Indirect evidence “Enterprise was acquired by Amey in 2013, please visit http://ow.ly/KxJYY to view all the latest news and job alerts from Amey.” Source: RevenueBase Database · checked Sep 16, 2026
15	Rainham Industrial Services LTD	Partial evidence	Essex, United KingdomHQ checked Sep 16, 2026	501-1,000	264 contacts →
	Partial evidence “Rainham provides specialist industrial services that support the installation, maintenance, refurbishment, decommissioning and replacement of large industrial plants and building…” Source: RevenueBase Database · checked Sep 16, 2026
16	Aurora Energy Services	Partial evidence	Inverness, United KingdomHQ checked Sep 16, 2026	201-500	253 contacts →
	Partial evidence “Aurora Energy Services is an international, multi-disciplinary company delivering integrated solutions across the full energy asset lifecycles.” Source: RevenueBase Database · checked Sep 16, 2026
17	Intec Energy Solutions	Partial evidence	London, United KingdomHQ checked Sep 16, 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 16, 2026
18	Seatrium Offshore Renewable Services LTD	Partial evidence	Lowestoft, United KingdomHQ checked Sep 16, 2026	n/a	155 contacts →
	Partial evidence “Seatrium Offshore Renewable Services Ltd (Seatrium ORS) has over 55 years of unparalleled expertise and experience in the offshore energy industry.” Source: RevenueBase Database · checked Sep 16, 2026
19	MCS	Indirect evidence	Bristol, United KingdomHQ checked Sep 16, 2026	51-200	138 contacts →
	Indirect evidence “MCS Ltd are specialist building services engineers covering all aspects of commercial and industrial building services and infrastructure engineering across varying market sectors.” Source: RevenueBase Database · checked Sep 16, 2026
20	Irwin M&e	Strong evidence	Portadown, United KingdomHQ checked Sep 16, 2026	201-500	134 contacts →
	Strong evidence “We provide a full range of Mechanical, Electrical, Energy and Renewables installation and maintenance services to clients, across both public and private sectors throughout the UK…” Source: RevenueBase Database · checked Sep 16, 2026
21	Interocean Marine Services	Indirect evidence	Portlethen, United KingdomHQ checked Sep 16, 2026	51-200	134 contacts →
	Indirect evidence “Interocean provide a comprehensive range of services to the offshore oil and gas, marine, and renewable sectors.” Source: RevenueBase Database · checked Sep 16, 2026
22	Smith & Byford	Indirect evidence	Cheam, United KingdomHQ checked Sep 16, 2026	201-500	132 contacts →
	Indirect evidence “Smith & Byford is a family-owned and operated building services company.” Source: RevenueBase Database · checked Sep 16, 2026
23	Sureserve Compliance Central	Indirect evidence	Unit 5-6 Boudicca Road, United KingdomHQ checked Sep 16, 2026	501-1,000	127 contacts →
	Indirect evidence “With over 40 years of successful delivery experience in the domestic and commercial markets you can trust Sureserve Compliance Central with all your heating needs.” Source: RevenueBase Database · checked Sep 16, 2026
24	Alderley	Partial evidence	Wotton-under-edge, United KingdomHQ checked Sep 16, 2026	201-500	123 contacts →
	Partial evidence “Alderley is the integrated solutions provider for the global energy industry.” Source: RevenueBase Database · checked Sep 16, 2026
25	Stothers M&e LTD	Partial evidence	Belfast, United KingdomHQ checked Sep 16, 2026	51-200	109 contacts →
	Partial evidence “Founded in 1957, Stothers (M&E) Ltd is a national market leader in the provision of Mechanical and Electrical Building Services and Contract Maintenance.” Source: RevenueBase Database · checked Sep 16, 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: energy maintenance service providers. 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 energy maintenance service providers.
Partial evidence: Its own public description names part of energy maintenance service providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy maintenance service providers. 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 1,165 energy maintenance service providers based in the United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 8,277 reachable decision-makers.

Free signup · no credit card

View the full list →

Energy maintenance service providers based in the United Kingdom at a glance

As of Sep 16, 2026

28.2%Verified-email coverage

25.2Average contacts per company

11-50Median size (employees)

6.1%Largest-city concentration · London

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

501

11-50

448

51-200

140

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 1,165 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 energy maintenance service providers, 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 “energy maintenance service providers”. 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 energy maintenance service providers), 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 energy maintenance service providers, 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, 8,277 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 16, 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.

Energy maintenance service providers by metro

Energy maintenance service providers in London71
Energy maintenance service providers in Manchester25

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 energy maintenance service providers, 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 energy maintenance service providers are there based in the United Kingdom?

RevenueBase identified 1,165 energy maintenance service providers 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?

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

Which city has the most energy maintenance service providers?

London leads with 71 headquartered companies, followed by Manchester (25) and Aberdeen (17).

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 8,277 verified decision-maker contacts tracked across these 1,165 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 16, 2026.

Ready to reach these companies? Verified emails and direct dials for all 1,165 energy maintenance service providers based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

Energy maintenance service providers by geography

Browse the directory

Browse: Companies home · All United Kingdom lists · All Energy maintenance service providers lists · New lists

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.