Company lists · Data refreshed September 2026

Top 25 Generator maintenance services based in the United Kingdom

Name: Generator maintenance services based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 100 companies tracked

RevenueBase identified 100 generator maintenance services headquartered in the United Kingdom as of September 2026 and tracks 1,495 professional contacts across them, including 729 with verified work emails. Sheffield is the largest hub.

This list covers generator maintenance services 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 19, 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 19, 2026 86% judged on-target in blind review

100Companies

1,495Contacts tracked

729Verified emails

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The 25 largest generator maintenance services based in the United Kingdom

Ranked by team size

Top 25 of 100 generator maintenance services based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to generator maintenance services: 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	Quartzelec Limited	Indirect evidence	Rugby, United KingdomHQ checked Sep 19, 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 19, 2026
2	RWG Repair & Overhauls	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 19, 2026	201-500	316 contacts →
	Indirect evidence “RWG (Repair & Overhauls) Limited is a Siemens Energy business.” Source: RevenueBase Database · checked Sep 19, 2026
3	Fletcher Moorland	Indirect evidence	Stoke On Trent, United KingdomHQ checked Sep 19, 2026	51-200	75 contacts →
	Indirect evidence “Fletcher Moorland Ltd, are the experts in repairing, replacing, or upgrading Electric Motors, Pumps, Air Handling Units, Inverter Drives, Servo Motors, HMIs, PCBs, PSUs and more.” Source: RevenueBase Database · checked Sep 19, 2026
4	Mems Power Generation	Partial evidence	Gillingham, United KingdomHQ checked Sep 19, 2026	51-200	56 contacts →
	Partial evidence “MEMS Power Generation is the UK leader in generator hire, approaching our 50th year of delivering temporary power solutions that businesses can depend on.” Source: RevenueBase Database · checked Sep 19, 2026
5	Central Power Services	Strong evidence	Preston, United KingdomHQ checked Sep 19, 2026	11-50	30 contacts →
	Strong evidence “Central Power Services is one of the UK’s most trusted independent power specialists, delivering 24/7 generator hire, sales, and maintenance solutions nationwide.” Source: RevenueBase Database · checked Sep 19, 2026
6	Pleavin Power	Indirect evidence	Wirral, United KingdomHQ checked Sep 19, 2026	11-50	25 contacts →
	Indirect evidence “Delivering on our promise to be a reliable, effective and powerful solution for your business.” Source: RevenueBase Database · checked Sep 19, 2026
7	Applied Power Engineering LTD	Partial evidence	Rotherham, United KingdomHQ checked Sep 19, 2026	11-50	21 contacts →
	Partial evidence “At Applied Power Engineering, we specialise in generator commissioning, optioneering, and generator installation, ensuring reliable power solutions tailored to your needs.” Source: RevenueBase Database · checked Sep 19, 2026
8	Pharos Generator Services Limited	Partial evidence	Runcorn, United KingdomHQ checked Sep 19, 2026	11-50	20 contacts →
	Partial evidence “Pharos Generator Services with over 60 years’ experience in the power generation industry, specialise in the supply, installation, commissioning, repair and servicing of diesel…” Source: RevenueBase Database · checked Sep 19, 2026
9	HK Engineering LTD	Indirect evidence	Melksham, United KingdomHQ checked Sep 19, 2026	11-50	20 contacts →
	Indirect evidence “HK Engineering Ltd is a leading engineering company specialising in electrical and gas testing and innovative solutions, with a solid commitment to excellence.” Source: RevenueBase Database · checked Sep 19, 2026
10	AJ Electrical Services	Partial evidence	Fareham, United KingdomHQ checked Sep 19, 2026	11-50	13 contacts →
	Partial evidence “AJ Electrical Services are renowned for quality and reliable electrical installations and maintenance within the commercial, industrial and rail industry.” Source: RevenueBase Database · checked Sep 19, 2026
11	ONE WAY Group	Indirect evidence	Staffordshire, United KingdomHQ checked Sep 19, 2026	11-50	13 contacts →
	Indirect evidence “Specialising in recycling centres, distribution centres, manufacturing, and other industrial facilities.” Source: RevenueBase Database · checked Sep 19, 2026
12	Allcool London	Partial evidence	Barking, United KingdomHQ checked Sep 19, 2026	1-10	11 contacts →
	Partial evidence “Allcool for all your Heating and Cooling Solutions An established company with over 100 years combined experience and knowledge in the generator and heat exchange industry Allcool…” Source: RevenueBase Database · checked Sep 19, 2026
13	ROLLO	Partial evidence	Bristol, United KingdomHQ checked Sep 19, 2026	11-50	10 contacts →
	Partial evidence “Operating since 1933, Rollo has a long, established and successful heritage in the power generation and plant industries.” Source: RevenueBase Database · checked Sep 19, 2026
14	RE Field Services LTD	Indirect evidence	Sheffield, United KingdomHQ checked Sep 19, 2026	11-50	7 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
15	Bravo Power LTD	Strong evidence	Preston, United KingdomHQ checked Sep 19, 2026	1-10	7 contacts →
	Strong evidence “BRAVO POWER LTD specialise in the maintenance and repair of reciprocating gas and diesel generators within the power generation industry.” Source: RevenueBase Database · checked Sep 19, 2026
16	A & M Generators Limited	Partial evidence	Kidwelly, United KingdomHQ checked Sep 19, 2026	11-50	7 contacts →
	Partial evidence “Specialist power generation sales & service company; ISO9001 & 14001 accredited with CHAS & SafeContractor registration.” Source: RevenueBase Database · checked Sep 19, 2026
17	DQM LTD	Partial evidence	Fareham, United KingdomHQ checked Sep 19, 2026	1-10	7 contacts →
	Partial evidence “Established in 1993, DQM LTD is a family-run business providing trusted generator and critical power solutions across the South of England.” Source: RevenueBase Database · checked Sep 19, 2026
18	Team ONE Group LTD	Indirect evidence	Southampton, United KingdomHQ checked Sep 19, 2026	11-50	7 contacts →
	Indirect evidence “Team One Group Ltd is your trusted partner for critical services and supply support for diesel and gas-powered products.” Source: RevenueBase Database · checked Sep 19, 2026
19	Enrogen LTD	Partial evidence	Pocklington, United KingdomHQ checked Sep 19, 2026	11-50	7 contacts →
	Partial evidence “At Enrogen, we specialise in providing comprehensive start-to-end services for power generation equipment on a global scale, with our headquarters based in the UK.” Source: RevenueBase Database · checked Sep 19, 2026
20	Generator Installations	Partial evidence	Gillingham, United KingdomHQ checked Sep 19, 2026	11-50	7 contacts →
	Partial evidence “Welcome to Generator Installations.” Source: RevenueBase Database · checked Sep 19, 2026
21	Regency Power Generation	Strong evidence	Spalding, United KingdomHQ checked Sep 19, 2026	11-50	5 contacts →
	Strong evidence “Regency Power Generation is a UK-based leader in standby power solutions, specialising in the design, installation, and maintenance of diesel generator systems for both small…” Source: RevenueBase Database · checked Sep 19, 2026
22	Solent Power	Indirect evidence	Southampton, United KingdomHQ checked Sep 19, 2026	1-10	5 contacts →
	Indirect evidence “Solent Power LTD provide emergency power services to the commercial and industrial sector.” Source: RevenueBase Database · checked Sep 19, 2026
23	Bellwood Rewinds Limited	Partial evidence	Hartlepool, United KingdomHQ checked Sep 19, 2026	1-10	4 contacts →
	Partial evidence “Bellwood Rewinds is a leading UK supplier of power generation and electric motor solutions, operating from our main facility in Melsonby, North Yorkshire.” Source: RevenueBase Database · checked Sep 19, 2026
24	Houghton International	Indirect evidence	Newcastle Upon Tyne, United KingdomHQ checked Sep 19, 2026	51-200	4 contacts →
	Indirect evidence “Houghton International improves the performance of electro mechanical assets around the world.” Source: RevenueBase Database · checked Sep 19, 2026
25	FW Power	Partial evidence	Cheshire, United KingdomHQ checked Sep 19, 2026	1-10	4 contacts →
	Partial evidence “FW Power are a specialist Generator company and will take care of every aspect of your Diesel Generator process from selection, delivery, installation, commissioning and warranty.” Source: RevenueBase Database · checked Sep 19, 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: generator maintenance services. 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 generator maintenance services.
Partial evidence: Its own public description names part of generator maintenance services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name generator maintenance services. 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 100 generator maintenance services based in the United Kingdom

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Generator maintenance services based in the United Kingdom at a glance

As of Sep 19, 2026

48.8%Verified-email coverage

14.9Average contacts per company

1-10Median size (employees)

4.0%Largest-city concentration · Sheffield

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 100 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 generator maintenance services, 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 “generator maintenance services”. 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 generator maintenance services), 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 generator maintenance services, 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, 729 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 19, 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 generator maintenance services, 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 generator maintenance services are there based in the United Kingdom?

RevenueBase identified 100 generator maintenance services 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?

Quartzelec Limited, headquartered in Rugby, tops this list with the largest team on record.

Which city has the most generator maintenance services?

Sheffield leads with 4 headquartered companies, followed by Aberdeen (3) and Crewe (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 729 verified decision-maker contacts tracked across these 100 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 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 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.