Company lists · Data refreshed September 2026

Top 25 Backup generator suppliers based in the United Kingdom

Name: Backup generator suppliers 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 145 companies tracked

RevenueBase identified 145 backup generator suppliers headquartered in the United Kingdom as of September 2026 and tracks 2,434 professional contacts across them, including 728 with verified work emails. London is the largest hub.

This list covers backup generator suppliers 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

145Companies

2,434Contacts tracked

728Verified emails

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The 25 largest backup generator suppliers based in the United Kingdom

Ranked by team size

Top 25 of 145 backup generator suppliers 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 backup generator suppliers: 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	FG Wilson	Strong evidence	Larne, United KingdomHQ checked Sep 19, 2026	1,001-5,000	468 contacts →
	Strong evidence “Founded in 1966, FG Wilson is a leading global supplier of diesel generator sets with a strong heritage of quality, support and value.” Source: RevenueBase Database · checked Sep 19, 2026
2	Dale Power Solutions	Indirect evidence	Scarborough, United KingdomHQ checked Sep 19, 2026	201-500	214 contacts →
	Indirect evidence “Founded in 1935 Dale Power Solutions Ltd have been providing reliable; secure power solutions for mission critical services & systems throughout the world.” Source: RevenueBase Database · checked Sep 19, 2026
3	Generator Power	Partial evidence	Normanton, United KingdomHQ checked Sep 19, 2026	201-500	169 contacts →
	Partial evidence “Generator Power are specialists in the provision of power via the hire and sale of diesel and LPG generators, bunded fuel tanks and other ancillary equipment.” Source: RevenueBase Database · checked Sep 19, 2026
4	Power Electrics	Indirect evidence	Warmley, United KingdomHQ checked Sep 19, 2026	201-500	161 contacts →
	Indirect evidence “We bring the energy!” Source: RevenueBase Database · checked Sep 19, 2026
5	Riello UPS LTD	Strong evidence	Wrexham, United KingdomHQ checked Sep 19, 2026	51-200	95 contacts →
	Strong evidence “Riello UPS Ltd is a leader in the manufacture of uninterruptible power supplies (UPS) from 400 VA to 6.4 MVA and standby generators from 8 kVA to 2.5 MVA.” Source: RevenueBase Database · checked Sep 19, 2026
6	Yorpower	Indirect evidence	Sherburn In Elmet, United KingdomHQ checked Sep 19, 2026	51-200	93 contacts →
	Indirect evidence “YorPower are multi award winning company with their head office based in the UK.” Source: RevenueBase Database · checked Sep 19, 2026
7	Shenton Group	Partial evidence	Andover, United KingdomHQ checked Sep 19, 2026	51-200	85 contacts →
	Partial evidence “The UK's leading Technical Experts in Standby Power, Uninterruptible Power Supplies and Combined Heat & Power Systems.” Source: RevenueBase Database · checked Sep 19, 2026
8	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
9	UPS Systems PLC	Strong evidence	Swindon, United KingdomHQ checked Sep 19, 2026	11-50	51 contacts →
	Strong evidence “UPS Systems PLC are the UK’s leading independent supplier of standby power and occupy a unique position in the provision of back-up power solutions to businesses of all sizes.” Source: RevenueBase Database · checked Sep 19, 2026
10	P&i Group	Partial evidence	Havant, United KingdomHQ checked Sep 19, 2026	11-50	31 contacts →
	Partial evidence “P&I Group (formerly P&I Generators) are trusted Critical Power Specialists, delivering generator and UPS solutions across the UK since As a family-run business, we pride ourselves…” Source: RevenueBase Database · checked Sep 19, 2026
11	Central Power Services	Partial evidence	Preston, United KingdomHQ checked Sep 19, 2026	11-50	30 contacts →
	Partial 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
12	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
13	Newburn Power Rental LTD	Indirect evidence	Pontefract, United KingdomHQ checked Sep 19, 2026	11-50	21 contacts →
	Indirect evidence “At Newburn Power, we specialise in providing temporary power and distribution solutions for projects of every scale – from major construction sites and utilities, to NHS…” Source: RevenueBase Database · checked Sep 19, 2026
14	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
15	GWF Generators	Partial evidence	Dundonald, United KingdomHQ checked Sep 19, 2026	11-50	19 contacts →
	Partial evidence “GWF Generators are a UK based Cummins Power Generation authorised dealer and offer a range of generators from 17kVA up to We provide a comprehensive package, tailored to meet your…” Source: RevenueBase Database · checked Sep 19, 2026
16	Stuart Energy Limited	Partial evidence	Skelmersdale, United KingdomHQ checked Sep 19, 2026	51-200	18 contacts →
	Partial evidence “Here at Stuart Energy, we Provide Generators for Hire and Sale from 10Kva to 1500Kva With over 550 Generators available for hire we have got your power needs covered!” Source: RevenueBase Database · checked Sep 19, 2026
17	Yellow Power LTD	Strong evidence	Stoke On Trent, United KingdomHQ checked Sep 19, 2026	11-50	17 contacts →
	Strong evidence “Yellow Power Ltd are designers, suppliers and installers of new and used diesel and gas powered generation systems, including provision of all ancillary equipment, commissioning…” Source: RevenueBase Database · checked Sep 19, 2026
18	Woodlands Power	Indirect evidence	Evesham, United KingdomHQ checked Sep 19, 2026	11-50	15 contacts →
	Indirect evidence “Established in 1950, Woodlands Power was one of the first providers of critical, standby & temporary power in the UK.” Source: RevenueBase Database · checked Sep 19, 2026
19	Specialist Power Systems Limited	Partial evidence	Kempston Hardwick, United KingdomHQ checked Sep 19, 2026	11-50	14 contacts →
	Partial evidence “At Specialist Power Systems it is our mission to be the leading independent supplier of secure power equipment and services in the UK.” Source: RevenueBase Database · checked Sep 19, 2026
20	Power Control & Automation Solutions LTD Pcas	Indirect evidence	Sheffield, United KingdomHQ checked Sep 19, 2026	11-50	14 contacts →
	Indirect evidence “Keeping Power in Your Hands ” At Power Control & Automation Solutions Ltd, we don’t just provide services-we deliver peace of mind.” Source: RevenueBase Database · checked Sep 19, 2026
21	Star Power Hire	Indirect evidence	Houghton Regis, United KingdomHQ checked Sep 19, 2026	11-50	13 contacts →
	Indirect evidence “Star Power provides temporary power solutions to a wide variety of industries.” Source: RevenueBase Database · checked Sep 19, 2026
22	Critical Power Supplies LTD	Partial evidence	Thame, United KingdomHQ checked Sep 19, 2026	11-50	13 contacts →
	Partial evidence “Critical Power Supplies is a leading independent UK multi-brand supplier of critical power and energy solutions including uninterruptible power supplies and standby power…” Source: RevenueBase Database · checked Sep 19, 2026
23	Constant Power Services Limited	Partial evidence	Letchworth Garden City, United KingdomHQ checked Sep 19, 2026	11-50	13 contacts →
	Partial evidence “Since the late 80’s Constant Power Services Ltd has excelled in providing support to businesses seeking quality uninterruptible power supplies, installation, and aftercare.” Source: RevenueBase Database · checked Sep 19, 2026
24	Tarplett Generator Services LTD	Partial evidence	Pershore, United KingdomHQ checked Sep 19, 2026	11-50	12 contacts →
	Partial evidence “The Generator Specialist, Tarplett Generator Services are your ‘one stop shop’ for diesel generator sales, service, hire and parts.” Source: RevenueBase Database · checked Sep 19, 2026
25	HGI Generators LTD	Partial evidence	Wirksworth, United KingdomHQ checked Sep 19, 2026	51-200	12 contacts →
	Partial evidence “If your requirement is to purchase or hire generators for prime power, standby or off grid applications using conventional fuels or green alternatives, HGI as a power equipment…” 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: backup generator suppliers. 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 backup generator suppliers.
Partial evidence: Its own public description names part of backup generator suppliers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name backup generator suppliers. 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 145 backup generator suppliers based in the United Kingdom

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Backup generator suppliers based in the United Kingdom at a glance

As of Sep 19, 2026

29.9%Verified-email coverage

16.8Average contacts per company

11-50Median size (employees)

2.8%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

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 145 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 backup generator suppliers, 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 “backup generator suppliers”. 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 backup generator suppliers), 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 backup generator suppliers, 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, 728 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 backup generator suppliers, 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 backup generator suppliers are there based in the United Kingdom?

RevenueBase identified 145 backup generator suppliers 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?

FG Wilson, headquartered in Larne, tops this list with the largest team on record.

Which city has the most backup generator suppliers?

London leads with 4 headquartered companies, followed by Manchester (4) 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 728 verified decision-maker contacts tracked across these 145 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.