Company lists · Data refreshed September 2026

Top 25 Switchgear maintenance services based in the United Kingdom

Name: Switchgear 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 22, 2026 383 companies tracked

RevenueBase identified 383 switchgear maintenance services headquartered in the United Kingdom as of September 2026 and tracks 4,453 professional contacts across them, including 1,150 with verified work emails. London is the largest hub.

This list covers switchgear 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 22, 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 22, 2026 86% judged on-target in blind review

383Companies

4,453Contacts tracked

1,150Verified emails

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The 25 largest switchgear maintenance services based in the United Kingdom

Ranked by team size

Top 25 of 383 switchgear maintenance services based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to switchgear 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 22, 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 22, 2026
2	AF Switchgear	Partial evidence	Sutton-in-ashfield, United KingdomHQ checked Sep 22, 2026	201-500	117 contacts →
	Partial evidence “AF Switchgear is one of the UK's largest switchgear manufacturers and set the standard for LV Switchgear and Power Distribution.” Source: RevenueBase Database · checked Sep 22, 2026
3	Fletcher Moorland	Indirect evidence	Stoke On Trent, United KingdomHQ checked Sep 22, 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 22, 2026
4	MKE Engineering Group	Indirect evidence	Sittingbourne, United KingdomHQ checked Sep 22, 2026	51-200	63 contacts →
	Indirect evidence “MKE Engineering (Mid Kent Electrical) is the largest independent engineering service provider of its kind in the South East, operating from 3 different sites covering Kent…” Source: RevenueBase Database · checked Sep 22, 2026
5	The Wiggett Group LTD	Indirect evidence	Brentwood, United KingdomHQ checked Sep 22, 2026	201-500	51 contacts →
	Indirect evidence “Wiggett Electrical has gone from strength to strength.” Source: RevenueBase Database · checked Sep 22, 2026
6	Hawker Siddeley Switchgear LTD	Partial evidence	Blackwood, United KingdomHQ checked Sep 22, 2026	201-500	46 contacts →
	Partial evidence “Hawker Siddeley Switchgear Ltd is a major national and international manufacturer of a range of indoor and outdoor medium voltage distribution and transit switchgear.” Source: RevenueBase Database · checked Sep 22, 2026
7	Slaters Electricals	Indirect evidence	Tollbridge Road, United KingdomHQ checked Sep 22, 2026	51-200	42 contacts →
	Indirect evidence “Established for over 100 years, Slaters Electricals Ltd are experts in LV and HV power distribution equipment, installation and support solutions.” Source: RevenueBase Database · checked Sep 22, 2026
8	Morris Line Engineering LTD	Indirect evidence	Bridgend Industrial Estate, United KingdomHQ checked Sep 22, 2026	51-200	40 contacts →
	Indirect evidence “MLE was established in 1976 to provide specialist design & manufacturing services for 12kV – 145kV overhead line disconnectors & switches.” Source: RevenueBase Database · checked Sep 22, 2026
9	Lewden	Indirect evidence	Braintree, United KingdomHQ checked Sep 22, 2026	51-200	38 contacts →
	Indirect evidence “Lewden, a subsidiary of Palazzoli S.p.A, offers electrical power distribution solutions for industrial, construction, commercial, domestic and event sectors.” Source: RevenueBase Database · checked Sep 22, 2026
10	EMI Co. LTD	Indirect evidence	Gainsborough, United KingdomHQ checked Sep 22, 2026	51-200	37 contacts →
	Indirect evidence “Keeping power, water, and rail moving since 1966.” Source: RevenueBase Database · checked Sep 22, 2026
11	Substation Engineering Services LTD	Partial evidence	Stafford, United KingdomHQ checked Sep 22, 2026	11-50	36 contacts →
	Partial evidence “Specialising in High Voltage Substation Installation & Commissioning, Site & Project Management, Refurbishment, Maintenance, SES Ltd has established a solid reputation for…” Source: RevenueBase Database · checked Sep 22, 2026
12	Armah Switchgear LTD	Partial evidence	Washington, United KingdomHQ checked Sep 22, 2026	51-200	33 contacts →
	Partial evidence “Established in 1991, Armah Switchgear has matured into one of the most well-known switchgear specialists in the UK.” Source: RevenueBase Database · checked Sep 22, 2026
13	CF Roberts Mechanical & Electrical Contractors	Partial evidence	Cheltenham, United KingdomHQ checked Sep 22, 2026	51-200	31 contacts →
	Partial evidence “CF Roberts is one of the UK’s leading providers of electrical and mechanical design, installation and maintenance services.” Source: RevenueBase Database · checked Sep 22, 2026
14	Industrial Switchgear Services LTD	Indirect evidence	Hyde, United KingdomHQ checked Sep 22, 2026	51-200	30 contacts →
	Indirect evidence “ISS Ltd are a HV/LV Power Engineering company operating nationwide, undertaking Turnkey Electrical Distribution Projects and Site Service activities, including installation…” Source: RevenueBase Database · checked Sep 22, 2026
15	Rosh Engineering LTD	Indirect evidence	Blaydon On Tyne, United KingdomHQ checked Sep 22, 2026	11-50	28 contacts →
	Indirect evidence “Power transformer repair, refurbishment, supply & installation and enhancement throughout the UK and northern Europe.” Source: RevenueBase Database · checked Sep 22, 2026
16	RSE Control Systems TCS	Partial evidence	Morley, United KingdomHQ checked Sep 22, 2026	51-200	27 contacts →
	Partial evidence “With our extensive range of switchgear and control products, RSE Control Systems (TCS) can meet the complex and varying needs of customers.” Source: RevenueBase Database · checked Sep 22, 2026
17	LM Services NI LTD	Indirect evidence	Belfast, United KingdomHQ checked Sep 22, 2026	51-200	27 contacts →
	Indirect evidence “LM Services (NI) Ltd formerly known as LM Electric is an electrical and mechanical engineering company dedicated to developing solutions through the application of innovative…” Source: RevenueBase Database · checked Sep 22, 2026
18	Lucy Switchgear	Partial evidence	Thame, United KingdomHQ checked Sep 22, 2026	11-50	24 contacts →
	Partial evidence “Best-in-class products from Lucy Electric - experts in secondary power distriution specialising in high performance medium and low voltage switchgear for utility, industrial and…” Source: RevenueBase Database · checked Sep 22, 2026
19	RED Electric Designs LTD	Partial evidence	Loughton, United KingdomHQ checked Sep 22, 2026	51-200	23 contacts →
	Partial evidence “The Red Group has been providing electrical and mechanical design, installation and maintenance services to clients across the industrial, commercial, retail and entertainment…” Source: RevenueBase Database · checked Sep 22, 2026
20	Northern Drives And Controls LTD	Indirect evidence	Manchester, United KingdomHQ checked Sep 22, 2026	51-200	23 contacts →
	Indirect evidence “NDC offer expert repairs of all industrial electronic equipment types from thousands of manufacturers.” Source: RevenueBase Database · checked Sep 22, 2026
21	Novus Compliance Services Limited	Partial evidence	Bishop Stortford, United KingdomHQ checked Sep 22, 2026	51-200	21 contacts →
	Partial evidence “At Novus Compliance Services Ltd we specialise in Electrical Testing and Inspection, Maintenance, Installation design, Energy Management and refurbishment for a wide range of…” Source: RevenueBase Database · checked Sep 22, 2026
22	SIM Switchgear	Partial evidence	Merseyside, United KingdomHQ checked Sep 22, 2026	11-50	21 contacts →
	Partial evidence “SIM Switchgear is a specialist electrical engineering company, supplying national and international services to clients from our locations in Manchester and Liverpool, and…” Source: RevenueBase Database · checked Sep 22, 2026
23	Applied Power Engineering LTD	Indirect evidence	Rotherham, United KingdomHQ checked Sep 22, 2026	11-50	21 contacts →
	Indirect 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 22, 2026
24	Pharos Generator Services Limited	Indirect evidence	Runcorn, United KingdomHQ checked Sep 22, 2026	11-50	20 contacts →
	Indirect 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 22, 2026
25	HK Engineering LTD	Indirect evidence	Melksham, United KingdomHQ checked Sep 22, 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 22, 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: switchgear 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 switchgear maintenance services.
Partial evidence: Its own public description names part of switchgear maintenance services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name switchgear 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 383 switchgear maintenance services based in the United Kingdom

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Switchgear maintenance services based in the United Kingdom at a glance

As of Sep 22, 2026

25.8%Verified-email coverage

11.6Average contacts per company

1-10Median size (employees)

5.2%Largest-city concentration · London

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

224

11-50

117

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 383 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 switchgear 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 “switchgear 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 switchgear 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 switchgear 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, 1,150 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 22, 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 switchgear 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 switchgear maintenance services are there based in the United Kingdom?

RevenueBase identified 383 switchgear 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 switchgear maintenance services?

London leads with 20 headquartered companies, followed by Manchester (11) and Birmingham (6).

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 1,150 verified decision-maker contacts tracked across these 383 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 22, 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.