Company lists · Data refreshed September 2026

Top 25 Substation inspection solutions based in the United Kingdom

Name: Substation inspection solutions 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 82 companies tracked

RevenueBase identified 82 substation inspection solutions headquartered in the United Kingdom as of September 2026 and tracks 457 professional contacts across them, including 158 with verified work emails. London is the largest hub.

This list covers substation inspection solutions 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

82Companies

457Contacts tracked

158Verified emails

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The 25 largest substation inspection solutions based in the United Kingdom

Ranked by team size

Top 25 of 82 substation inspection solutions 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 substation inspection solutions: 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	Calbarrie Compliance Services LTD	Indirect evidence	Cheltenham, United KingdomHQ checked Sep 22, 2026	51-200	42 contacts →
	Indirect evidence “Calbarrie Compliance Services Ltd (Calbarrie) is the UK’s market leader in electrical compliance services and has been trading within the Health & Safety and Compliance sectors…” Source: RevenueBase Database · checked Sep 22, 2026
2	Intersafe Limited	Indirect evidence	Southampton, United KingdomHQ checked Sep 22, 2026	11-50	36 contacts →
	Indirect evidence “COMPANY OVERVIEW Based near Southampton, Intersafe are compliance specialists providing a range of electrical testing services for large, commercial sites.” Source: RevenueBase Database · checked Sep 22, 2026
3	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
4	Group Management Electrical Surveys Limited	Partial evidence	Halifax, United KingdomHQ checked Sep 22, 2026	11-50	32 contacts →
	Partial evidence “For the last 25 years, Group Management Electrical Surveys have been providing Electrical Inspection, Test and Documentation services to many of the UK's leading companies.” Source: RevenueBase Database · checked Sep 22, 2026
5	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
6	HK Engineering LTD	Partial evidence	Melksham, United KingdomHQ checked Sep 22, 2026	11-50	20 contacts →
	Partial 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
7	Winshall LTD	Partial evidence	Llantrisant, United KingdomHQ checked Sep 22, 2026	11-50	17 contacts →
	Partial evidence “Substation Project Support: Project & Site Management, Civils & M&E Installation Teams.” Source: RevenueBase Database · checked Sep 22, 2026
8	Redas Engineering & Construction	Partial evidence	Staffordshire, United KingdomHQ checked Sep 22, 2026	11-50	16 contacts →
	Partial evidence “REDAS Engineering & Construction is a team of experienced professionals with more than a decade experience in substation tendering, procurement, design, Installation, and…” Source: RevenueBase Database · checked Sep 22, 2026
9	Aylesford Electrical Contractors LTD	Indirect evidence	Maidstone, United KingdomHQ checked Sep 22, 2026	11-50	14 contacts →
	Indirect evidence “Aylesford Electrical is a specialist testing, maintenance and installation provider based in Kent.” Source: RevenueBase Database · checked Sep 22, 2026
10	HV Energy Solutions LTD	Partial evidence	Norwich, United KingdomHQ checked Sep 22, 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 22, 2026
11	MS Electrical Solutions	Partial evidence	Bilton, United KingdomHQ checked Sep 22, 2026	1-10	13 contacts →
	Partial evidence “Choose MS Electrical Solutions LTD for all your electrical install needs and benefit from a dependable service, expert support and quality workmanship, with projects delivered on…” Source: RevenueBase Database · checked Sep 22, 2026
12	MET Group Technical	Partial evidence	Manchester, United KingdomHQ checked Sep 22, 2026	51-200	11 contacts →
	Partial evidence “MET Group Technical provide a unique electrical energised inspection service to high & low voltage assets including your Power Distribution, Busbars, Submains & Fixed Wiring.” Source: RevenueBase Database · checked Sep 22, 2026
13	Icss LTD	Indirect evidence	Larne, United KingdomHQ checked Sep 22, 2026	11-50	10 contacts →
	Indirect evidence “Formed in 2012, Independent Company Safety Services (ICSS) Ltd specialise in Electrical Safety Compliance, and provides Portable Appliance Testing (PAT), Fixed Wire Testing…” Source: RevenueBase Database · checked Sep 22, 2026
14	Nationwide Compliance Solutions. Call ETM 01922 710014	Indirect evidence	Cannock, United KingdomHQ checked Sep 22, 2026	51-200	10 contacts →
	Indirect evidence “Electrical testing, installations, repairs & remedial works.” Source: RevenueBase Database · checked Sep 22, 2026
15	Qtech Control Limited	Partial evidence	Poole, United KingdomHQ checked Sep 22, 2026	1-10	7 contacts →
	Partial evidence “We are a UK based, ISO 9001:2015, ISO 14001:2015 and ISO 17020:2012 accredited inspection company, providing mechanical and electrical engineers for client representation, witness…” Source: RevenueBase Database · checked Sep 22, 2026
16	Power Sonic LTD	Indirect evidence	Driffield, United KingdomHQ checked Sep 22, 2026	1-10	5 contacts →
	Indirect evidence “Welcome to Power Sonic Ltd If you require help and assistance with your electrical safety then you have come to the right place!” Source: RevenueBase Database · checked Sep 22, 2026
17	Viewsafe	Indirect evidence	Manchester, United KingdomHQ checked Sep 22, 2026	11-50	4 contacts →
	Indirect evidence “Viewsafe is the safety assured maintenance aperture for electrical switchgear and has been designed to integrate the most important safety and functionality features required when…” Source: RevenueBase Database · checked Sep 22, 2026
18	GRW Group LTD	Indirect evidence	Wakefield, United KingdomHQ checked Sep 22, 2026	11-50	4 contacts →
	Indirect evidence “At GRW we inspect and test electrical installations in commercial, industrial, public and residential rental premises, ensuring their compliance with BS 7671, and with statutory…” Source: RevenueBase Database · checked Sep 22, 2026
19	Inspexx LTD	Partial evidence	Bradford, United KingdomHQ checked Sep 22, 2026	1-10	4 contacts →
	Partial evidence “Since 1998 Inspexx Ltd has been a trusted partner in electrical inspections.” Source: RevenueBase Database · checked Sep 22, 2026
20	TES Compliance LTD	Indirect evidence	Crawley, United KingdomHQ checked Sep 22, 2026	11-50	3 contacts →
	Indirect evidence “Established in 2016 and based in West Sussex.” Source: RevenueBase Database · checked Sep 22, 2026
21	Industrial Safety Inspections Limited	Partial evidence	Tamworth, United KingdomHQ checked Sep 22, 2026	51-200	3 contacts →
	Partial evidence “Industrial Safety Inspections is a leading independent engineering inspection organisation, helping commercial and industrial customers protect their staff, plant, assets, and…” Source: RevenueBase Database · checked Sep 22, 2026
22	Adlec Electrical Engineering & Marine Servicesltd	Partial evidence	Bootle, United KingdomHQ checked Sep 22, 2026	11-50	3 contacts →
	Partial evidence “industrial and commercial electrical installation,maintenance, inspection and testing” Source: RevenueBase Database · checked Sep 22, 2026
23	Orange Tree Electrical Services LTD	Partial evidence	Hemsworth, United KingdomHQ checked Sep 22, 2026	1-10	3 contacts →
	Partial evidence “Orange Tree Electrical are specialist providers of electrical inspection & testing services including fixed wiring testing, portable appliance testing, thermographic surveys and…” Source: RevenueBase Database · checked Sep 22, 2026
24	GEO Therm LTD	Partial evidence	Lowestoft, United KingdomHQ checked Sep 22, 2026	1-10	3 contacts →
	Partial evidence “Geo Therm Ltd provide non-invasive maritime and onshore Thermographic IRT Surveys, first pass High Voltage Partial Discharge (HVPD) inspections, hazardous area Ex Inspections, PAT…” Source: RevenueBase Database · checked Sep 22, 2026
25	E-Tcs	Partial evidence	Peterborough, United KingdomHQ checked Sep 22, 2026	11-50	2 contacts →
	Partial evidence “Electrical testing and compliance solutions.” 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: substation inspection solutions. 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 substation inspection solutions.
Partial evidence: Its own public description names part of substation inspection solutions, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name substation inspection solutions. 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 82 substation inspection solutions based in the United Kingdom

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Substation inspection solutions based in the United Kingdom at a glance

As of Sep 22, 2026

34.6%Verified-email coverage

5.6Average contacts per company

1-10Median size (employees)

4.9%Largest-city concentration · London

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

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 82 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 substation inspection solutions, 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 “substation inspection solutions”. 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 substation inspection solutions), 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 substation inspection solutions, 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, 158 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 substation inspection solutions, 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 substation inspection solutions are there based in the United Kingdom?

RevenueBase identified 82 substation inspection solutions 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?

Calbarrie Compliance Services LTD, headquartered in Cheltenham, tops this list with the largest team on record.

Which city has the most substation inspection solutions?

London leads with 4 headquartered companies, followed by Camberley (2) and Maidstone (2).

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 158 verified decision-maker contacts tracked across these 82 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.