Company lists · Data refreshed November 2026

Top 25 Electrical system integration consultants based in the United Kingdom

Name: Electrical system integration consultants based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 5,691 companies tracked

RevenueBase identified 5,691 company matches for electrical system integration consultants associated with the United Kingdom as of November 2026 and tracks 46,146 professional contacts across them, including 16,268 with verified work emails. London is the largest hub.

This list covers company matches for electrical system integration consultants associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built

5,691Companies

46,146Contacts tracked

16,268Verified emails

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The 25 largest electrical system integration consultants based in the United Kingdom

Ranked by team size

Top 25 of 5,691 company matches for electrical system integration consultants based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	MJ Quinn	Exact match	Prescot, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	1,373 contacts →
	Exact match “At MJ Quinn we believe in creating great connections, with our customers, our people and our world.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	J Brand LTD	Exact match	London, United KingdomHQ recorded Nov 6, 2026	n/a	1,265 contacts →
	Exact match “Originally set up in 1933 by Joseph Brand as an electrical contracting and repair business in Margaret Street W1, the company today still operates today with the same guiding…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Kelly Group	Exact match	Wembley, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	1,204 contacts →
	Exact match “Established in 1985 to support the emerging UK cable television market, Kelly Group has diversified to meet the needs of our clients.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Tclarke	Exact match	London, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	652 contacts →
	Exact match “TClarke is an industry leader in the design, installation, integration and maintenance of the digital, mechanical and electrical technologies and infrastructures that a 21st…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Imtech	Exact match	Staines-upon-thames, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	517 contacts →
	Exact match “Imtech has rebranded to Dalkia UK.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Quartzelec Limited	Exact match	Rugby, United KingdomHQ recorded Nov 6, 2026	501-1,000	456 contacts →
	Exact match “Quartzelec is a leading independent electrical engineering group delivering solutions and services in both UK and global markets.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	Trinity Fire & Security Systems	Exact match	Exeter, United KingdomHQ recorded Nov 6, 2026	501-1,000	389 contacts →
	Exact match “Trinity’s mission statement is simple - to provide high quality design, installation, commissioning and long term after care of Fire Detection, Fire Suppression, Life Safety and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Capula	Exact match	Stone, United KingdomHQ recorded Nov 6, 2026	201-500	374 contacts →
	Exact match “What we do \| With a focus on operational technology and digital transformation, Capula has been a leader in advanced system integration for decades; optimising efficiency &…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	SPL Powerlines Uk&i	Exact match	Coatbridge, United KingdomHQ recorded Nov 6, 2026	501-1,000	337 contacts →
	Exact match “SPL Powerlines UK & I is a leading multi-disciplinary infrastructure specialist, offering end-to-end delivery across both rail and energy sectors with capabilities that set us…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	ITI Group	Exact match	Sheffield, United KingdomHQ recorded Nov 6, 2026	201-500	262 contacts →
	Exact match “For organisations facing the compounding threats of ageing assets, a retiring workforce, and evolving cyber attacks, the status quo is no longer an option.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Sudlows	Exact match	Manchester, United KingdomHQ recorded Nov 6, 2026	201-500	252 contacts →
	Exact match “Sudlows is a multi-award winning Critical Infrastructures, Enterprise Services and Facilities Management specialist which provides a full range of technical services for…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	BMSI	Exact match	Maidenhead, United KingdomHQ recorded Nov 6, 2026	201-500	236 contacts →
	Exact match “BMSI is the UK’s largest & leading Independent systems integrator of Building Energy Management Systems (BEMS).” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Brush Group	Exact match	Loughborough, United KingdomHQ recorded Nov 6, 2026	501-1,000	229 contacts →
	Exact match “We support the global drive to net zero with innovative, engineered solutions that address grid resilience and systems challenges, facilitate electrification of transport and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Actemium UK	Exact match	Birmingham, United KingdomHQ recorded Nov 6, 2026	501-1,000	226 contacts →
	Exact match “At Actemium UK, we are expert electrical, automation and mechanical engineers delivering bespoke engineering solutions across industry, infrastructure and beyond.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Scci Alphatrack	Exact match	Harlow, United KingdomHQ recorded Nov 6, 2026	201-500	223 contacts →
	Exact match “Part of the SCCI Group, SCCI Alphatrack designs, installs, and maintains connected building systems across social housing, commercial property, new builds, and public sector…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Openview Security Solutions Limited	Exact match	Romford, United KingdomHQ recorded Nov 6, 2026	201-500	203 contacts →
	Exact match “OpenView Security Solutions is the UK’S largest privately owned independent security company and provides unique, innovative and technologically excellent solutions to meet…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Gough & Kelly	Exact match	Leeds, United KingdomHQ recorded Nov 6, 2026	51-200	184 contacts →
	Exact match “A premier provider of security products and services across England, Gough & Kelly was formed in 1988 to influence and inspire the security and electrical marketplace by providing…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	DOWDS	Exact match	Ballymena, United KingdomHQ recorded Nov 6, 2026	201-500	177 contacts →
	Exact match “With 45+ years in business, Dowds expertise spans the full lifecycle of complex build environments – from initial design and systems integration to final handover and beyond.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Charterhouse Group	Exact match	Aldgate, United KingdomHQ recorded Nov 6, 2026	51-200	174 contacts →
	Exact match “Connecting You Across the UK and Worldwide Our team of accredited engineers and consultants cover a broad range of technologies, enabling us to deliver innovative solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Drive System Design	Exact match	Leamington Spa (uk), United KingdomHQ recorded Nov 6, 2026	51-200	169 contacts →
	Exact match “Drive System Design (DSD), a Hinduja Tech company, are internationally recognised experts in the rapid development of next-generation electric and hybrid powertrains, internal…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	MCS	Exact match	Bristol, United KingdomHQ recorded Nov 6, 2026	51-200	152 contacts →
	Exact match “MCS Ltd are specialist building services engineers covering all aspects of commercial and industrial building services and infrastructure engineering across varying market sectors.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Z-Tech Control Systems LTD	Exact match	Swavesey, United KingdomHQ recorded Nov 6, 2026	201-500	144 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	DPS Group	Exact match	Glenrothes, United KingdomHQ recorded Nov 6, 2026	51-200	142 contacts →
	Exact match “Shaping the future, together.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Cema LTD	Exact match	Nottingham, United KingdomHQ recorded Nov 6, 2026	201-500	136 contacts →
	Exact match “CEMA was founded in 1987 in Nottingham, and has quickly grown to become one of the leading electrical engineering companies in the United Kingdom, specialising in understanding…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Powersystems	Exact match	Bristol, United KingdomHQ recorded Nov 6, 2026	51-200	129 contacts →
	Exact match “Powered by People.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “electrical system integration consultants”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 5,691 electrical system integration consultants based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 16,268 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Electrical system integration consultants based in the United Kingdom at a glance

As of Nov 6, 2026

35.3%Verified-email coverage

8.1Average contacts per company

1-10Median size (employees)

7.9%Largest-city concentration · London

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

3,271

11-50

1,747

51-200

330

201-500

501-1,000

1,001-5,000

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 5,691 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with the United Kingdom whose business descriptions match “electrical system integration consultants” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 16,268 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Electrical system integration consultants by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “electrical system integration consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many electrical system integration consultants are there based in the United Kingdom?

RevenueBase identified 5,691 company matches for electrical system integration consultants associated with the United Kingdom as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

MJ Quinn tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most electrical system integration consultants?

London leads with 452 company records, followed by Manchester (96) and Birmingham (68).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 16,268 professional contacts with verified work emails tracked across these 5,691 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 SmartSearch, 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.