Company lists · Data refreshed September 2026

Top 25 Energy management system contractors based in London, United Kingdom

RevenueBase identified 140 company matches for energy management system contractors associated with London, United Kingdom as of September 2026 and tracks 2,387 professional contacts across them, including 1,233 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers company matches for energy management system contractors associated with London, 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 September 16, 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 Sep 16, 2026 How this list was built
140Companies
2,387Contacts tracked
1,233Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest energy management system contractors based in London, United Kingdom

Ranked by team size
Top 25 of 140 company matches for energy management system contractors based in London, United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 16, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Sep 16, 20265,001-10,0001,064 contacts →

Exact match

“Together, we’re delivering technical solutions for a better society and an Electric Britain Dalkia is one of the UK’s leading technical and energy services providers at the…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Sep 16, 202651-20097 contacts →

Exact match

“Best.Energy is a UK based company specialising in the measurement, control and reduction of energy consumption and costs within the industrial, commercial and public sectors.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Sep 16, 2026201-50085 contacts →

Exact match

“Who are we?”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Sep 16, 202611-5082 contacts →

Exact match

“AMD Environmental are a collaborative Mechanical and Electrical Design and Build Engineering specialist with a sustainable approach in delivering challenging and bespoke projects…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
5Exact matchLondon, United KingdomHQ recorded Sep 16, 202651-20074 contacts →

Exact match

“3MSe Ltd are an experienced provider of turnkey Building Management Systems.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Sep 16, 202651-20059 contacts →

Exact match

“GEM Environmental Building Services LTD was founded 20 years ago originally based in East London.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Sep 16, 202611-5037 contacts →

Exact match

“About Us: Established in 2023, Redworx MEP Limited is a dynamic Mechanical and Electrical contractor aiming to make a significant impact in the London market.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Sep 16, 202611-5035 contacts →

Exact match

“Here at ECS Systems we pride ourselves on providing the highest level of personalised service, to every client.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Sep 16, 202611-5032 contacts →

Exact match

“Master Systems Integrator OKTO Technologies is a leader in the design, development & installation of Smart Building Technology for- SuperPrime Residential - Luxury Hospitality -…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
10Exact matchLondon, United KingdomHQ recorded Sep 16, 202651-20027 contacts →

Exact match

“All BMS Systems offer a comprehensive service covering consultancy, design, project management, engineering, installation and all essential support services.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Sep 16, 202611-5022 contacts →

Exact match

“Niblock Electrical Services are a M&E contractor based in South East London.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
12Exact matchLondon, United KingdomHQ recorded Sep 16, 202611-5020 contacts →

Exact match

“QQ design, supply and install of residental and commercial automation technology and energy-efficient control systems.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Sep 16, 202611-5017 contacts →

Exact match

“We provide energy consultancy, data management, energy demand management and general forecasting systems for the power, gas and renewable sectors.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Sep 16, 20261-1017 contacts →

Exact match

“Established in 2004, Siemsatec Ltd are an independent building management systems (BMS) and energy management specialists.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Sep 16, 202611-5014 contacts →

Exact match

“Founded in 2002, Accurro was originally set up to be a commercial building management systems controls company.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
16Exact matchLondon, United KingdomHQ recorded Sep 16, 202611-5012 contacts →

Exact match

“We design mechanical and electrical systems, advise on all aspects of energy, carbon reduction and building physics.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Sep 16, 202611-5011 contacts →

Exact match

“Automatry combines building controls engineering with software development for the built environment.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Sep 16, 202611-5010 contacts →

Exact match

“Unlock the Full Potential of Your Building with MSI Works!”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
19Exact matchLondon, United KingdomHQ recorded Sep 16, 202611-5010 contacts →

Exact match

“We offer a world leading Energy and Engineering support to our clients.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
20Exact matchLondon, United KingdomHQ recorded Sep 16, 202611-5010 contacts →

Exact match

“Advanced Integration (AI) is a smart home automation and building management systems (BMS) specialist with more than 30 years of experience in the industry.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
21Exact matchLondon, United KingdomHQ recorded Sep 16, 202611-509 contacts →

Exact match

“Intrelec are NICEIC Approved Mechanical & Electrical Contractors in London providing M&E design, installation and maintenance services to commercial, industrial and residential…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Sep 16, 20261-109 contacts →

Exact match

“JSJ Smart Homes was formed as a specialised contractor in the field of domestic installations, covering all aspects of electrical installs, such as home automation and data…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
23Exact matchLondon, United KingdomHQ recorded Sep 16, 202611-508 contacts →

Exact match

“Tyford is an M&E contractor with over 20 years experience.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
24Exact matchLondon, United KingdomHQ recorded Sep 16, 202651-2007 contacts →

Exact match

“Cilantro Facilities Management ethos is to successfully and proactively manage mechanical, electrical services and energy centres across each of our blue chip clients’…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
25Exact matchLondon, United KingdomHQ recorded Sep 16, 202611-507 contacts →

Exact match

“IBOS optimises building systems, transforming them into intelligent, highly efficient operations.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase

Showing 25 of 140 energy management system contractors based in London, United Kingdom

See the full list, filter by size, metro and specialty, and access 1,233 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Energy management system contractors based in London, United Kingdom at a glance

As of Sep 16, 2026
51.7%Verified-email coverage
17.1Average contacts per company
1-10Median size (employees)
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
74
11-50
48
51-200
13
201-500
2
5,001-10,000
1

Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 140 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 London, United Kingdom whose business descriptions match “energy management system contractors” 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 1,233 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 September 16, 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.

Energy management system contractors by metro in the United Kingdom

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 “energy management system contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many energy management system contractors are there based in London, United Kingdom?

RevenueBase identified 140 company matches for energy management system contractors associated with London, United Kingdom as of September 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?

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

Which city in the United Kingdom has the most energy management system contractors?

London leads the United Kingdom with 140 company records, followed by Manchester (33) and Bristol (30).

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 1,233 professional contacts with verified work emails tracked across these 140 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 September 16, 2026.

Ready to reach these companies? Verified emails and direct dials for all 140 energy management system contractors based in London, United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

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.