Company lists · Data refreshed October 2026

Top 25 Facility energy management companies based in London, United Kingdom

Name: Facility energy management companies based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 12, 2026 157 companies tracked

RevenueBase identified 157 company matches for facility energy management companies associated with London, United Kingdom as of October 2026 and tracks 14,939 professional contacts across them, including 4,145 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers company matches for facility energy management companies 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 October 12, 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 Oct 12, 2026 How this list was built

157Companies

14,939Contacts tracked

4,145Verified emails

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The 25 largest facility energy management companies based in London, United Kingdom

Ranked by team size

Top 25 of 157 company matches for facility energy management companies based in London, United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 12, 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	OCS	Exact match	London, United KingdomHQ recorded Oct 12, 2026	10001+	8,549 contacts →
	Exact match “Customers across all sectors depend on secure, optimised environments that enable end users to achieve their goals and purpose.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
2	Shell Energy	Exact match	London, United KingdomHQ recorded Oct 12, 2026	1,001-5,000	2,589 contacts →
	Exact match “We help businesses manage energy needs, boost efficiency, control costs and achieve decarbonisation goals for a better energy future.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
3	Dalkia UK	Exact match	London, United KingdomHQ recorded Oct 12, 2026	5,001-10,000	1,110 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 · Oct 12, 2026 · View company records in RevenueBase
4	Inviron Rebranded To Dalkia UK	Exact match	London, United KingdomHQ recorded Oct 12, 2026	501-1,000	315 contacts →
	Exact match “Exciting news - we have rebranded to Dalkia in the UK.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
5	CFP Energy	Exact match	London, United KingdomHQ recorded Oct 12, 2026	201-500	173 contacts →
	Exact match “CFP Energy is a leading provider of energy and environmental solutions for industrial and commercial clients.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
6	ZTP	Exact match	London, United KingdomHQ recorded Oct 12, 2026	51-200	128 contacts →
	Exact match “At ZTP, we’re committed to accelerating the transition to a more sustainable future by reducing the negative impact of human activity on our planet - ecologically, financially…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
7	Longevity Partners	Exact match	London, United KingdomHQ recorded Oct 12, 2026	51-200	128 contacts →
	Exact match “Longevity Partners is a multidisciplinary energy and sustainability consultancy.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
8	Mitie Energy	Exact match	London, United KingdomHQ recorded Oct 12, 2026	51-200	126 contacts →
	Exact match “Mitie Energy are an award-winning, UK-based energy, utilities and sustainability solutions business.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
9	best.energy	Exact match	London, United KingdomHQ recorded Oct 12, 2026	51-200	105 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 · Oct 12, 2026 · View company records in RevenueBase
10	Alfa Energy An Edison Energy Company	Exact match	London, United KingdomHQ recorded Oct 12, 2026	201-500	83 contacts →
	Exact match “Alfa Energy Group (an Edison Energy company) is an international energy, sustainability and technology consultant partner with 200 employees over four international locations.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
11	3mse LTD	Exact match	London, United KingdomHQ recorded Oct 12, 2026	51-200	72 contacts →
	Exact match “3MSe Ltd are an experienced provider of turnkey Building Management Systems.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
12	Jones FM	Exact match	London, United KingdomHQ recorded Oct 12, 2026	51-200	68 contacts →
	Exact match “Working across London, South and North regions, our accomplished team can provide Building Services, Maintenance & Energy Management to suit all budgets and requirements.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
13	GEM Environmental Building Services LTD	Exact match	London, United KingdomHQ recorded Oct 12, 2026	51-200	58 contacts →
	Exact match “GEM Environmental Building Services LTD was founded 20 years ago originally based in East London.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
14	Advantage Utilities LTD	Exact match	London, United KingdomHQ recorded Oct 12, 2026	11-50	53 contacts →
	Exact match “Advantage Utilities mission is to provide customers with a “One-Stop-Shop” for all their energy needs – with Market Leading Data/Expertise and Unrivalled “Drop Everything”…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
15	KCE FM Limited	Exact match	London, United KingdomHQ recorded Oct 12, 2026	51-200	42 contacts →
	Exact match “KCE FM Limited is renowned for its commitment towards client satisfaction throughout its Facilities Management, Building Services Maintenance and Building Fabric project works.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
16	Sidekick Group LTD Certified B Corp	Exact match	London, United KingdomHQ recorded Oct 12, 2026	1,001-5,000	33 contacts →
	Exact match “We are the UK's fastest growing Facilities Management company.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
17	HPS Services LTD	Exact match	London, United KingdomHQ recorded Oct 12, 2026	51-200	31 contacts →
	Exact match “We believe that everyone deserves a fantastic place to live, learn, work and stay.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
18	Henshall & Sheehy LTD	Exact match	London, United KingdomHQ recorded Oct 12, 2026	51-200	28 contacts →
	Exact match “Henshall & Sheehy manages a complete range of facilities services for over 200 clients at locations throughout the UK.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
19	Ethos Facilities Limited	Exact match	London, United KingdomHQ recorded Oct 12, 2026	501-1,000	25 contacts →
	Exact match “Ethos Facilities Ltd provides a total FM solution to some of the most prestigious organisations in the UK.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
20	Siemsatec LTD	Exact match	London, United KingdomHQ recorded Oct 12, 2026	1-10	16 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 · Oct 12, 2026 · View company records in RevenueBase
21	Commercial Energy Solutions LTD CES	Exact match	London, United KingdomHQ recorded Oct 12, 2026	11-50	15 contacts →
	Exact match “At CES (Commercial Energy Solutions), we specialise in delivering bespoke utility management solutions to help businesses reduce costs, improve energy efficiency, and achieve…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
22	Zerogram	Exact match	London, United KingdomHQ recorded Oct 12, 2026	1-10	14 contacts →
	Exact match “Zerogram is on a mission to make net zero not just possible, but practical.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
23	Apleona UK	Exact match	London, United KingdomHQ recorded Oct 12, 2026	1,001-5,000	13 contacts →
	Exact match “Apleona UK is part of a global business providing Facilities Management (FM), with over 40 years of experience and expertise behind us after forming as a small cleaning company in…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
24	Flow&ebb LTD	Exact match	London, United KingdomHQ recorded Oct 12, 2026	11-50	11 contacts →
	Exact match “We often talk to people in large businesses who are not getting the support they need to manage their energy costs well.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
25	CAP Energy	Exact match	London, United KingdomHQ recorded Oct 12, 2026	11-50	11 contacts →
	Exact match “Cap Energy installs bespoke, accessible energy monitors at a site & appliance level and provides incredible data on power usage.” Recorded in the RevenueBase company graph · Oct 12, 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 “facility energy management companies”. 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 157 facility energy management companies based in London, United Kingdom

See the full list, filter by size, metro and specialty, and access 4,145 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Facility energy management companies based in London, United Kingdom at a glance

As of Oct 12, 2026

27.7%Verified-email coverage

95.2Average contacts per company

1-10Median size (employees)

Oct 12, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 157 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 “facility energy management companies” 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 4,145 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 October 12, 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.

Facility energy management companies by metro in the United Kingdom

Facility energy management companies in Manchester33

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

How many facility energy management companies are there based in London, United Kingdom?

RevenueBase identified 157 company matches for facility energy management companies associated with London, United Kingdom as of October 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?

OCS 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 facility energy management companies?

London leads the United Kingdom with 157 company records, followed by Manchester (33) and Birmingham (22).

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 4,145 professional contacts with verified work emails tracked across these 157 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 October 12, 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.