Company lists · Data refreshed October 2026

Top 25 Industrial energy efficiency services based in London, United Kingdom

Name: Industrial energy efficiency services based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 16, 2026 136 companies tracked

RevenueBase identified 136 company matches for industrial energy efficiency services associated with London, United Kingdom as of October 2026 and tracks 3,671 professional contacts across them, including 1,903 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers company matches for industrial energy efficiency services 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 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 Oct 16, 2026 How this list was built

136Companies

3,671Contacts tracked

1,903Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest industrial energy efficiency services based in London, United Kingdom

Ranked by team size

Top 25 of 136 company matches for industrial energy efficiency services based in London, United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Dalkia UK	Exact match	London, United KingdomHQ recorded Oct 16, 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 16, 2026 · View company records in RevenueBase
2	Penspen	Exact match	London, United KingdomHQ recorded Oct 16, 2026	1,001-5,000	1,056 contacts →
	Exact match “Penspen designs, maintains, and optimises energy infrastructure to improve access to secure and sustainable energy for communities worldwide.” Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
3	CFP Energy	Exact match	London, United KingdomHQ recorded Oct 16, 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 16, 2026 · View company records in RevenueBase
4	ZTP	Exact match	London, United KingdomHQ recorded Oct 16, 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 16, 2026 · View company records in RevenueBase
5	Longevity Partners	Exact match	London, United KingdomHQ recorded Oct 16, 2026	51-200	128 contacts →
	Exact match “Longevity Partners is a multidisciplinary energy and sustainability consultancy.” Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
6	Mitie Energy	Exact match	London, United KingdomHQ recorded Oct 16, 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 16, 2026 · View company records in RevenueBase
7	best.energy	Exact match	London, United KingdomHQ recorded Oct 16, 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 16, 2026 · View company records in RevenueBase
8	Eenergy	Exact match	London, United KingdomHQ recorded Oct 16, 2026	51-200	96 contacts →
	Exact match “eEnergy (AIM: EAAS) is a UK-based Energy-as-a-Service (EaaS) provider, funding and delivering energy-saving and energy-generating solutions across multi-site public sector and…” Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
9	Sustainable Advantage	Exact match	London, United KingdomHQ recorded Oct 16, 2026	51-200	86 contacts →
	Exact match “Sustainable Advantage partners with Private Equity funds and businesses across the UK, France, and wider Europe.” Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
10	Alfa Energy An Edison Energy Company	Exact match	London, United KingdomHQ recorded Oct 16, 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 16, 2026 · View company records in RevenueBase
11	Energy Drive	Exact match	London, United KingdomHQ recorded Oct 16, 2026	51-200	59 contacts →
	Exact match “We help heavy industry like steel become more energy efficient through the deployment of intelligent MV motor control via a zero-capex model: guaranteed net savings for the…” Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
12	Advantage Utilities LTD	Exact match	London, United KingdomHQ recorded Oct 16, 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 16, 2026 · View company records in RevenueBase
13	Greenlight	Exact match	London, United KingdomHQ recorded Oct 16, 2026	11-50	23 contacts →
	Exact match “GreenLight is a UK based engineering group established in 2008 that specializes in commercial fit-out, facility management, and renewable energy services with a core focus on…” Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
14	Zerogram	Exact match	London, United KingdomHQ recorded Oct 16, 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 16, 2026 · View company records in RevenueBase
15	Future Energy Partners	Exact match	London, United KingdomHQ recorded Oct 16, 2026	1-10	13 contacts →
	Exact match “ENERGY TRANSITION We provide clean energy options and practical solutions for our clients, and pride ourselves in being a consultancy that is dedicated to delivering today’s…” Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
16	Mees Solutions	Exact match	London, United KingdomHQ recorded Oct 16, 2026	11-50	11 contacts →
	Exact match “INNOVATIVE & COMPREHENSIVE MEES SOLUTIONS MEES Solutions was founded by three industry experts to provide specialist advice and modelling for all aspects of the Minimum Energy…” Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
17	Flow&ebb LTD	Exact match	London, United KingdomHQ recorded Oct 16, 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 16, 2026 · View company records in RevenueBase
18	CAP Energy	Exact match	London, United KingdomHQ recorded Oct 16, 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 16, 2026 · View company records in RevenueBase
19	Orxagrid LTD	Exact match	London, United KingdomHQ recorded Oct 16, 2026	11-50	11 contacts →
	Exact match “Energy optimisation analytics that improve energy efficiency, optimise assets and prevent faults” Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
20	Kantor Energy Limited	Exact match	London, United KingdomHQ recorded Oct 16, 2026	1,001-5,000	11 contacts →
	Exact match “Kantor Energy offers sustainable engineering services to clients across all sectors.” Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
21	Mecserve	Exact match	London, United KingdomHQ recorded Oct 16, 2026	11-50	11 contacts →
	Exact match “A MEP Design and Energy + Sustainability Consultancy, we've been “Engineering Exceptional Environment Solutions for Buildings” every day since 1973, working on buildings across…” Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
22	BTP Consultants	Exact match	London, United KingdomHQ recorded Oct 16, 2026	11-50	10 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 · Oct 16, 2026 · View company records in RevenueBase
23	Twenty ONE Engineering	Exact match	London, United KingdomHQ recorded Oct 16, 2026	11-50	10 contacts →
	Exact match “We offer a world leading Energy and Engineering support to our clients.” Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
24	Co2 Controls LTD	Exact match	London, United KingdomHQ recorded Oct 16, 2026	1-10	7 contacts →
	Exact match “Our goal is to optimise energy use and reduce operating costs - helping you achieve your business and environmental goals.” Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
25	Focus Green	Exact match	London, United KingdomHQ recorded Oct 16, 2026	1-10	6 contacts →
	Exact match “Focus Green provides simple and easy-to-understand energy audits and carbon reduction plans.” Recorded in the RevenueBase company graph · Oct 16, 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 “industrial energy efficiency services”. 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 136 industrial energy efficiency services based in London, United Kingdom

See the full list, filter by size, metro and specialty, and access 1,903 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Industrial energy efficiency services based in London, United Kingdom at a glance

As of Oct 16, 2026

51.8%Verified-email coverage

27.0Average contacts per company

1-10Median size (employees)

Oct 16, 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

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 136 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 “industrial energy efficiency services” 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 1,903 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 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.

Industrial energy efficiency services by metro in the United Kingdom

Industrial energy efficiency services in Manchester26

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 “industrial energy efficiency services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many industrial energy efficiency services are there based in London, United Kingdom?

RevenueBase identified 136 company matches for industrial energy efficiency services 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?

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 industrial energy efficiency services?

London leads the United Kingdom with 136 company records, followed by Manchester (26) and Bristol (18).

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 1,903 professional contacts with verified work emails tracked across these 136 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 16, 2026.

Ready to reach these companies? Verified emails and direct dials for all 136 industrial energy efficiency services based in London, United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

Industrial energy efficiency services by geography

Browse the directory

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.