Company lists · Data refreshed October 2026

Top 25 Commercial energy efficiency contractors based in the United Kingdom

Name: Commercial energy efficiency contractors based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 10, 2026 597 companies tracked

RevenueBase identified 597 company matches for commercial energy efficiency contractors associated with the United Kingdom as of October 2026 and tracks 14,128 professional contacts across them, including 4,011 with verified work emails. London is the largest hub.

This list covers company matches for commercial energy efficiency contractors 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 October 10, 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 10, 2026 How this list was built

597Companies

14,128Contacts tracked

4,011Verified emails

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The 25 largest commercial energy efficiency contractors based in the United Kingdom

Ranked by team size

Top 25 of 597 company matches for commercial energy efficiency contractors based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 10, 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	British GAS	Exact match	Windsor, United KingdomHQ recorded Oct 10, 2026	10001+	9,535 contacts →
	Exact match “Taking care of things.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
2	Tritility	Exact match	Jarrow, United KingdomHQ recorded Oct 10, 2026	51-200	130 contacts →
	Exact match “Tritility is a UK business energy consultancy helping organisations reduce energy and overhead costs through smarter electricity, gas and water procurement.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
3	TROO	Exact match	Doxford International Business Park, United KingdomHQ recorded Oct 10, 2026	51-200	112 contacts →
	Exact match “Managing business energy can be overwhelming.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
4	Vibrant Energy Matters	Exact match	Blackwood, United KingdomHQ recorded Oct 10, 2026	51-200	87 contacts →
	Exact match “Established in 2008 to carry out EPCs, our services expanded from 2015 to include all residential property services.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
5	AMBER	Exact match	Cardiff, United KingdomHQ recorded Oct 10, 2026	51-200	70 contacts →
	Exact match “We are an award-winning energy consultancy and certified B Corp™.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
6	ECO Logic Partners	Exact match	Team Valley, United KingdomHQ recorded Oct 10, 2026	11-50	63 contacts →
	Exact match “We bring good energy to the table to help you save yours.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
7	Energy Drive	Exact match	London, United KingdomHQ recorded Oct 10, 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 10, 2026 · View company records in RevenueBase
8	Businesswise Solutions	Exact match	Nelson, United KingdomHQ recorded Oct 10, 2026	11-50	56 contacts →
	Exact match “We’re an energy management consultancy specialising in supporting energy-intensive businesses with energy procurement, energy management, and sustainability challenges.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
9	ECBS	Exact match	Hebburn, United KingdomHQ recorded Oct 10, 2026	51-200	54 contacts →
	Exact match “At ECBS we specialise in working with customers to significantly reduce their business utility costs and make the necessary steps towards a greener future.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
10	Business Advisory Service LTD	Exact match	Blackpool, United KingdomHQ recorded Oct 10, 2026	51-200	48 contacts →
	Exact match “Business Advisory Service has one key strategy - helping businesses throughout England, Scotland and Wales find effective ways to reduce their Business Gas and Business…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
11	Cotswold Energy Group	Exact match	Stonehouse, United KingdomHQ recorded Oct 10, 2026	51-200	47 contacts →
	Exact match “Secure your greener future with renewable energy solutions!” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
12	Cotopaxi LTD	Exact match	White Moss Business Park, United KingdomHQ recorded Oct 10, 2026	11-50	47 contacts →
	Exact match “Cotopaxi Energy is an independent engineering consultancy specialising in utility and carbon reduction.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
13	Fusion For Business	Exact match	Durham, United KingdomHQ recorded Oct 10, 2026	51-200	44 contacts →
	Exact match “At Fusion For Business, we believe in the value of genuine human connection - people doing business with people they trust.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
14	Procure Smart	Exact match	United Kingdon, United KingdomHQ recorded Oct 10, 2026	51-200	43 contacts →
	Exact match “Procure your business services the way.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
15	Savemoneycutcarbon	Exact match	Bury St Edmunds, United KingdomHQ recorded Oct 10, 2026	11-50	41 contacts →
	Exact match “SaveMoneyCutCarbon helps organisations reduce energy, water and carbon consumption across their buildings and operations.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
16	Brownlow Utilities	Exact match	Newton-le-willows., United KingdomHQ recorded Oct 10, 2026	11-50	41 contacts →
	Exact match “Brownlow Utilities - the energy and sustainability expert!” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
17	Cenergist	Exact match	Washington, United KingdomHQ recorded Oct 10, 2026	201-500	40 contacts →
	Exact match “Cenergist is a specialist energy and water efficiency company in the UK and Europe.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
18	Carbon Rewind	Exact match	Watford, United KingdomHQ recorded Oct 10, 2026	51-200	39 contacts →
	Exact match “At Carbon Rewind, we are optimistic about the energy future of the UK, and committed to doing our part to deliver the vision of a more sustainable future.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
19	Greenlite Group	Exact match	Blackpool, United KingdomHQ recorded Oct 10, 2026	51-200	34 contacts →
	Exact match “We deliver market leading efficient lighting, electrical and energy solutions to businesses across the UK.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
20	On-Site Energy LTD	Exact match	Liverpool, United KingdomHQ recorded Oct 10, 2026	11-50	33 contacts →
	Exact match “On-Site Energy was founded to support energy intensive manufacturers to improve their energy efficiency and achieve their sustainability goals through innovation and an…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
21	Scis Group	Exact match	Fareham, United KingdomHQ recorded Oct 10, 2026	51-200	31 contacts →
	Exact match “Hello.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
22	Emissis	Exact match	Stokesley, United KingdomHQ recorded Oct 10, 2026	51-200	29 contacts →
	Exact match “Engineering energy efficiency that pays off.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
23	Ineco Energy	Exact match	Stoneleigh Park, United KingdomHQ recorded Oct 10, 2026	11-50	23 contacts →
	Exact match “Guiding businesses in their clean energy transition, by providing the best energy technology that prioritizes self-sufficiency, economic responsibility, and environmental…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
24	MCL Energy LTD	Exact match	Doncaster, United KingdomHQ recorded Oct 10, 2026	11-50	22 contacts →
	Exact match “MCL Energy has been providing innovative site energy solutions for almost three decades to many different sectors but with one common goal – to provide competent, cost-effective…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
25	Energy & Technical Services LTD	Exact match	Bristol, United KingdomHQ recorded Oct 10, 2026	11-50	20 contacts →
	Exact match “Energy and Technical Services is an expert in energy consulting and service and has been for 25th years.” Recorded in the RevenueBase company graph · Oct 10, 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 “commercial energy efficiency contractors”. 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 597 commercial energy efficiency contractors based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 4,011 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Commercial energy efficiency contractors based in the United Kingdom at a glance

As of Oct 10, 2026

28.4%Verified-email coverage

23.7Average contacts per company

1-10Median size (employees)

12.7%Largest-city concentration · London

Oct 10, 2026Page data refreshed

Companies by employee count

1-10

375

11-50

171

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 597 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 “commercial energy efficiency 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 4,011 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 10, 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.

Commercial energy efficiency contractors by metro

Commercial energy efficiency contractors in London76

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

How many commercial energy efficiency contractors are there based in the United Kingdom?

RevenueBase identified 597 company matches for commercial energy efficiency contractors associated with the 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?

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

Which city has the most commercial energy efficiency contractors?

London leads with 76 company records, followed by Manchester (17) and Leeds (11).

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 4,011 professional contacts with verified work emails tracked across these 597 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 10, 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.