Company lists · Data refreshed October 2026

Top 25 Energy efficiency auditing companies based in the United Kingdom

Name: Energy efficiency auditing companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 12, 2026 256 companies tracked

RevenueBase identified 256 company matches for energy efficiency auditing companies associated with the United Kingdom as of October 2026 and tracks 961 professional contacts across them, including 300 with verified work emails. London is the largest hub.

This list covers company matches for energy efficiency auditing companies 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 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

256Companies

961Contacts tracked

300Verified emails

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

The 25 largest energy efficiency auditing companies based in the United Kingdom

Ranked by team size

Top 25 of 256 company matches for energy efficiency auditing companies based in the 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	Cotopaxi LTD	Exact match	White Moss Business Park, United KingdomHQ recorded Oct 12, 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 12, 2026 · View company records in RevenueBase
2	Cenergist	Exact match	Washington, United KingdomHQ recorded Oct 12, 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 12, 2026 · View company records in RevenueBase
3	Greener Solutions Group LTD	Exact match	North Shields, United KingdomHQ recorded Oct 12, 2026	11-50	23 contacts →
	Exact match “Greener Solutions Group is a PAS 2035 retrofit and energy efficiency contractor delivering for housing associations, ALMOs, local authorities and main contractors across the UK.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
4	MESH	Exact match	Farnham, United KingdomHQ recorded Oct 12, 2026	11-50	17 contacts →
	Exact match “We are independent building performance engineering specialists, working across the built environment to help architects, commercial developers, housebuilders and building owners…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
5	Energy Gain UK	Exact match	Trafford Park, United KingdomHQ recorded Oct 12, 2026	11-50	17 contacts →
	Exact match “Energy Gain UK consults, designs, executes, maintains and arranges funding for energy efficiency projects within the UK and global marketplace.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
6	EEC Energy Efficiency Consultants	Exact match	Coventry, United KingdomHQ recorded Oct 12, 2026	11-50	14 contacts →
	Exact match “With over 14 years’ working in the industry, EEC has a proven track record that has established the business as one of the UK's leading Energy Assessment provider.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
7	ECO Target	Exact match	Barking And Dagenham, United KingdomHQ recorded Oct 12, 2026	11-50	14 contacts →
	Exact match “Welcome to Eco Target – we are energy specialists based in London and our aim is to help our customers save money on energy bills and reduce carbon footprint.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
8	RMS Energy Solutions	Exact match	Coventry, United KingdomHQ recorded Oct 12, 2026	11-50	14 contacts →
	Exact match “Providing domestic energy efficiency solutions to save our customers money and save the environment.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
9	Carbon Architecture	Exact match	Hampton Hill, United KingdomHQ recorded Oct 12, 2026	11-50	12 contacts →
	Exact match “Carbon Architecture has spent the last twelve years helping energy intensive organisations optimise their processes.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
10	Smartech Energy	Exact match	Chippenham, United KingdomHQ recorded Oct 12, 2026	1-10	12 contacts →
	Exact match “SAVE ENERGY.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
11	Briary	Exact match	Old Hatfield, United KingdomHQ recorded Oct 12, 2026	11-50	11 contacts →
	Exact match “SAP Assessments and Solutions - Design and as built Energy Feasibility Studies Energy Consumption Statements Air Leakage Testing Energy Performance Certificates Part L compliance…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
12	IRT Surveys	Exact match	Dundee, United KingdomHQ recorded Oct 12, 2026	11-50	11 contacts →
	Exact match “Established in 2002, we work with housing associations, local authorities, sustainability consultants and building surveyors to help understand and improve the condition and…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
13	EPS Group	Exact match	Nottingham, United KingdomHQ recorded Oct 12, 2026	11-50	10 contacts →
	Exact match “An established and extensive provider of Energy Consultancy and Compliance services within the residential, commercial and public building sectors.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
14	Twenty ONE Engineering	Exact match	London, United KingdomHQ recorded Oct 12, 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 12, 2026 · View company records in RevenueBase
15	Cocuun	Exact match	Kingston Upon Hull, United KingdomHQ recorded Oct 12, 2026	11-50	9 contacts →
	Exact match “At Cocuun, we help find solutions to improve your home's energy efficiency.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
16	Real Control Solutions LTD	Exact match	Manchester, United KingdomHQ recorded Oct 12, 2026	1-10	9 contacts →
	Exact match “Real Control Solutions, was founded based on providing quality commitments to our clients.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
17	The Warmfront Team LTD	Exact match	Brierley Hill, United KingdomHQ recorded Oct 12, 2026	11-50	9 contacts →
	Exact match “The Warmfront Team specialises in the provision of energy surveying consultancy services throughout the UK.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
18	EEH Solutions	Exact match	Harlow, United KingdomHQ recorded Oct 12, 2026	11-50	9 contacts →
	Exact match “Eco Efficient Home Solutions (EEH Solutions) is a trusted provider of energy efficiency and retrofit services, specializing in sustainable solutions that meet the highest industry…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
19	Diversity Energy Solutions	Exact match	Banff, United KingdomHQ recorded Oct 12, 2026	11-50	9 contacts →
	Exact match “Diversity Energy Solutions offers impartial energy consultation and advice, as well as installation, testing and certification services to deliver energy efficiencies to support…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
20	BSSEC	Exact match	Westbury, United KingdomHQ recorded Oct 12, 2026	1-10	9 contacts →
	Exact match “BSSEC are commercial energy efficiency consultants.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
21	Ashby Energy Assessors	Exact match	Melton Mowbray, United KingdomHQ recorded Oct 12, 2026	11-50	8 contacts →
	Exact match “Established in 2007 by our Senior Assessor Glenn Shewan, a trained Engineer, Ashby Energy Assessors emerged from the recognition of a pressing need for an energy assessment…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
22	Hospitality Energy Saving & Sustainability	Exact match	United KingdomHQ recorded Oct 12, 2026	11-50	8 contacts →
	Exact match “At HESS, we help hospitality businesses transform their energy consumption and sustainability practices, achieving measurable results without disrupting operations.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
23	Bierce Surveying LTD	Exact match	Aylesbury, United KingdomHQ recorded Oct 12, 2026	11-50	8 contacts →
	Exact match “Bierce’s wide and diverse range of surveying activities include auditing and technical monitoring for companies involved in energy efficiency measures, Energy Performance…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
24	Ellipse Energy Group	Exact match	Leicester, United KingdomHQ recorded Oct 12, 2026	11-50	8 contacts →
	Exact match “Ellipse Energy was established in 2011, by a team of experienced professionals from some of the well-known names in the energy efficiency sector.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
25	Co2 Controls LTD	Exact match	London, United KingdomHQ recorded Oct 12, 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 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 “energy efficiency auditing 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 256 energy efficiency auditing companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 300 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Energy efficiency auditing companies based in the United Kingdom at a glance

As of Oct 12, 2026

31.2%Verified-email coverage

3.8Average contacts per company

1-10Median size (employees)

13.7%Largest-city concentration · London

Oct 12, 2026Page data refreshed

Companies by employee count

1-10

190

11-50

51-200

201-500

1,001-5,000

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 256 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 “energy efficiency auditing 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 300 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.

Energy efficiency auditing companies by metro

Energy efficiency auditing companies in London35

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 efficiency auditing companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many energy efficiency auditing companies are there based in the United Kingdom?

RevenueBase identified 256 company matches for energy efficiency auditing companies 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?

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

Which city has the most energy efficiency auditing companies?

London leads with 35 company records, followed by Nottingham (7) and Manchester (6).

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 300 professional contacts with verified work emails tracked across these 256 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.

Ready to reach these companies? Verified emails and direct dials for all 256 energy efficiency auditing companies based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

Energy efficiency auditing companies 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.