Company lists · Data refreshed October 2026

Top 25 Energy efficiency audit companies based in the United Kingdom

Name: Energy efficiency audit 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 316 companies tracked

RevenueBase identified 316 company matches for energy efficiency audit companies associated with the United Kingdom as of October 2026 and tracks 1,690 professional contacts across them, including 622 with verified work emails. London is the largest hub.

This list covers company matches for energy efficiency audit 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

316Companies

1,690Contacts tracked

622Verified emails

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

Ranked by team size

Top 25 of 316 company matches for energy efficiency audit 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	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
2	Team Energy Auditing Agency LTD	Exact match	Milton Keynes, United KingdomHQ recorded Oct 12, 2026	51-200	70 contacts →
	Exact match “TEAM is the UK’s leading supplier of carbon and energy management solutions committed to driving the efficiency and sustainability of energy consumption and environmental…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
3	Businesswise Solutions	Exact match	Nelson, United KingdomHQ recorded Oct 12, 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 12, 2026 · View company records in RevenueBase
4	Carbonxgen Limited	Exact match	Sandhurst, United KingdomHQ recorded Oct 12, 2026	11-50	49 contacts →
	Exact match “Carbonxgen is a leading consultancy that specialises in solving complex energy and sustainability challenges.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
5	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
6	Silcock Dawson And Partners	Exact match	Princes Risborough, United KingdomHQ recorded Oct 12, 2026	11-50	43 contacts →
	Exact match “Silcock Dawson & Partners are a leading firm of Building Services and Energy Consultants.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
7	Brownlow Utilities	Exact match	Newton-le-willows., United KingdomHQ recorded Oct 12, 2026	11-50	41 contacts →
	Exact match “Brownlow Utilities - the energy and sustainability expert!” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
8	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
9	SCS Sustainable Construction Services	Exact match	Bristol, United KingdomHQ recorded Oct 12, 2026	11-50	36 contacts →
	Exact match “We believe that if you understand your environmental targets, you will have a better understanding of their real-world impacts.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
10	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
11	PRO Enviro LTD Certified B Corp	Exact match	Rugby, United KingdomHQ recorded Oct 12, 2026	11-50	20 contacts →
	Exact match “Pro Enviro is a specialist energy engineering and process optimisation consultancy, with over 30 years’ experience working with manufacturing and other business clients.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
12	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
13	Concept Energy Solutions LTD	Exact match	Basingstoke, United KingdomHQ recorded Oct 12, 2026	11-50	16 contacts →
	Exact match “At Concept Energy, we’re on a mission to decarbonise UK commercial buildings.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
14	Building Energy Experts	Exact match	Bristol, United KingdomHQ recorded Oct 12, 2026	11-50	16 contacts →
	Exact match “Award-winning sustainability consulting, testing and retrofit company, based in Bristol but operating nationwide.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
15	Syntegra Group	Exact match	Reading, United KingdomHQ recorded Oct 12, 2026	11-50	16 contacts →
	Exact match “The Syntegra group of companies is a multi-award winning specialist energy efficiency and low carbon building solutions provider.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
16	Base Energy Services LTD	Exact match	Liverpool, United KingdomHQ recorded Oct 12, 2026	1-10	14 contacts →
	Exact match “Base Energy was established in 2008 and now has offices in the North West & South of England.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
17	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
18	Decerna	Exact match	Cramlington, United KingdomHQ recorded Oct 12, 2026	11-50	14 contacts →
	Exact match “Decerna is a specialist commercial sustainability consultancy.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
19	Aynam Energy LTD	Exact match	Kilmarnock, United KingdomHQ recorded Oct 12, 2026	1-10	14 contacts →
	Exact match “Aynam Energy Ltd is a trusted engineering consultancy working within a progressive and dynamic atmosphere, providing a range of energy services for the built environment.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
20	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
21	Elemental Consulting Group	Exact match	Siskin Parkway East, United KingdomHQ recorded Oct 12, 2026	11-50	14 contacts →
	Exact match “Optimise energy, reach net zero and ensure compliance.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
22	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
23	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
24	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
25	GEP Environmental LTD	Exact match	Edinburgh, United KingdomHQ recorded Oct 12, 2026	11-50	11 contacts →
	Exact match “GEP Environmental are leading providers of energy and environmental consultancy services to clients across the UK.” 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 audit 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 316 energy efficiency audit companies based in the United Kingdom

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

As of Oct 12, 2026

36.8%Verified-email coverage

5.3Average contacts per company

1-10Median size (employees)

13.3%Largest-city concentration · London

Oct 12, 2026Page data refreshed

Companies by employee count

1-10

234

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 316 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 audit 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 622 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 audit companies by metro

Energy efficiency audit companies in London42

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

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

RevenueBase identified 316 company matches for energy efficiency audit 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?

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

Which city has the most energy efficiency audit companies?

London leads with 42 company records, followed by Leeds (8) and Nottingham (8).

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 622 professional contacts with verified work emails tracked across these 316 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.