Company lists · Data refreshed October 2026

Top 25 Commercial energy retrofitting companies based in the United Kingdom

Name: Commercial energy retrofitting 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 10, 2026 390 companies tracked

RevenueBase identified 390 company matches for commercial energy retrofitting companies associated with the United Kingdom as of October 2026 and tracks 2,790 professional contacts across them, including 827 with verified work emails. London is the largest hub.

This list covers company matches for commercial energy retrofitting 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 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

390Companies

2,790Contacts tracked

827Verified emails

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The 25 largest commercial energy retrofitting companies based in the United Kingdom

Ranked by team size

Top 25 of 390 company matches for commercial energy retrofitting companies 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	Livgreen	Exact match	Bristol, United KingdomHQ recorded Oct 10, 2026	201-500	111 contacts →
	Exact match “We are a leading provider of retrofit residential decarbonisation across the UK.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
2	Sustainable Building Services UK LTD	Exact match	Skelmersdale, United KingdomHQ recorded Oct 10, 2026	51-200	94 contacts →
	Exact match “Sustainable Building Services (UK) Ltd (SBS) is a purpose-led, multi-award-winning turnkey solutions provider specialising in retrofit energy efficiency and decarbonisation works…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
3	AMBIT	Exact match	London, United KingdomHQ recorded Oct 10, 2026	51-200	81 contacts →
	Exact match “We deliver retrofit and decarbonisation projects across London and the Thames Corridor, with the capability to operate nationally through the support of the Workplace Futures…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
4	IZ Energy Services LTD	Exact match	Barking, United KingdomHQ recorded Oct 10, 2026	51-200	54 contacts →
	Exact match “IZ Energy is pioneering a sustainable future.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
5	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
6	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
7	Avonside Energy	Exact match	Rearsby, United KingdomHQ recorded Oct 10, 2026	201-500	37 contacts →
	Exact match “Avonside Energy: Your Partner in Sustainable Building Solutions At Avonside Energy, we are dedicated to delivering best-in-class services across: New Build Insulation…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
8	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
9	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
10	Thrift Energy LTD	Exact match	Gateshead, United KingdomHQ recorded Oct 10, 2026	51-200	29 contacts →
	Exact match “Thrift Energy is as a leading installer of Insulation, Heating, Electrical and Renewable Energy technologies.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
11	Integrated BMS LTD	Exact match	Newark, United KingdomHQ recorded Oct 10, 2026	11-50	26 contacts →
	Exact match “Integrated BMS specialise in providing Energy Management Systems for the built environment.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
12	Energys Group	Exact match	Billingshurst, United KingdomHQ recorded Oct 10, 2026	11-50	25 contacts →
	Exact match “Welcome to Energys Group.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
13	Elite Energy	Exact match	Stockton-on-tees, United KingdomHQ recorded Oct 10, 2026	51-200	23 contacts →
	Exact match “Elite Energy – Powering a Greener, Smarter UK Elite Energy is an award-winning energy solutions company helping homeowners across the UK reduce energy bills, cut carbon emissions…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
14	Retrofitworks Co-Operative	Exact match	London, United KingdomHQ recorded Oct 10, 2026	11-50	22 contacts →
	Exact match “RetrofitWorks is a ‘not for private profit’ co-operative, matching communities & homeowners who want to retrofit their homes, with local, quality assured SME assessors and…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
15	Osborne Energy Limited	Exact match	Hastings, United KingdomHQ recorded Oct 10, 2026	11-50	21 contacts →
	Exact match “Osborne Energy are a leading provider of energy services and projects in the UK, providing Main and Sub-Contractor services and delivering domestic and commercial retrofit and…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
16	Dimension Engineering Group Limited	Exact match	Billericay, United KingdomHQ recorded Oct 10, 2026	11-50	21 contacts →
	Exact match “Dimension Engineering Group helps estates run smarter, greener and more connected.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
17	CT ECO Plus	Exact match	Littlehampton, United KingdomHQ recorded Oct 10, 2026	11-50	19 contacts →
	Exact match “At CT Eco Plus, we deliver trusted, fully turnkey energy efficiency and retrofit solutions across the UK.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
18	ECO 247	Exact match	St Asaph, United KingdomHQ recorded Oct 10, 2026	51-200	19 contacts →
	Exact match “At Eco 247, we are committed to building a greener future through sustainable energy solutions.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
19	Making Energy Greener	Exact match	Southport, United KingdomHQ recorded Oct 10, 2026	51-200	18 contacts →
	Exact match “With over 20 years of experience in the energy services sector, Making Energy Greener are committed to transforming our community's homes with innovative energy-saving products…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
20	ECO Systems Group LTD	Exact match	Harold Wood, United KingdomHQ recorded Oct 10, 2026	51-200	18 contacts →
	Exact match “Eco Systems Group has been delivering high-quality insulation, retrofit, solar solutions & air source heat pumps across the commercial and residential sectors for over 13 years.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
21	MESH	Exact match	Farnham, United KingdomHQ recorded Oct 10, 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 10, 2026 · View company records in RevenueBase
22	Pillinger Controls LTD	Exact match	Reigate, United KingdomHQ recorded Oct 10, 2026	51-200	17 contacts →
	Exact match “Pillinger Controls Ltd was acquired by Nordomatic in 2023.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
23	Design Specifics LTD	Exact match	London, United KingdomHQ recorded Oct 10, 2026	11-50	16 contacts →
	Exact match “We are at the forefront of retrofit design services for PAS 2035 & PAS 2038, delivering solutions that drive sustainability and efficiency through our vast combined retrofit…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
24	Building Energy Experts	Exact match	Bristol, United KingdomHQ recorded Oct 10, 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 10, 2026 · View company records in RevenueBase
25	Syntegra Group	Exact match	Reading, United KingdomHQ recorded Oct 10, 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 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 retrofitting 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 390 commercial energy retrofitting companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 827 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Commercial energy retrofitting companies based in the United Kingdom at a glance

As of Oct 10, 2026

29.6%Verified-email coverage

7.2Average contacts per company

1-10Median size (employees)

12.3%Largest-city concentration · London

Oct 10, 2026Page data refreshed

Companies by employee count

1-10

196

11-50

148

51-200

201-500

1,001-5,000

5,001-10,000

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 390 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 retrofitting 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 827 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 retrofitting companies by metro

Commercial energy retrofitting companies in London48

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

How many commercial energy retrofitting companies are there based in the United Kingdom?

RevenueBase identified 390 company matches for commercial energy retrofitting 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?

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

Which city has the most commercial energy retrofitting companies?

London leads with 48 company records, followed by Manchester (14) and Bristol (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 827 professional contacts with verified work emails tracked across these 390 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.