Company lists · Data refreshed September 2026
Top 25 Energy efficiency contractors based in the United Kingdom
RevenueBase identified 568 company matches for energy efficiency contractors associated with the United Kingdom as of September 2026 and tracks 12,925 professional contacts across them, including 4,061 with verified work emails. London is the largest hub.
This list covers company matches for 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 September 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.
The 25 largest energy efficiency contractors based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 9,238 contacts → | ||||
Exact match “Taking care of things.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 2 | 171 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 · Sep 16, 2026 · View company records in RevenueBase | |||||
| 3 | 106 contacts → | ||||
Exact match “Managing business energy can be overwhelming.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 4 | 82 contacts → | ||||
Exact match “Are you looking for a specialist retrofit decarbonisation & energy efficiency contractor?” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 5 | 67 contacts → | ||||
Exact match “We’re a leading nationwide property services company established in 2013.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 6 | 66 contacts → | ||||
Exact match “We bring good energy to the table to help you save yours.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 7 | 62 contacts → | ||||
Exact match “Cenergist is a specialist energy and water efficiency company in the UK and Europe.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 8 | 60 contacts → | ||||
Exact match “Hello.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 9 | 60 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 · Sep 16, 2026 · View company records in RevenueBase | |||||
| 10 | 45 contacts → | ||||
Exact match “Secure your greener future with renewable energy solutions!” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 11 | 42 contacts → | ||||
Exact match “Cotopaxi Energy is an independent engineering consultancy specialising in utility and carbon reduction.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 12 | 37 contacts → | ||||
Exact match “Brownlow Utilities - the energy and sustainability expert!” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 13 | 28 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 · Sep 16, 2026 · View company records in RevenueBase | |||||
| 14 | 27 contacts → | ||||
Exact match “Eclipse Energy are specialists in providing affordable and efficient ways to keep your home warm and dry for less.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 15 | 25 contacts → | ||||
Exact match “At Eco 247, we are committed to building a greener future through sustainable energy solutions.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 16 | 23 contacts → | ||||
Exact match “Decerna is a specialist commercial sustainability consultancy.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 17 | 22 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 · Sep 16, 2026 · View company records in RevenueBase | |||||
| 18 | 22 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 · Sep 16, 2026 · View company records in RevenueBase | |||||
| 19 | 21 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 · Sep 16, 2026 · View company records in RevenueBase | |||||
| 20 | 21 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 · Sep 16, 2026 · View company records in RevenueBase | |||||
| 21 | 21 contacts → | ||||
Exact match “Furbnow is the complete solution for planning and delivering home energy projects.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 22 | 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 · Sep 16, 2026 · View company records in RevenueBase | |||||
| 23 | 20 contacts → | ||||
Exact match “We employ some of the best Retrofit Assessors and Retrofit Coordinators in the industry.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 24 | 20 contacts → | ||||
Exact match “Carbon Architecture has spent the last twelve years helping energy intensive organisations optimise their processes.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 25 | 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 · Sep 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 “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 568 energy efficiency contractors based in the United Kingdom
See the full list, filter by size, metro and specialty, and access 4,061 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Energy efficiency contractors based in the United Kingdom at a glance
As of Sep 16, 2026Companies by employee count
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 568 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 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 4,061 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 September 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.
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 contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many energy efficiency contractors are there based in the United Kingdom?
RevenueBase identified 568 company matches for energy efficiency contractors associated with the United Kingdom as of September 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 energy efficiency contractors?
London leads with 65 company records, followed by Birmingham (13) and Manchester (12).
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 4,061 professional contacts with verified work emails tracked across these 568 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 September 16, 2026.
Ready to reach these companies? Verified emails and direct dials for all 568 energy efficiency contractors based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Energy efficiency contractors by geography
- Energy efficiency contractors based in Barcelona, Spain
- Energy efficiency contractors based in Madrid, Spain
- Energy efficiency contractors based in Atlanta, United States
- Energy efficiency contractors based in Denver, United States
- Energy efficiency contractors based in Houston, United States
- Energy efficiency contractors based in New York, United States
- Energy efficiency contractors based in Australia
- Energy efficiency contractors based in Austria
- Energy efficiency contractors based in Belgium
- Energy efficiency contractors based in Brazil
- Energy efficiency contractors based in Canada
- Energy efficiency contractors based in Czechia
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Energy efficiency contractors based in Barcelona, Spain
- Energy efficiency contractors based in Madrid, Spain
- Energy efficiency contractors based in Atlanta, United States
- Energy efficiency contractors based in Denver, United States
- Energy efficiency contractors based in Houston, United States
- Energy efficiency contractors based in New York, United States
Company intelligence · public preview
Top 25 energy efficiency contractors based in the United Kingdom
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 568 matching company records for energy efficiency contractors based in the United Kingdom, with 12,925 tracked contacts and 4,061 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 16, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 energy efficiency contractors based in the United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  British GASbritishgas.co.ukHQ: Windsor, United KingdomReported employees: 10001+ | Windsor, United Kingdom | 10001+ | Exact match | 9,238 contacts → |
“Taking care of things.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  CFP Energycfp.energyHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 171 contacts → |
“CFP Energy is a leading provider of energy and environmental solutions for industrial and commercial clients.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  TROOtroocost.comHQ: Doxford International Business Park, United KingdomReported employees: 51-200 | Doxford International Business Park, United Kingdom | 51-200 | Exact match | 106 contacts → |
“Managing business energy can be overwhelming.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Sustainable Building Services UK LTDsustainablebuildinguk.com HQ: Skelmersdale, United KingdomReported employees: 51-200 | Skelmersdale, United Kingdom | 51-200 | Exact match | 82 contacts → |
“Are you looking for a specialist retrofit decarbonisation & energy efficiency contractor?” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  ECO Approachecoapproach.co.ukHQ: Beckenham, United KingdomReported employees: 51-200 | Beckenham, United Kingdom | 51-200 | Exact match | 67 contacts → |
“We’re a leading nationwide property services company established in 2013.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  ECO Logic Partnersecologicpartners.co.ukHQ: Team Valley, United KingdomReported employees: 11-50 | Team Valley, United Kingdom | 11-50 | Exact match | 66 contacts → |
“We bring good energy to the table to help you save yours.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Cenergistcenergist.comHQ: Washington, United KingdomReported employees: 201-500 | Washington, United Kingdom | 201-500 | Exact match | 62 contacts → |
“Cenergist is a specialist energy and water efficiency company in the UK and Europe.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Scis Groupscisltd.co.uk HQ: Fareham, United KingdomReported employees: 51-200 | Fareham, United Kingdom | 51-200 | Exact match | 60 contacts → |
“Hello.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Energy Driveenergydrivesystems.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 60 contacts → |
“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 description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Cotswold Energy Groupcotswold.energyHQ: Stonehouse, United KingdomReported employees: 51-200 | Stonehouse, United Kingdom | 51-200 | Exact match | 45 contacts → |
“Secure your greener future with renewable energy solutions!” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Cotopaxi LTDcotopaxienergy.comHQ: White Moss Business Park, United KingdomReported employees: 11-50 | White Moss Business Park, United Kingdom | 11-50 | Exact match | 42 contacts → |
“Cotopaxi Energy is an independent engineering consultancy specialising in utility and carbon reduction.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Brownlow Utilitiesbrownlowutilities.co.ukHQ: Newton-le-willows., United KingdomReported employees: 11-50 | Newton-le-willows., United Kingdom | 11-50 | Exact match | 37 contacts → |
“Brownlow Utilities - the energy and sustainability expert!” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | On-Site Energy LTDon-site.energy HQ: Liverpool, United KingdomReported employees: 11-50 | Liverpool, United Kingdom | 11-50 | Exact match | 28 contacts → |
“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 description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Eclipse Energyeclipseenergy.co.uk HQ: Halifax, United KingdomReported employees: 11-50 | Halifax, United Kingdom | 11-50 | Exact match | 27 contacts → |
“Eclipse Energy are specialists in providing affordable and efficient ways to keep your home warm and dry for less.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | ECO 247eco24-7.co.uk HQ: St Asaph, United KingdomReported employees: 51-200 | St Asaph, United Kingdom | 51-200 | Exact match | 25 contacts → |
“At Eco 247, we are committed to building a greener future through sustainable energy solutions.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Decernadecerna.co.uk HQ: Cramlington, United KingdomReported employees: 11-50 | Cramlington, United Kingdom | 11-50 | Exact match | 23 contacts → |
“Decerna is a specialist commercial sustainability consultancy.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Osborne Energy Limitedosborneenergy.co.uk HQ: Hastings, United KingdomReported employees: 11-50 | Hastings, United Kingdom | 11-50 | Exact match | 22 contacts → |
“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 description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | CT ECO Plusct.eco HQ: Littlehampton, United KingdomReported employees: 11-50 | Littlehampton, United Kingdom | 11-50 | Exact match | 22 contacts → |
“At CT Eco Plus, we deliver trusted, fully turnkey energy efficiency and retrofit solutions across the UK.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | MCL Energy LTDmclenergy.co.uk HQ: Doncaster, United KingdomReported employees: 11-50 | Doncaster, United Kingdom | 11-50 | Exact match | 21 contacts → |
“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 description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Making Energy Greenermakingenergygreener.co.uk HQ: Southport, United KingdomReported employees: 51-200 | Southport, United Kingdom | 51-200 | Exact match | 21 contacts → |
“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 description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Furbnowfurbnow.com HQ: Birmingham, United KingdomReported employees: 11-50 | Birmingham, United Kingdom | 11-50 | Exact match | 21 contacts → |
“Furbnow is the complete solution for planning and delivering home energy projects.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Energy & Technical Services LTDenergy-ts.comHQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 20 contacts → |
“Energy and Technical Services is an expert in energy consulting and service and has been for 25th years.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Osmosis ACDosmosis-acd.com HQ: Chorley, United KingdomReported employees: 11-50 | Chorley, United Kingdom | 11-50 | Exact match | 20 contacts → |
“We employ some of the best Retrofit Assessors and Retrofit Coordinators in the industry.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Carbon Architecturecarbonarchitecture.co.ukHQ: Hampton Hill, United KingdomReported employees: 11-50 | Hampton Hill, United Kingdom | 11-50 | Exact match | 20 contacts → |
“Carbon Architecture has spent the last twelve years helping energy intensive organisations optimise their processes.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | ECO Systems Group LTDecosystemsgroup.co.uk HQ: Harold Wood, United KingdomReported employees: 51-200 | Harold Wood, United Kingdom | 51-200 | Exact match | 18 contacts → |
“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 description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 568 company matches
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Energy efficiency contractors: dataset insights
September 16, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
563 records in the displayed employee bands.
5 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 568 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 16, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for energy efficiency contractors?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many energy efficiency contractors did RevenueBase find based in the United Kingdom?
The saved snapshot records 568 matching company records, 12,925 tracked contacts and 4,061 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 16, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Energy efficiency contractors by geography
- Energy efficiency contractors based in Barcelona, Spain
- Energy efficiency contractors based in Madrid, Spain
- Energy efficiency contractors based in Atlanta, United States
- Energy efficiency contractors based in Denver, United States
- Energy efficiency contractors based in Houston, United States
- Energy efficiency contractors based in New York, United States
- Energy efficiency contractors based in Australia
- Energy efficiency contractors based in Austria
- Energy efficiency contractors based in Belgium
- Energy efficiency contractors based in Brazil
- Energy efficiency contractors based in Canada
- Energy efficiency contractors based in Czechia
Cite this list
RevenueBase Data Team. Top 25 energy efficiency contractors based in the United Kingdom. Snapshot: September 16, 2026. https://revenuebase.ai/companies/energy-efficiency-contractors/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Energy efficiency contractors based in Barcelona, Spain
- Energy efficiency contractors based in Madrid, Spain
- Energy efficiency contractors based in Atlanta, United States
- Energy efficiency contractors based in Denver, United States
- Energy efficiency contractors based in Houston, United States
- Energy efficiency contractors based in New York, United States
Company intelligence · public preview
Top 25 energy efficiency contractors based in the United Kingdom
RevenueBase records 568 matching company records for energy efficiency contractors based in the United Kingdom, with 12,925 tracked contacts and 4,061 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 16, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 energy efficiency contractors based in the United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | British GASbritishgas.co.uk HQ: Windsor, United KingdomReported employees: 10001+ | Windsor, United Kingdom | 10001+ | Exact match | 9,238 contacts → |
“Taking care of things.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | CFP Energycfp.energy HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 171 contacts → |
“CFP Energy is a leading provider of energy and environmental solutions for industrial and commercial clients.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | TROOtroocost.com HQ: Doxford International Business Park, United KingdomReported employees: 51-200 | Doxford International Business Park, United Kingdom | 51-200 | Exact match | 106 contacts → |
“Managing business energy can be overwhelming.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Sustainable Building Services UK LTDsustainablebuildinguk.com HQ: Skelmersdale, United KingdomReported employees: 51-200 | Skelmersdale, United Kingdom | 51-200 | Exact match | 82 contacts → |
“Are you looking for a specialist retrofit decarbonisation & energy efficiency contractor?” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | ECO Approachecoapproach.co.uk HQ: Beckenham, United KingdomReported employees: 51-200 | Beckenham, United Kingdom | 51-200 | Exact match | 67 contacts → |
“We’re a leading nationwide property services company established in 2013.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | ECO Logic Partnersecologicpartners.co.uk HQ: Team Valley, United KingdomReported employees: 11-50 | Team Valley, United Kingdom | 11-50 | Exact match | 66 contacts → |
“We bring good energy to the table to help you save yours.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Cenergistcenergist.com HQ: Washington, United KingdomReported employees: 201-500 | Washington, United Kingdom | 201-500 | Exact match | 62 contacts → |
“Cenergist is a specialist energy and water efficiency company in the UK and Europe.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Scis Groupscisltd.co.uk HQ: Fareham, United KingdomReported employees: 51-200 | Fareham, United Kingdom | 51-200 | Exact match | 60 contacts → |
“Hello.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Energy Driveenergydrivesystems.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 60 contacts → |
“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 description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Cotswold Energy Groupcotswold.energy HQ: Stonehouse, United KingdomReported employees: 51-200 | Stonehouse, United Kingdom | 51-200 | Exact match | 45 contacts → |
“Secure your greener future with renewable energy solutions!” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Cotopaxi LTDcotopaxienergy.com HQ: White Moss Business Park, United KingdomReported employees: 11-50 | White Moss Business Park, United Kingdom | 11-50 | Exact match | 42 contacts → |
“Cotopaxi Energy is an independent engineering consultancy specialising in utility and carbon reduction.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Brownlow Utilitiesbrownlowutilities.co.uk HQ: Newton-le-willows., United KingdomReported employees: 11-50 | Newton-le-willows., United Kingdom | 11-50 | Exact match | 37 contacts → |
“Brownlow Utilities - the energy and sustainability expert!” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | On-Site Energy LTDon-site.energy HQ: Liverpool, United KingdomReported employees: 11-50 | Liverpool, United Kingdom | 11-50 | Exact match | 28 contacts → |
“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 description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Eclipse Energyeclipseenergy.co.uk HQ: Halifax, United KingdomReported employees: 11-50 | Halifax, United Kingdom | 11-50 | Exact match | 27 contacts → |
“Eclipse Energy are specialists in providing affordable and efficient ways to keep your home warm and dry for less.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | ECO 247eco24-7.co.uk HQ: St Asaph, United KingdomReported employees: 51-200 | St Asaph, United Kingdom | 51-200 | Exact match | 25 contacts → |
“At Eco 247, we are committed to building a greener future through sustainable energy solutions.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Decernadecerna.co.uk HQ: Cramlington, United KingdomReported employees: 11-50 | Cramlington, United Kingdom | 11-50 | Exact match | 23 contacts → |
“Decerna is a specialist commercial sustainability consultancy.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Osborne Energy Limitedosborneenergy.co.uk HQ: Hastings, United KingdomReported employees: 11-50 | Hastings, United Kingdom | 11-50 | Exact match | 22 contacts → |
“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 description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | CT ECO Plusct.eco HQ: Littlehampton, United KingdomReported employees: 11-50 | Littlehampton, United Kingdom | 11-50 | Exact match | 22 contacts → |
“At CT Eco Plus, we deliver trusted, fully turnkey energy efficiency and retrofit solutions across the UK.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | MCL Energy LTDmclenergy.co.uk HQ: Doncaster, United KingdomReported employees: 11-50 | Doncaster, United Kingdom | 11-50 | Exact match | 21 contacts → |
“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 description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Making Energy Greenermakingenergygreener.co.uk HQ: Southport, United KingdomReported employees: 51-200 | Southport, United Kingdom | 51-200 | Exact match | 21 contacts → |
“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 description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Furbnowfurbnow.com HQ: Birmingham, United KingdomReported employees: 11-50 | Birmingham, United Kingdom | 11-50 | Exact match | 21 contacts → |
“Furbnow is the complete solution for planning and delivering home energy projects.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Energy & Technical Services LTDenergy-ts.com HQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 20 contacts → |
“Energy and Technical Services is an expert in energy consulting and service and has been for 25th years.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Osmosis ACDosmosis-acd.com HQ: Chorley, United KingdomReported employees: 11-50 | Chorley, United Kingdom | 11-50 | Exact match | 20 contacts → |
“We employ some of the best Retrofit Assessors and Retrofit Coordinators in the industry.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Carbon Architecturecarbonarchitecture.co.uk HQ: Hampton Hill, United KingdomReported employees: 11-50 | Hampton Hill, United Kingdom | 11-50 | Exact match | 20 contacts → |
“Carbon Architecture has spent the last twelve years helping energy intensive organisations optimise their processes.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | ECO Systems Group LTDecosystemsgroup.co.uk HQ: Harold Wood, United KingdomReported employees: 51-200 | Harold Wood, United Kingdom | 51-200 | Exact match | 18 contacts → |
“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 description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 568 company matches
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Energy efficiency contractors: dataset insights
September 16, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
563 records in the displayed employee bands.
5 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 568 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 16, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for energy efficiency contractors?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many energy efficiency contractors did RevenueBase find based in the United Kingdom?
The saved snapshot records 568 matching company records, 12,925 tracked contacts and 4,061 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 16, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Energy efficiency contractors by geography
- Energy efficiency contractors based in Barcelona, Spain
- Energy efficiency contractors based in Madrid, Spain
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- Energy efficiency contractors based in Houston, United States
- Energy efficiency contractors based in New York, United States
- Energy efficiency contractors based in Australia
- Energy efficiency contractors based in Austria
- Energy efficiency contractors based in Belgium
- Energy efficiency contractors based in Brazil
- Energy efficiency contractors based in Canada
- Energy efficiency contractors based in Czechia
Cite this list
RevenueBase Data Team. Top 25 energy efficiency contractors based in the United Kingdom. Snapshot: September 16, 2026. https://revenuebase.ai/companies/energy-efficiency-contractors/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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