Company lists · Data refreshed November 2026

Top 25 Home performance contractors based in the United Kingdom

RevenueBase identified 147 company matches for home performance contractors associated with the United Kingdom as of November 2026 and tracks 1,095 professional contacts across them, including 204 with verified work emails. London is the largest hub.

This list covers company matches for home performance 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 November 6, 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 Nov 6, 2026 How this list was built
147Companies
1,095Contacts tracked
204Verified emails
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The 25 largest home performance contractors based in the United Kingdom

Ranked by team size
Top 25 of 147 company matches for home performance contractors based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchBarking, United KingdomHQ recorded Nov 6, 202651-20053 contacts →

Exact match

“IZ Energy is pioneering a sustainable future.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchIrvine, United KingdomHQ recorded Nov 6, 202651-20043 contacts →

Exact match

“At Green Home Systems, we deliver whole-house retrofit solutions that make homes warmer, more energy efficient, and lower cost to run.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchFareham, United KingdomHQ recorded Nov 6, 202651-20041 contacts →

Exact match

“Hello.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Nov 6, 202611-5024 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 · Nov 6, 2026 · View company records in RevenueBase
5Exact matchStockton-on-tees, United KingdomHQ recorded Nov 6, 202651-20023 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 · Nov 6, 2026 · View company records in RevenueBase
6Exact matchBirmingham, United KingdomHQ recorded Nov 6, 202611-5017 contacts →

Exact match

“Furbnow is the complete solution for planning and delivering home energy projects.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchDoncaster, United KingdomHQ recorded Nov 6, 202611-5014 contacts →

Exact match

“We are a highly skilled, independent installation company based in Doncaster, South Yorkshire.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchBarking And Dagenham, United KingdomHQ recorded Nov 6, 202611-5013 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 · Nov 6, 2026 · View company records in RevenueBase
9Exact matchSheffield, United KingdomHQ recorded Nov 6, 202611-5013 contacts →

Exact match

“We are Urban Renewable Power (URP), experts in providing energy efficiency measures.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchOld Hatfield, United KingdomHQ recorded Nov 6, 202611-5012 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 · Nov 6, 2026 · View company records in RevenueBase
11Exact matchHarlow, United KingdomHQ recorded Nov 6, 202611-5011 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 · Nov 6, 2026 · View company records in RevenueBase
12Exact matchClitheroe, United KingdomHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“EcoGiants hold PAS accreditations for all the following measures and are Trustmark registered through the IAA.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchBirmingham, United KingdomHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“Simply Eco Ltd was established to assist people to gain access to Carbon Saving and Efficiency Measures under the government Energy Company Obligation (ECO) and Green Deal Schemes.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchSt Helens, United KingdomHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“Invictus Energy Group is transforming homes across the North West, making them warmer, more energy-efficient, and cheaper to run.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchBristol, United KingdomHQ recorded Nov 6, 20261-109 contacts →

Exact match

“SuSy is a free-to-use tool for householders who want to want to make their homes warmer, greener and cheaper to run.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchLlanelli, United KingdomHQ recorded Nov 6, 202611-509 contacts →

Exact match

“We offer grants for boiler replacements, air source heat pumps, solar PV and insulation measures.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchPirbright, United KingdomHQ recorded Nov 6, 202611-508 contacts →

Exact match

“Energy Specifics is a PAS 2030 installer specialising in energy efficiency building upgrades.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchWilmslow, United KingdomHQ recorded Nov 6, 202651-2008 contacts →

Exact match

“Warma UK make it easy for people to access energy efficiency grants for home upgrades like solar energy, heating, and insulation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchLoughborough, United KingdomHQ recorded Nov 6, 202611-506 contacts →

Exact match

“Our core goal is to improve the efficiency of UK housing stock, by ‘retrofitting’ inefficient homes, helping customers reduce energy costs and improve their standard of living.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchColchester, United KingdomHQ recorded Nov 6, 20261-106 contacts →

Exact match

“At 1st Homes we believe that our unrivaled years of experience combined with the most up to date technology and the finest products available in the market place today, coupled…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchLeeds, United KingdomHQ recorded Nov 6, 202611-505 contacts →

Exact match

“A more comfortable home starts with the space you already have.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchPenarth, United KingdomHQ recorded Nov 6, 20261-105 contacts →

Exact match

“Kalm was established to help property owners optimise the energy efficiency of their buildings through the most cost effective measures.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchSt Lawrence, United KingdomHQ recorded Nov 6, 20261-105 contacts →

Exact match

“The aim of isle-eco is to aid homes and businesses in using energy efficient and environmentally friendly systems to provide heat, hot water and electricity.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchTelford, United KingdomHQ recorded Nov 6, 202611-505 contacts →

Exact match

“Energy efficiency experts Established in 1989, SGEC is a fully accredited energy efficiency provider and insulation installer based in Telford, Shropshire.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchNottingham, United KingdomHQ recorded Nov 6, 202611-504 contacts →

Exact match

“At Cobalt Carbon Free we design, build, renovate, innovate, and promote energy efficient, low carbon, home improvements and developments to like-minded homeowners.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 147 home performance contractors based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 204 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Home performance contractors based in the United Kingdom at a glance

As of Nov 6, 2026
18.6%Verified-email coverage
7.4Average contacts per company
11-50Median size (employees)
9.5%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
61
11-50
63
51-200
17
201-500
2
1,001-5,000
1

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 147 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 “home performance 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 204 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 November 6, 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 “home performance contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many home performance contractors are there based in the United Kingdom?

RevenueBase identified 147 company matches for home performance contractors associated with the United Kingdom as of November 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?

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

Which city has the most home performance contractors?

London leads with 14 company records, followed by Bristol (4) and Oldbury (4).

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 204 professional contacts with verified work emails tracked across these 147 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 November 6, 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.