Company lists · Data refreshed September 2026

Top 25 Weatherization contractors based in the United Kingdom

Name: Weatherization contractors based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 468 companies tracked

RevenueBase identified 468 company matches for weatherization contractors associated with the United Kingdom as of September 2026 and tracks 3,160 professional contacts across them, including 881 with verified work emails. London is the largest hub.

This list covers company matches for weatherization 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 19, 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 Sep 19, 2026 How this list was built

468Companies

3,160Contacts tracked

881Verified emails

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The 25 largest weatherization contractors based in the United Kingdom

Ranked by team size

Top 25 of 468 company matches for weatherization contractors based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 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	Correct Contract Services CCS	Exact match	Andover, United KingdomHQ recorded Sep 19, 2026	201-500	108 contacts →
	Exact match “Correct Contract Services (CCS) is a trusted main contractor for compliance and energy services, expertly serving social housing landlords across the UK.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2	City Energy Network	Exact match	Cardiff, United KingdomHQ recorded Sep 19, 2026	51-200	98 contacts →
	Exact match “At City Energy Network, we help households across the UK improve energy efficiency, cut bills, and reduce carbon emissions.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3	Purdy Part Of Sureserve	Exact match	London, United KingdomHQ recorded Sep 19, 2026	201-500	85 contacts →
	Exact match “Who are we?” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4	Next Energy	Exact match	Knowsley, United KingdomHQ recorded Sep 19, 2026	51-200	68 contacts →
	Exact match “Established in 2016, we have grown to become one of the most reputable and reliable specialists within the renewable, heating, and insulation sectors in the United Kingdom.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5	ECO Approach	Exact match	Beckenham, United KingdomHQ recorded Sep 19, 2026	51-200	67 contacts →
	Exact match “We’re a leading nationwide property services company established in 2013.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6	Scis Group	Exact match	Fareham, United KingdomHQ recorded Sep 19, 2026	51-200	60 contacts →
	Exact match “Hello.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7	IZ Energy Services LTD	Exact match	Barking, United KingdomHQ recorded Sep 19, 2026	51-200	57 contacts →
	Exact match “IZ Energy is pioneering a sustainable future.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8	Green Home Systems	Exact match	Irvine, United KingdomHQ recorded Sep 19, 2026	51-200	47 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 · Sep 19, 2026 · View company records in RevenueBase
9	Sureserve Energy Services North	Exact match	Brighouse, United KingdomHQ recorded Sep 19, 2026	1,001-5,000	43 contacts →
	Exact match “Sureserve Energy Services North is a leading national installer of insulation, heating solutions and renewable technologies.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10	Homelogic	Exact match	Southampton, United KingdomHQ recorded Sep 19, 2026	51-200	38 contacts →
	Exact match “Homelogic®, based in Southampton, Hampshire, are an innovative, forward-thinking company dedicated to bringing eco-friendly, cost effective energy saving solutions to the homes…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11	Quora Group	Exact match	North Shields, United KingdomHQ recorded Sep 19, 2026	51-200	33 contacts →
	Exact match “Professional service supplying, installing and maintaining energy efficient HVAC systems.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12	CWG Group LTD	Exact match	Stevenage, United KingdomHQ recorded Sep 19, 2026	11-50	32 contacts →
	Exact match “CWG Group is your dedicated partner in creating energy-efficient, sustainable, and environmentally responsible solutions that stand the test of time.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13	Eclipse Energy	Exact match	Halifax, United KingdomHQ recorded Sep 19, 2026	11-50	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 19, 2026 · View company records in RevenueBase
14	ECO 247	Exact match	St Asaph, United KingdomHQ recorded Sep 19, 2026	51-200	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 19, 2026 · View company records in RevenueBase
15	Green Improve	Exact match	Blackburn, United KingdomHQ recorded Sep 19, 2026	11-50	24 contacts →
	Exact match “At Green Improve, we specialise in providing solutions for renewable heating and insulation installations.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16	Thrift Energy LTD	Exact match	Gateshead, United KingdomHQ recorded Sep 19, 2026	51-200	23 contacts →
	Exact match “Thrift Energy is as a leading installer of Insulation, Heating, Electrical and Renewable Energy technologies.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17	Osborne Energy Limited	Exact match	Hastings, United KingdomHQ recorded Sep 19, 2026	11-50	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 19, 2026 · View company records in RevenueBase
18	CT ECO Plus	Exact match	Littlehampton, United KingdomHQ recorded Sep 19, 2026	11-50	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 19, 2026 · View company records in RevenueBase
19	Aerocool LTD	Exact match	Burscough, United KingdomHQ recorded Sep 19, 2026	11-50	21 contacts →
	Exact match “Established in 1989 Aerocool Limited has become one of the North West's best established air conditioning contractors.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20	Furbnow	Exact match	Birmingham, United KingdomHQ recorded Sep 19, 2026	11-50	21 contacts →
	Exact match “Furbnow is the complete solution for planning and delivering home energy projects.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21	ECO Systems Group LTD	Exact match	Harold Wood, United KingdomHQ recorded Sep 19, 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 · Sep 19, 2026 · View company records in RevenueBase
22	Elite Energy	Exact match	Stockton-on-tees, United KingdomHQ recorded Sep 19, 2026	51-200	18 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 · Sep 19, 2026 · View company records in RevenueBase
23	Jones Weatherproofing	Exact match	Walsall, United KingdomHQ recorded Sep 19, 2026	51-200	17 contacts →
	Exact match “The globally trusted partner for weatherproofing solutions in construction.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24	RMS Energy Solutions	Exact match	Coventry, United KingdomHQ recorded Sep 19, 2026	11-50	17 contacts →
	Exact match “Providing domestic energy efficiency solutions to save our customers money and save the environment.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25	Blue Cooling LTD	Exact match	Kendal, United KingdomHQ recorded Sep 19, 2026	11-50	17 contacts →
	Exact match “Refrigeration and Air Conditioning Contractors Specialists in Service Installation and Maintenance of Refrigeration Systems.” Recorded in the RevenueBase company graph · Sep 19, 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 “weatherization 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 468 weatherization contractors based in the United Kingdom

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Weatherization contractors based in the United Kingdom at a glance

As of Sep 19, 2026

27.9%Verified-email coverage

6.8Average contacts per company

11-50Median size (employees)

6.6%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

202

11-50

200

51-200

201-500

501-1,000

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 468 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 “weatherization 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 881 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 19, 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 “weatherization contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many weatherization contractors are there based in the United Kingdom?

RevenueBase identified 468 company matches for weatherization 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?

Correct Contract Services CCS tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most weatherization contractors?

London leads with 31 company records, followed by Birmingham (12) and Glasgow (10).

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 881 professional contacts with verified work emails tracked across these 468 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 19, 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.