Company lists · Data refreshed October 2026

Top 25 Net zero building conversion companies based in the United Kingdom

RevenueBase identified 208 company matches for net zero building conversion companies associated with the United Kingdom as of October 2026 and tracks 1,993 professional contacts across them, including 775 with verified work emails. London is the largest hub.

This list covers company matches for net zero building conversion 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 18, 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 18, 2026 How this list was built
208Companies
1,993Contacts tracked
775Verified emails
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The 25 largest net zero building conversion companies based in the United Kingdom

Ranked by team size
Top 25 of 208 company matches for net zero building conversion companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 18, 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 matchBourne End, United KingdomHQ recorded Oct 18, 202651-200165 contacts →

Exact match

“Trailblazing the way to net zero smart buildings Our cutting-edge PROActiv Solutions enhance the health, energy efficiency and sustainability of UK businesses and commercial…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
2Exact matchBristol, United KingdomHQ recorded Oct 18, 2026201-500111 contacts →

Exact match

“We are a leading provider of retrofit residential decarbonisation across the UK.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Oct 18, 202651-20096 contacts →

Exact match

“eEnergy (AIM: EAAS) is a UK-based Energy-as-a-Service (EaaS) provider, funding and delivering energy-saving and energy-generating solutions across multi-site public sector and…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Oct 18, 202651-20074 contacts →

Exact match

“Think Outside The Grid.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
5Exact matchStonehouse, United KingdomHQ recorded Oct 18, 202651-20047 contacts →

Exact match

“Secure your greener future with renewable energy solutions!”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
6Exact matchWhiteley, United KingdomHQ recorded Oct 18, 202611-5043 contacts →

Exact match

“We provide a one-stop-shop of sustainable technology solutions to accelerate the journey to net-zero.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
7Exact matchIrvine, United KingdomHQ recorded Oct 18, 202651-20042 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 · Oct 18, 2026 · View company records in RevenueBase
8Exact matchDoncaster, United KingdomHQ recorded Oct 18, 202651-20041 contacts →

Exact match

“Effective Home was established in 2016 to help homeowners make their homes more energy efficient, save money and reduce their carbon footprint.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Oct 18, 202611-5033 contacts →

Exact match

“Envision is a specialist sustainability, energy and net zero design consultancy offering strategic and technical advice within the built environment and to businesses wishing to…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
10Exact matchLondon, United KingdomHQ recorded Oct 18, 202611-5033 contacts →

Exact match

“Founded in 2010, Syzygy is the leading specialist low carbon technology consultancy for the real estate sector.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
11Exact matchFareham, United KingdomHQ recorded Oct 18, 202651-20031 contacts →

Exact match

“Hello.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
12Exact matchChippenham, United KingdomHQ recorded Oct 18, 202611-5024 contacts →

Exact match

“The zero emission alternative to the gas combi boiler”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
13Exact matchTeam Valley, United KingdomHQ recorded Oct 18, 202611-5021 contacts →

Exact match

“Green Leaf Engineering are a renewable energy contractor who specialise in the de-carbonisation of commercial properties throughout the UK.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Oct 18, 202611-5020 contacts →

Exact match

“At AMPYR Distributed Energy we design, build, own, and operate clean energy technologies that help our customers go green and reduce their energy costs.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
15Exact matchCardiff, United KingdomHQ recorded Oct 18, 202611-5020 contacts →

Exact match

“At Nuvolt we advise, design, construct, maintain and optimise low carbon technology solutions.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
16Exact matchNorwich, United KingdomHQ recorded Oct 18, 20261-1020 contacts →

Exact match

“We're Beattie, a design and technology company that delivers Passivhaus and net zero solutions for the built environment.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
17Exact matchSt Asaph, United KingdomHQ recorded Oct 18, 202651-20019 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 18, 2026 · View company records in RevenueBase
18Exact matchHarold Wood, United KingdomHQ recorded Oct 18, 202651-20018 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 18, 2026 · View company records in RevenueBase
19Exact matchFarnham, United KingdomHQ recorded Oct 18, 202611-5017 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 18, 2026 · View company records in RevenueBase
20Exact matchLeeds, United KingdomHQ recorded Oct 18, 202611-5017 contacts →

Exact match

“We are a national company, which still maintains the feel of a family run business.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
21Exact matchWickham, United KingdomHQ recorded Oct 18, 2026201-50016 contacts →

Exact match

“Sydenhams Timber Engineering design, manufacture and construct innovative, net zero ready timber frame buildings.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
22Exact matchNewry, United KingdomHQ recorded Oct 18, 202611-5015 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
23Exact matchBristol, United KingdomHQ recorded Oct 18, 202611-5014 contacts →

Exact match

“At Value Optimised Retrofit (VOR), we are committed to empowering communities and businesses with affordable and sustainable retrofit solutions, transforming the built environment…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
24Exact matchBlackburn, United KingdomHQ recorded Oct 18, 202611-5014 contacts →

Exact match

“BGreenn is a renewable energy company that installs low-carbon technologies in domestic homes and commercial and public companies throughout the UK and India.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
25Exact matchYork, United KingdomHQ recorded Oct 18, 202651-20013 contacts →

Exact match

“In November 2024, Green Building Renewables rebranded to 21°.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase

Showing 25 of 208 net zero building conversion companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 775 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Net zero building conversion companies based in the United Kingdom at a glance

As of Oct 18, 2026
38.9%Verified-email coverage
9.6Average contacts per company
11-50Median size (employees)
17.3%Largest-city concentration · London
Oct 18, 2026Page data refreshed

Companies by employee count

1-10
102
11-50
79
51-200
22
201-500
3
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 208 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 “net zero building conversion 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 775 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 18, 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.

Net zero building conversion companies by metro

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 “net zero building conversion companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many net zero building conversion companies are there based in the United Kingdom?

RevenueBase identified 208 company matches for net zero building conversion 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?

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

Which city has the most net zero building conversion companies?

London leads with 36 company records, followed by Manchester (7) and Bristol (5).

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 775 professional contacts with verified work emails tracked across these 208 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 18, 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.