Company lists · Data refreshed October 2026

Top 25 Net zero energy contractors based in the United Kingdom

RevenueBase identified 128 company matches for net zero energy contractors associated with the United Kingdom as of October 2026 and tracks 1,877 professional contacts across them, including 777 with verified work emails. London is the largest hub.

This list covers company matches for net zero energy 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 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
128Companies
1,877Contacts tracked
777Verified emails
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The 25 largest net zero energy contractors based in the United Kingdom

Ranked by team size
Top 25 of 128 company matches for net zero energy contractors 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 matchBirmingham, United KingdomHQ recorded Oct 18, 2026201-500336 contacts →

Exact match

“Climate change is without a doubt the greatest challenge we face in these times.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
2Exact matchChilworth, United KingdomHQ recorded Oct 18, 202651-200165 contacts →

Exact match

“Zenergi supports and empowers your journey to net zero.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
3Exact matchBirmingham, United KingdomHQ recorded Oct 18, 202651-200135 contacts →

Exact match

“We’re an ambitious group of architects, designers and makers working throughout the UK and internationally.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Oct 18, 202651-20067 contacts →

Exact match

“Planet Mark is a sustainability certification and net zero provider for organisations and the built environment.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
5Exact matchEdinburgh, United KingdomHQ recorded Oct 18, 202651-20059 contacts →

Exact match

“RSP Consulting Engineers LLP are leaders in sustainable and low energy building services design.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
6Exact matchNewark, United KingdomHQ recorded Oct 18, 202611-5050 contacts →

Exact match

“BE Design was founded in 2013 with a passion to offer truly multi-disciplinary expertise and sustainable design excellence within the built environment.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Oct 18, 202611-5048 contacts →

Exact match

“We are a team of sustainability engineers passionate about creating buildings with a positive impact on the environment and the community.”

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

Exact match

“Quattro Design Architects is a leading Sustainable Architectural practice with offices in Gloucester, London and Cardiff.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
9Exact matchOxfordshire, United KingdomHQ recorded Oct 18, 202651-20040 contacts →

Exact match

“etch Associates are an innovative and collaborative practice formed by David Behan, Richard Turner and David Harris, with 60 years combined experience within the construction…”

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

“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
11Exact matchLondon, United KingdomHQ recorded Oct 18, 202611-5033 contacts →

Exact match

“We’re helping to create a world where every building is truly zero carbon.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
12Exact matchCaterham, United KingdomHQ recorded Oct 18, 202651-20030 contacts →

Exact match

“Our founder, Simon Flatt, started the practice in 2003 to provide sustainable engineering solutions of the highest quality and standard.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Oct 18, 202611-5025 contacts →

Exact match

“Elevate is a leading engineering consultancy transforming urban infrastructure to revolutionise energy production and consumption.”

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

Exact match

“DKI Consulting are Sustainable Building Services Consulting Engineers based in Edinburgh & Manchester, with projects across the UK.”

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

Exact match

“Vector Design has achieved a reputation for high quality and value in an ever competitive and technically challenging market place.”

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 matchGlasgow, United KingdomHQ recorded Oct 18, 202611-5018 contacts →

Exact match

“We provide a full range of architectural and design services, offering net zero carbon designs on all projects from large-scale masterplanning through to individual building…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
18Exact matchGlasgow, United KingdomHQ recorded Oct 18, 20261-1018 contacts →

Exact match

“Design Me have a holistic, pro-active and innovative approach to low energy building services design, our expert understanding of building physics allows us to help design teams…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
19Exact 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
20Exact matchLondon, United KingdomHQ recorded Oct 18, 202611-5012 contacts →

Exact match

“At Henriksen Studio, our mission is to enhance the performance of both new and existing buildings.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
21Exact matchSix Mile Bottom, United KingdomHQ recorded Oct 18, 202651-20012 contacts →

Exact match

“Creating sustainable, net-zero spaces to enable a better tomorrow for generations to come.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
22Exact matchOxfordshire, United KingdomHQ recorded Oct 18, 202611-5011 contacts →

Exact match

“Beyond Carbon Associates is a design and engineering consultancy founded in 2022 by Dr.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
23Exact matchWashington, United KingdomHQ recorded Oct 18, 202611-5010 contacts →

Exact match

“Flowing Energy Solutions are focused on creating a greener future by reducing each homes carbon footprint.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
24Exact matchLondon, United KingdomHQ recorded Oct 18, 202611-5010 contacts →

Exact match

“We design mechanical and electrical systems, advise on all aspects of energy, carbon reduction and building physics.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
25Exact matchLewes, United KingdomHQ recorded Oct 18, 20261-109 contacts →

Exact match

“In practice since 1994, BakerBrown designs beautiful homes, community buildings, and pieces of city – both in the UK and abroad.”

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

Showing 25 of 128 net zero energy contractors based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 777 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Net zero energy contractors based in the United Kingdom at a glance

As of Oct 18, 2026
41.4%Verified-email coverage
14.7Average contacts per company
1-10Median size (employees)
25.8%Largest-city concentration · London
Oct 18, 2026Page data refreshed

Companies by employee count

1-10
79
11-50
34
51-200
11
201-500
3

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 128 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 energy 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 777 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 energy contractors 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 energy contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many net zero energy contractors are there based in the United Kingdom?

RevenueBase identified 128 company matches for net zero energy contractors 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?

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

Which city has the most net zero energy contractors?

London leads with 33 company records, followed by Glasgow (5) and Bristol (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 777 professional contacts with verified work emails tracked across these 128 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.