Company lists · Data refreshed September 2026

Top 25 Smart city decarbonization companies based in the United Kingdom

RevenueBase identified 257 company matches for smart city decarbonization companies associated with the United Kingdom as of September 2026 and tracks 12,835 professional contacts across them, including 5,405 with verified work emails. London is the largest hub.

This list covers company matches for smart city decarbonization 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 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 16, 2026 How this list was built
257Companies
12,835Contacts tracked
5,405Verified emails
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The 25 largest smart city decarbonization companies based in the United Kingdom

Ranked by team size
Top 25 of 257 company matches for smart city decarbonization companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 16, 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 matchGlasgow, United KingdomHQ recorded Sep 16, 20261,001-5,000766 contacts →

Exact match

“Through our range of innovative energy solutions, we are delivering the future of smart energy – working closely with private and public sector partners to decarbonise the UK…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
2Exact matchWalton-on-thames, United KingdomHQ recorded Sep 16, 2026201-500658 contacts →

Exact match

“We are passionate about driving sustainable change for our planet.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Sep 16, 2026201-500171 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
4Exact matchBristol, United KingdomHQ recorded Sep 16, 202651-200142 contacts →

Exact match

“Optimised exists to accelerate the shift to a low-carbon future by making energy management work; commercially, operationally and sustainably.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
5Exact matchLondon, United KingdomHQ recorded Sep 16, 202651-200125 contacts →

Exact match

“We are Bring Energy.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Sep 16, 202651-200115 contacts →

Exact match

“At ZTP, we’re committed to accelerating the transition to a more sustainable future by reducing the negative impact of human activity on our planet - ecologically, financially…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Sep 16, 202651-200109 contacts →

Exact match

“Ecolibrium is a sustainability tech company that empowers people to make better decisions based on proven data-driven ML algorithms through continuous monitoring, analysis and…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Sep 16, 202651-20098 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 · Sep 16, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Sep 16, 2026201-50093 contacts →

Exact match

“First Mode develops and manufactures decarbonization solutions for heavy industry partners dedicated to the clean energy future.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
10Exact matchLondon, United KingdomHQ recorded Sep 16, 202651-20086 contacts →

Exact match

“VEV helps organisations deliver on their carbon reduction ambitions with an end-to-end fleet electrification solution that integrates across vehicles, charging infrastructure and…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
11Exact matchGateshead, United KingdomHQ recorded Sep 16, 202651-20081 contacts →

Exact match

“We enable businesses to succeed in the environmental components of their ESG strategies through comprehensive net zero consulting services and ground-breaking carbon and energy…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
12Exact matchMilton Keynes, United KingdomHQ recorded Sep 16, 202651-20069 contacts →

Exact match

“TEAM is the UK’s leading supplier of carbon and energy management solutions committed to driving the efficiency and sustainability of energy consumption and environmental…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Sep 16, 2026201-50069 contacts →

Exact match

“EcoAct is now SE Advisory Services.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
14Exact matchExeter, United KingdomHQ recorded Sep 16, 202651-20068 contacts →

Exact match

“CARBON FIRST ENGINEERING City Science is the first engineering company dedicated to decarbonisation.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
15Exact matchSandhurst, United KingdomHQ recorded Sep 16, 202611-5049 contacts →

Exact match

“Carbonxgen is a leading consultancy that specialises in solving complex energy and sustainability challenges.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
16Exact matchLondon, United KingdomHQ recorded Sep 16, 202651-20045 contacts →

Exact match

“Zevero is a leading carbon management platform that empowers organisations to measure, reduce, and report their carbon emissions with precision and efficiency.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
17Exact matchWrotham Heath, United KingdomHQ recorded Sep 16, 202651-20043 contacts →

Exact match

“Carbon3 helps local authorities, social housing providers, businesses, and developers cut carbon at scale.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
18Exact matchCambridge, United KingdomHQ recorded Sep 16, 202611-5039 contacts →

Exact match

“Advanced Infrastructure was formed around the shared frustration among the founders that decarbonisation shouldn’t be blocked by something as simple as data access and visibility.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
19Exact matchNeath, United KingdomHQ recorded Sep 16, 202611-5038 contacts →

Exact match

“Vortex is a dynamic and market-leading company at the forefront of smart city technologies.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
20Exact matchLondon, United KingdomHQ recorded Sep 16, 202611-5035 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 · Sep 16, 2026 · View company records in RevenueBase
21Exact matchLondon, United KingdomHQ recorded Sep 16, 202611-5033 contacts →

Exact match

“ANGARA turns $100 billion of invisible fouling losses into measurable profit through Proactive Fouling Management in industrial heat transfer with paired AI analytics and patented…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Sep 16, 202611-5032 contacts →

Exact match

“ELIRE pioneers innovative solutions that enable our clients and partners to reach their decarbonisation and net zero goals.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
23Exact matchBasingstoke, United KingdomHQ recorded Sep 16, 202611-5029 contacts →

Exact match

“We help organisations meet their business objectives by enabling them to reduce carbon emissions, energy, and costs whilst developing robust environmental credentials.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
24Exact matchBillingshurst, United KingdomHQ recorded Sep 16, 202611-5026 contacts →

Exact match

“Welcome to Energys Group.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
25Exact matchTeam Valley, United KingdomHQ recorded Sep 16, 202611-5022 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 · Sep 16, 2026 · View company records in RevenueBase

Showing 25 of 257 smart city decarbonization companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 5,405 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Smart city decarbonization companies based in the United Kingdom at a glance

As of Sep 16, 2026
42.1%Verified-email coverage
49.9Average contacts per company
1-10Median size (employees)
33.9%Largest-city concentration · London
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
135
11-50
91
51-200
19
201-500
6
1,001-5,000
2
5,001-10,000
1
10001+
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 257 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 “smart city decarbonization 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 5,405 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 “smart city decarbonization companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many smart city decarbonization companies are there based in the United Kingdom?

RevenueBase identified 257 company matches for smart city decarbonization companies 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?

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

Which city has the most smart city decarbonization companies?

London leads with 87 company records, followed by Manchester (8) and Cardiff (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 5,405 professional contacts with verified work emails tracked across these 257 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.

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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.