Company lists · Data refreshed September 2026

Top 25 Climate tech accelerators based in the United Kingdom

RevenueBase identified 87 company matches for climate tech accelerators associated with the United Kingdom as of September 2026 and tracks 792 professional contacts across them, including 218 with verified work emails. London is the largest hub.

This list covers company matches for climate tech accelerators 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
87Companies
792Contacts tracked
218Verified emails
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The 25 largest climate tech accelerators based in the United Kingdom

Ranked by team size
Top 25 of 87 company matches for climate tech accelerators 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Sep 19, 202611-5056 contacts →

Exact match

“Arc is a global non‑profit organisation that builds the shared pathways needed to turn climate and resilience ambitions into tangible investment flows.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Sep 19, 202611-5043 contacts →

Exact match

“The reference early stage investor for UK climate innovation.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Sep 19, 20261-1029 contacts →

Exact match

“Most accelerators offer calls, decks, and vague promises.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Sep 19, 202611-5024 contacts →

Exact match

“At CLT, we believe clean technology is essential to building a resilient, competitive, and sustainable economy.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5Exact matchLondon, United KingdomHQ recorded Sep 19, 202611-5023 contacts →

Exact match

“Rapid Innovation Group (RIG) is a commercialisation firm focused on high impact industrial technologies that have a global application where defensibility is primarily based on…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Sep 19, 20261-1019 contacts →

Exact match

“We back founders at pre-seed, seed and series A stages.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Sep 19, 202611-5019 contacts →

Exact match

“A Collaboration Lab for Climate We built London GreenCity to offer a place for people building game changing hardware and software companies in London to find the tools, space…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Sep 19, 202611-5014 contacts →

Exact match

“A Healthier Earth is a climate-tech catalyst delivering profitable, planet-positive projects at speed and scale.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Sep 19, 20261-1013 contacts →

Exact match

“We believe the next generation of unicorns will be those in the business of fixing the planet.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10Exact matchLondon, United KingdomHQ recorded Sep 19, 20261-1012 contacts →

Exact match

“Colbridge Ventures is a venture studio and growth consultancy for early stage climatetech firms.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Sep 19, 20261-1010 contacts →

Exact match

“ENECHANGE Insight promotes innovation and global expansion of clean energy technologies across the globe.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12Exact matchDurham, United KingdomHQ recorded Sep 19, 20261-109 contacts →

Exact match

“The first marketing company in Europe to specialise exclusively in climate tech and adaptation.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Sep 19, 20261-108 contacts →

Exact match

“Blume Equity is a climate-tech growth equity firm with offices in London and Amsterdam focusing on companies driving sustainable outcomes for planet and people.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Sep 19, 20261-108 contacts →

Exact match

“TSP Ventures is an early-stage venture capital firm backing transformative hard science solutions to the most pressing environmental and climate challenges.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Sep 19, 202611-508 contacts →

Exact match

“Sabien Technology Group is a company focused on building a portfolio of solutions, in the heating, cooling and transportation sectors, that deliver immediate reductions in CO2…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16Exact matchAberdeen, United KingdomHQ recorded Sep 19, 20261-108 contacts →

Exact match

“Ventex exists to accelerate net zero so that the world can solve the climate crisis.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Sep 19, 20261-107 contacts →

Exact match

“Eigen Ventures Ltd is a business consulting company based in the United Kingdom specialising in supporting the commercialisation and scale-up of climate tech innovation.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Sep 19, 20261-107 contacts →

Exact match

“350PPM is on a mission to reduce the amount of CO₂ in the atmosphere to 350 parts per million and reduce CO₂e (equivalent greenhouse gases) to similar levels.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19Exact matchLondon, United KingdomHQ recorded Sep 19, 20261-107 contacts →

Exact match

“Opna is building the market infrastructure for critical power equipment: the missing coordination layer between global manufacturing capacity and the operators, developers, and…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20Exact matchLondon, United KingdomHQ recorded Sep 19, 202611-507 contacts →

Exact match

“We are working on one of the largest carbon reduction opportunities on the planet.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21Exact matchLondon, United KingdomHQ recorded Sep 19, 20261-106 contacts →

Exact match

“Seraphim Space Accelerator is the UK’s first dedicated accelerator programme for start-ups in the SpaceTech industry.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22Exact matchAberystwyth, United KingdomHQ recorded Sep 19, 20261-105 contacts →

Exact match

“Nellie exists to design, develop and deploy technologies that mitigate the negative effects of climate change.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23Exact matchLondon, United KingdomHQ recorded Sep 19, 20261-105 contacts →

Exact match

“Tiger Hill Capital is a growth and investment advisory partner to post-seed stage companies with the potential to deliver scalable climate and sustainability solutions.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24Exact matchKing's Cross, United KingdomHQ recorded Sep 19, 202611-505 contacts →

Exact match

“Kiko Ventures is an evergreen venture investor focussed on cleantech/climate tech.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25Exact matchLondon, United KingdomHQ recorded Sep 19, 20261-105 contacts →

Exact match

“Nomea is an innovative climate-tech fund that invests in technologies to reduce CO2 in the atmosphere.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

Showing 25 of 87 climate tech accelerators based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 218 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Climate tech accelerators based in the United Kingdom at a glance

As of Sep 19, 2026
27.5%Verified-email coverage
9.1Average contacts per company
1-10Median size (employees)
72.4%Largest-city concentration · London
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
67
11-50
17
51-200
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 87 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 “climate tech accelerators” 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 218 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 “climate tech accelerators”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many climate tech accelerators are there based in the United Kingdom?

RevenueBase identified 87 company matches for climate tech accelerators 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?

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

Which city has the most climate tech accelerators?

London leads with 63 company records, followed by Oxford (3) and Nottingham (2).

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 218 professional contacts with verified work emails tracked across these 87 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.