Company lists · Data verified August 2026

Top 25 Clean tech venture capital companies based in London, United Kingdom

Name: Clean tech venture capital companies based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 83 companies tracked

There are 83 clean tech venture capital companies headquartered in London, United Kingdom (RevenueBase, August 2026). RevenueBase tracks 750 professional contacts across them, including 359 with verified work emails and 61 with mobile numbers. London is the largest hub.

This list covers clean tech venture capital companies headquartered in London, United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

83Companies

750Contacts tracked

359Verified emails

61Mobile numbers

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The 25 largest clean tech venture capital companies based in London, United Kingdom

Ranked by team size

Top 25 of 83 clean tech venture capital companies based in London, United Kingdom, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Octopus Energy Generation	London	201-500	152	104
2	Green Angel Ventures	London	11-50	42	9
3	National Energy	London	51-200	40	26
4	AP Ventures	London	11-50	30	21
5	RAW Ventures	London	11-50	29	11
6	ETF Partners	London	11-50	25	17
7	Carbon Limiting Technologies	London	11-50	24	15
8	Pash Global	London	11-50	22	9
9	Transition Ventures	London	1-10	19	14
10	Inmotion Ventures	London	11-50	19	9
11	Clean Growth Fund	London	1-10	13	11
12	Arieli Group	London	11-50	13	8
13	UNA Terra Early Growth Fund	London	1-10	13	5
14	Audacy	London	11-50	12	5
15	Buckthorn Partners LLP	London	1-10	11	7
16	Susten	London	11-50	11	4
17	Telis Energy	London	1-10	11	4
18	Futuraiser	London	11-50	10	3
19	First Imagine	London	1-10	9	6
20	Blume Equity	London	1-10	8	8
21	Volta Circle	London	1-10	8	3
22	Conduit Ventures Limited	London	1-10	8	2
23	Susgen	London	1-10	7	6
24	Ecopragma Capital LLP	London	1-10	7	5
25	Ekta Partners	London	1-10	7	4

Showing 25 of 83 clean tech venture capital companies based in London, United Kingdom

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Clean tech venture capital companies based in London, United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 83 HQs

61Contacts with mobile numbers

3Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

Clean tech venture capital companies by metro in the United Kingdom

Metro	Companies
Clean tech venture capital companies in London	83
Clean tech venture capital companies in Manchester	4
Clean tech venture capital companies in Oxford	3
Clean tech venture capital companies in Bristol	3
Clean tech venture capital companies in Edinburgh	2
Clean tech venture capital companies in City Of London	2
Clean tech venture capital companies in St Peter Port	1

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “clean tech venture capital companies”, with match quality audited by blind human judging, and headquartered in London, United Kingdom.
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: Contact records re-verify on a rolling cadence; 3 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many clean tech venture capital companies are there based in London, United Kingdom?

There are 83 clean tech venture capital companies headquartered in London, United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

Octopus Energy Generation, headquartered in London, tops this list with the largest team on record.

Which city has the most clean tech venture capital companies?

London leads with 83 headquartered companies, followed by Manchester (4) and Oxford (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 359 verified decision-maker contacts tracked across these 83 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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Clean tech venture capital companies by geography

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.