# Cleantech investors based in London (2026 list)

> 64 cleantech investors based in London, 95% active in the last 12 months. Led by Index Ventures, Antler, Crowdcube. Ranked by what they funded.

Source: https://millionrounds.com/lists/cleantech-investors-based-in-london (Millionrounds; every figure on the page links to its filing or article)

[Investor Lists](https://millionrounds.com/lists)

# Cleantech investors based in London

Updated 7 November 2026

Firms with an address in London that we have watched back a cleantech company in the last two years.

[See all 64 *→*](https://millionrounds.com/login?join=1&next=%2Fapp%2Finvestor-lists%2Fcleantech-investors-based-in-london)The top 25

**64** investors on the list No change this week

**1,124** cheques in 12 months *-8%* against the market

**$7.5M** median round they joined *-6%* against the market median

**95%** wrote a cheque in 12 months

**72%** have led a round

## The Top 25

Ordered by cheques observed, never by anything anyone paid for

Deploying now (25)

- 1 [Index Ventures](https://millionrounds.com/fund/index-ventures) *Deploying now* VC firm · United Kingdom **1,027** **$31M** median round **Nov 2026** last seen
- 2 [Antler](https://millionrounds.com/fund/antler) *Deploying now* VC firm · United Kingdom **729** **$1M** median round **Nov 2026** last seen
- 3 [Crowdcube](https://millionrounds.com/fund/crowdcube) *Deploying now* VC firm · United Kingdom **715** **$615K** median round **Sept 2026** last seen
- 4 [Seedcamp](https://millionrounds.com/fund/seedcamp) *Deploying now* VC firm · United Kingdom **519** **$5M** median round **Nov 2026** last seen
- 5 [GSR](https://millionrounds.com/fund/gsr) *Deploying now* VC firm · United Kingdom **453** **$6M** median round **Jun 2026** last seen
- 6 [SFC Capital](https://millionrounds.com/fund/sfc-capital) *Deploying now* Angel network · United Kingdom **379** **$431K** median round **Nov 2026** last seen
- 7 [Balderton Capital](https://millionrounds.com/fund/balderton-capital) *Deploying now* VC firm · United Kingdom **368** **$30M** median round **Oct 2026** last seen
- 8 [Octopus Ventures](https://millionrounds.com/fund/octopus-ventures) *Deploying now* VC firm · United Kingdom **355** **$10M** median round **Oct 2026** last seen
- 9 [Entrepreneur First](https://millionrounds.com/fund/entrepreneurs-first) *Deploying now* Accelerator · United Kingdom **332** **$3.6M** median round **Oct 2026** last seen
- 10 [Northzone](https://millionrounds.com/fund/northzone) *Deploying now* VC firm · United Kingdom **240** **$22M** median round **Oct 2026** last seen
- 11 [Parkwalk](https://millionrounds.com/fund/parkwalk) *Deploying now* VC firm · United Kingdom **209** **$6.9M** median round **Oct 2026** last seen
- 12 [Ascension](https://millionrounds.com/fund/ascension) *Deploying now* VC firm · United Kingdom **190** **$3.4M** median round **Oct 2026** last seen
- 13 [SoftBank Vision Fund](https://millionrounds.com/fund/softbank-investment-advisers) *Deploying now* VC firm · United Kingdom **179** **$130M** median round **Sept 2026** last seen
- 14 [IP Group](https://millionrounds.com/fund/ip-group) *Deploying now* VC firm · United Kingdom **174** **$9.1M** median round **Oct 2026** last seen
- 15 [IQ Capital](https://millionrounds.com/fund/iq-capital) *Deploying now* VC firm · United Kingdom **165** **$17M** median round **Oct 2026** last seen
- 16 [Fuel Ventures](https://millionrounds.com/fund/fuel-ventures) *Deploying now* VC firm · United Kingdom **163** **$1.9M** median round **Oct 2026** last seen
- 17 [Foresight Group](https://millionrounds.com/fund/foresight-group) *Deploying now* Private equity · United Kingdom **132** **$4M** median round **Oct 2026** last seen
- 18 [Barclays Ventures](https://millionrounds.com/fund/barclays-ventures) *Deploying now* Corporate VC · United Kingdom **128** **$23M** median round **Oct 2026** last seen
- 19 [Future Planet Capital](https://millionrounds.com/fund/future-planet-capital) *Deploying now* VC firm · United Kingdom **126** **$3.6M** median round **Sept 2026** last seen
- 20 [Firstminute Capital](https://millionrounds.com/fund/firstminute-capital) *Deploying now* VC firm · United Kingdom **123** **$6.4M** median round **Oct 2026** last seen
- 21 [European Union](https://millionrounds.com/fund/european-union) *Deploying now* Government · United Kingdom **118** **$2.3M** median round **Sept 2026** last seen
- 22 [Better Capital](https://millionrounds.com/fund/better-capital) *Deploying now* Private equity · United Kingdom **97** **$2.5M** median round **Oct 2026** last seen
- 23 [Ada Ventures](https://millionrounds.com/fund/ada-ventures) *Deploying now* VC firm · United Kingdom **94** **$3.2M** median round **Oct 2026** last seen
- 24 [European Bank for Reconstruction and Development](https://millionrounds.com/fund/ebrd) *Deploying now* Private equity · United Kingdom **91** **$35M** median round **Nov 2026** last seen
- 25 [British International Investment](https://millionrounds.com/fund/british-international-investment-bii) *Deploying now* Government · United Kingdom **84** **$20M** median round **Nov 2026** last seen

**39 more on this list**

All 64 are in the app, with filters for stage, sector and market. A free account shows 10 per search, Pro up to 1,000.

[See the whole list *→*](https://millionrounds.com/login?join=1&next=%2Fapp%2Finvestor-lists%2Fcleantech-investors-based-in-london)

## The Newest Cheques

Rounds this list's investors joined most recently

- **5** Nov **[Claimlane](https://millionrounds.com/company/claimlane)** Series A · $6.3M *With* [Verb Ventures](https://millionrounds.com/fund/verb-ventures)
- **5** Nov **[Granit](https://millionrounds.com/company/granit)** Seed · $6M *Led by* [Seedcamp](https://millionrounds.com/fund/seedcamp)
- **5** Nov **[Nayara](https://millionrounds.com/company/nayara)** Pre-seed · $522K *Led by* [SFC Capital](https://millionrounds.com/fund/sfc-capital)
- **5** Nov **[Pliant](https://millionrounds.com/company/pliant)** Series C · $80M *With* [Molten Ventures](https://millionrounds.com/fund/molten-ventures)
- **5** Nov **[altM](https://millionrounds.com/company/altm)** Series A · $10M *Led by* [Rainmatter](https://millionrounds.com/fund/rainmatter)
- **4** Nov **[Enza](https://millionrounds.com/company/enza)** Seed · $6M *With* [British International Investment](https://millionrounds.com/fund/british-international-investment-bii)

## Stages This Year

986 rounds

- Seed **23%**
- Pre-seed **16%**
- Series A **14%**
- Venture **13%**
- Series B **8%**
- Other **26%**

## What They Backed

Sectors, last 12 months

- AI **378**
- Energy **62**
- Fintech **61**
- Healthcare **54**
- Biotech **52**
- Cleantech **46**

## Cheques by Quarter

Led Joined

335 Q1 25

349 Q2 25

302 Q3 25

346 Q4 25

336 Q1 26

305 Q2 26

268 Q3 26

76 Q4 26

The last bar is the quarter still running.

## Lists Like This

- [AI investors based in San Francisco 353](https://millionrounds.com/lists/ai-investors-based-in-san-francisco)
- [AI investors based in New York 345](https://millionrounds.com/lists/ai-investors-based-in-new-york)
- [Seed investors based in San Francisco 273](https://millionrounds.com/lists/seed-investors-based-in-san-francisco)
- [Series A investors based in San Francisco 266](https://millionrounds.com/lists/series-a-investors-based-in-san-francisco)
- [Series A investors based in New York 255](https://millionrounds.com/lists/series-a-investors-based-in-new-york)
- [Seed investors based in New York 227](https://millionrounds.com/lists/seed-investors-based-in-new-york)
- [AI investors based in London 223](https://millionrounds.com/lists/ai-investors-based-in-london)
- [Series B investors based in New York 198](https://millionrounds.com/lists/series-b-investors-based-in-new-york)
- [Fintech investors based in New York 197](https://millionrounds.com/lists/fintech-investors-based-in-new-york)

[All investor lists *→*](https://millionrounds.com/lists)

## Quick answers about cleantech investors based in London

### Who are the most active cleantech investors based in London?

By cheques observed, the most active are Index Ventures, Antler, Crowdcube, Seedcamp and GSR.

### How many cleantech investors based in London are there?

64 are on record. 95% made an investment in the last 12 months and 72% have led a round.

### Which stages do cleantech investors based in London back?

Of the rounds with a named stage in the last 12 months, mostly Seed (29%) and Pre-seed (19%).

### How big are the rounds cleantech investors based in London join?

The typical (median) round among the leading investors here is $6M.

### Which sectors do cleantech investors based in London back most?

In the last 12 months, mostly AI, Energy and Fintech.

### Which cleantech investors based in London lead the most rounds?

Index Ventures (62 led), Balderton Capital (22 led) and Octopus Ventures (11 led).

### What have cleantech investors based in London invested in recently?

Recent rounds include Claimlane (Series A, Nov 2026, with Verb Ventures), Granit (Seed, Nov 2026, with Seedcamp) and Nayara (Pre-seed, Nov 2026, with SFC Capital).

### How is this list of cleantech investors based in London ranked?

By cheques observed, from the rounds and filings we watched, and never by anything anyone paid for. It is rebuilt every night.

Built from the rounds we watched, refreshed every night. [How we count](https://millionrounds.com/methodology) · [Report a correction](https://millionrounds.com/corrections)