All Rankings

Top Series A Companies in the UK 2026

Private companies headquartered in the United Kingdom whose latest recorded round was Series A, ranked by disclosed lifetime funding.

Known total funding for 100 of 100 ranked companies: $6.1B.

Showing top 100 matching companies · Ranked by total funding raised

Use company data through the API.
Example request
curl "https://indexed.vc/api/v1/companies?countries=United+Kingdom&operatingStatus=active&sort=total_funding_raised&order=desc&limit=100" -H "X-API-Key: YOUR_API_KEY"

The API has no funding stage filter, so this includes every stage, not only Series A.

The API has no company type filter, so public companies can appear; this list counts private companies only.

The API cannot leave out companies whose latest round is a grant; this list does.

Data from Indexed.vcUpdated

Methodology: up to 100 active companies matching this list's filters are ordered by disclosed total funding in USD. Companies whose latest round is one of: Grant are excluded. Totals include recorded grants and other qualifying funding, not just equity. Open a company profile for its funding summary and available detail. How this data is built.

26
Valarian

Valarian builds digital sovereignty infrastructure, giving organisations real control over data m...

London, United Kingdom11–50Cybersecurity
Series ATotal funding$67.0MJul 2026
27
Isometric

Isometric is an agentic certification platform for the industrial economy, covering carbon remova...

United Kingdom51–200Sustainability, Climate Tech
Series ATotal funding$65.0MJun 2026
28
AstronauTx

AstronauTx is a biotechnology company targeting the biology of sleep architecture as a therapeuti...

London, United Kingdom11–50Biotech
Series ATotal funding$61.0MOct 2023
29
BCB Group

Crypto-native business account and payment services provider for institutional clients.

London, United Kingdom51–200Crypto & Web3, Fintech
Series ATotal funding$61.0MJan 2022
30
F
Flux

Receipts Reimagined.

London, United Kingdom11–50Crypto & Web3, Fintech
Series ATotal funding$54.5MFeb 2026
31
Notpla

Makes biodegradable, plastic-free packaging from seaweed and plants, replacing single-use plastic...

London, United Kingdom11–50Advanced Materials, Sustainability
Series ATotal funding$53.2MSep 2024
32
eXmoor

eXmoor provides cell and gene therapy consulting, process development, and GMP clinical manufactu...

Bristol, United Kingdom51–200Biotech, Healthcare
Series ATotal funding$52.0MMay 2023
33
Curve Therapeutics

Leveraging discovery platform to identify functional microcycles for cancer treatment

Southampton, United Kingdom11–50Biotech
Series ATotal funding$51.4MFeb 2024
34
Coincover

Coincover provides crypto security and digital asset protection solutions for institutions and th...

Cardiff, United Kingdom11–50Crypto & Web3, Financial Services
Series ATotal funding$50.7MJan 2026
35
causaLens

causaLens builds Digital Knowledge Workers that automate enterprise workflows through multi-agent...

Tokyo, United Kingdom51–200Mobility, Artificial Intelligence
Series ATotal funding$50.0MJan 2022
36
HCP Packaging

Designs, develops, and manufactures primary packaging for cosmetics and skincare brands from fact...

Bournemouth, United Kingdom1001–5000Manufacturing, Design Tools
Series ATotal funding$50.0MJun 2026
37
SurrealDB

AI-native multi-model database that unifies documents, graphs, vectors, search, and time-series f...

London, United Kingdom11–50Artificial Intelligence, Databases
Series ATotal funding$49.0MFeb 2026
38
Nucleome Therapeutics

Decoding disease-linked non-coding genome variants using 3D genome technology and machine learning

Oxford, United Kingdom11–50Artificial Intelligence, Biotech
Series ATotal funding$48.2MOct 2022
39
Velocity

Velocity provides CFOs with an enterprise platform for payments and treasury solutions powered by...

London, United Kingdom11–50Crypto & Web3, Fintech
Series ATotal funding$48.0MJul 2026
40
Greenjets

Greenjets pioneers bespoke propulsion systems that are quiet, safe, and efficient, accelerating t...

London, United Kingdom51–200Climate Tech, Space Tech
Series ATotal funding$47.0MJul 2026
41
BIOS Health

BIOS Health uses data-driven insights from the nervous system to build neural digital therapies f...

Cambridge, United Kingdom11–50Artificial Intelligence, Healthcare
Series ATotal funding$46.4MJun 2023
42
Latent Labs

Latent Labs builds generative AI foundation models that help biotechnology and pharmaceutical par...

London, United Kingdom11–50Artificial Intelligence, Biotech
Series ATotal funding$43.3MFeb 2025
43
Gensyn

Gensyn is a machine learning computing protocol for the world's deep learning models. It connects...

London, United Kingdom11–50Artificial Intelligence, Crypto & Web3
Series ATotal funding$43.0MJun 2023
44
LoQus23 Therapeutics

LoQus23 Therapeutics researches oral small molecule therapies targeting DNA mismatch repair to tr...

Cambridge, United Kingdom1–10Biotech, Healthcare
Series ATotal funding$43.0MOct 2024
45
V7

AI data platform and agent builder enabling finance, legal, and insurance teams to automate compl...

London, United Kingdom51–200Artificial Intelligence, Developer Tools
Series ATotal funding$43.0MNov 2022
46
Peptone

Biotechnology company designing small-molecule therapeutics that target intrinsically disordered ...

London, United Kingdom11–50Artificial Intelligence, Biotech
Series ATotal funding$42.5MJun 2022
47
Lapse

Lapse turns your iPhone into a disposable camera with a friends-only photo journal, helping peopl...

London, United Kingdom11–50Social Media
Series ATotal funding$42.4MFeb 2024
48
Mindgard

Mindgard is an AI security company that helps enterprise to test, detect, and respond to cyber th...

Lancaster, United Kingdom11–50Artificial Intelligence, Cybersecurity
Series ATotal funding$41.8MAug 2026
49
Arbolus

Arbolus is a data business and platform that turns real experience into trusted insight for clien...

Munich, United Kingdom51–200Retail, SaaS
Series ATotal funding$41.0MNov 2024
50
Space Forge

Space Forge grows ultra-high quality semiconductor substrates using space-derived crystal seeds, ...

Cardiff, United Kingdom11–50Defense Tech, Space Tech
Series ATotal funding$41.0MMay 2025