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UK Innovation & Science Seed Fund

Venture capital

London · Pre-Seed–Series A · 24 people tracked

Also known as The Rainbow Seed Fund

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Investment thesis

UKI2S backs early-stage, ambitious businesses and university/research spinouts across the UK, providing capital and hands-on support from pre-seed through exit. With a 20-year track record, it helps portfolio companies raise further funding, recruit senior talent, build boards, advance DE&I and ESG, and deliver impact. The fund emphasizes co-investment, attracting roughly £25 of private capital for every £1 it invests, and leverages the broader Future Planet Capital network to help science- and technology-driven companies grow and scale.

Source: firm website, verified Aug 3, 2026.

Stage
Pre-Seed–Series A
Check
$127K – $635K
HQ
London, GB
Instruments
Equity
Founded
2001
AUM
$187.5M
Tracked investments
85

Team · 24 people

from the firm's website & public directories

What they invest in

from 14 of 85 portfolio companies

Biotech ×8Deep Tech ×8AI & Machine Learning ×4AgTech ×3Healthtech ×3Hardware ×2Medical Devices ×2New Materials ×2

HQs:United Kingdom×8

Investments · 85 tracked

founders shown can be your intro path
14 Glialignglialign.com
Aquark Technologies Seedaquarktechnologies.comin
ArkVax Seedarkvax.com
Ascension Unkownascension.globalin
Astut
Astut Seedastut.co.uk
Atelerix Seedatelerix.co.ukin𝕏
Atheras Analytics Seedatherasanalytics.comin

Atheras Analytics develops AI-based predictive software that forecasts weather-related satellite network outages up to six hours ahead and automates network operations for satellite operators.

AI & Machine LearningDeep TechSpace Tech

Bitrobius Genetics Seedbitrobius.comin

Bitrobius Genetics is developing Gentrafix, a plasmid-based technology that delivers DNA into human cells and spreads it to adjacent cells to replace mutated genes.

BiotechDeep TechHealthtech

Cryogenx Seedcryogenx.comin
Cytotrait Managed by: Hassan Mahmudulcytotrait.com

Cytotrait develops novel traits for crops and food production using proprietary technology to reprogram chloroplast and mitochondrial genomes.

AgTechBiotech

digiLab
digiLab Managed by: Mark Whitedigilab.aiin

digiLab provides an AI platform called the Uncertainty Engine that helps organizations and governments tackle complex, high-stakes challenges by combining machine learning with uncertainty quantification for safer, more explainable decision-making.

AI & Machine LearningDeep TechEnterprise Software

Prof. Tim Dodwell(Co-Founder & CEO)Dr. Anhad Sandhu(Co-Founder & GM Saudi)Dr. Andrew Corbett(Director of AI)Dr. Nigel Toon(Chairman)Rory Scott Russell(Chief Growth Officer)

ExactTrak
ExactTrak Seedexacttrak.comin
Fusion Energy Partners
Fusion Energy Partners Seedfusionenergypartners.com
Halo Xray
Helix Geospacehelixgeospace.comin

Helix Geospace develops patented helical GNSS antennas (Dielectrix) and anti-jamming CRPx technology for resilient Position, Navigation, and Timing (PNT) applications.

Deep TechDefense TechHardware

HonuWorx Seedhonu-x.comin
HutanBio Seedhutanbio.comin
Hydregen
HydRegen Seedhydregenoxford.comin𝕏
iFASTifastdiagnostics.comin

iFAST Diagnostics develops a rapid antimicrobial susceptibility testing (AST) system that uses a microfluidic impedance chip to measure the electrical properties of individual bacteria, delivering resistant/susceptible and MIC results from Gram-negative blood cultures or bacterial isolates in under three hours.

BiotechHealthtechMedical DevicesWhiteley, GB

IGS (Geoscience International)
IGS Seedigsint.comin𝕏
Ikarovec Seedikarovec.comin

Ikarovec is a company focused on age-related macular degeneration (AMD), an eye condition that impairs central vision and can progress from Dry AMD to Wet AMD.

BiotechHealthtech

Inition
Inition Seedinition.energy
Lineat
Lineat Seedlineat.co.ukin
Luffy AI
mach42
Messium Seedmessium.co.uk
MitoRx Therapeuticsmitorxtherapeutics.comin
MuWave
NKIO Seednk-io.com
NorthRownorthrow.comin𝕏
Oxford Space Systems - companyoxford.space

Enables lower launch costs and scalable capabilities for civil and defence space applications.

Pencil Biosciences - companypencilbiosciences.comin

Developer of a novel gene modulation technology aimed at transforming gene editing for therapeutics and industrial biotechnology.

ProductiveMachines Seedproductivemachines.co.ukin
Q5D
Quantum Dice
Quantum Dice Seedquantum-dice.com
QuberTechqubertech.ukin

QuberTech is a UK-based biotechnology company developing biotech tools to produce natural rubber from alternative crops grown in controlled environments, aiming to deliver traceable and sustainable materials.

AgTechBiotechNew Materials

Resurrect Bioresurrect.bio

Portfolio news

latest coverage across their companies

Frequently asked questions

What stage does UK Innovation & Science Seed Fund invest at?
UK Innovation & Science Seed Fund invests at the Pre-Seed, Seed, Series A stages.
What is UK Innovation & Science Seed Fund's typical check size?
UK Innovation & Science Seed Fund typically writes checks of $127K – $635K.
What sectors does UK Innovation & Science Seed Fund focus on?
UK Innovation & Science Seed Fund focuses on Advanced Manufacturing, Biotech, Cleantech, Climate Tech, Deep Tech, Defense Tech, EdTech, Energy, Hardware, Healthtech, Impact & Social Good, IoT, Medical Devices, SaaS, Sector Agnostic, Space Tech.
Where is UK Innovation & Science Seed Fund located?
UK Innovation & Science Seed Fund is headquartered in London, GB.

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UK Innovation & Science Seed Fund photoUK Innovation & Science Seed Fund photo

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