Martlet Capital
Venture capitalCambridge · Pre-Seed–Series A · 8 people tracked
Also known as Tayvin Shelf Company 2 Limited
Investment thesis
Martlet Capital backs early-stage deep tech and life sciences B2B startups with high growth potential, providing patient capital alongside operational support, experience, and access to a network of contacts. Since launching in 2011 it has invested in more than 75 startups and achieved several exits via trade sales and IPOs. Having deployed its primary balance sheet fund, Martlet continues to support its existing portfolio with co-investment from EMV Capital, which now owns and manages its VC operations.
Source: firm website, verified Aug 3, 2026.
Team · 8 people
from the firm's website & public directories
What they invest in
from 43 of 48 portfolio companiesDeep Tech ×19Hardware ×14AI & Machine Learning ×13Healthtech ×12Biotech ×10New Materials ×8IoT ×6Semiconductors ×6
HQs:United Kingdom×21
Who they back
founder profiles across 17 portfolio companiesFounding team size:solo founder×92 founders×73 founders×1
Investments · 48 tracked
founders shown can be your intro pathBy year:2023 · 12020 · 12 dated
Kalium Health is developing personalised, at-home health monitoring for chronic kidney disease, aimed at helping healthcare providers and patients track key risks to improve outcomes and reduce costs.
Digital HealthHealthtechMedical DevicesCambridge, GB
Fiona Karet(Chief Medical Officer)
Co-investorsCambridge Angels groupEMV Capital
Supplier of protein research tools to life scientists.
HealthtechCambridge
Jonathan Simon Milner(Director)Alan Thomas Hirzel(Director)Michael Shaun Baldock(Director)
BoardPeter Vance Allen(Director)Mara Glickman Aspinall(Director)Louise Alexandra Virginia Charlotte Patten(Director)
AIVIVO develops drug discovery solutions at the organism level, focusing on accelerating pharmaceutical development processes.
AI & Machine LearningBiotech
Peyman Gifani(Founder)in
Co-investorsEMV CapitalManta Ray Ventures
Allfocal Optics develops nanophotonic display technology based on research from Cambridge University, aimed at improving visual clarity and comfort.
Deep TechHardwareSemiconductorsCambridge, GB
Dr. Pawan Shrestha(Founder)in
Co-investors7percent VenturesEMV Capital
Solytics Partners provides risk management, financial crime and compliance (AML/CFT), data analytics, and ESG/climate risk services and technology to financial institutions such as banks, capital markets firms, and insurers.
AI & Machine LearningData & InfrastructureEnterprise SoftwareFintechSaaS
Co-investorsCambridge Innovation CapitalWalking Ventures
Axol Bioscience manufactures human induced pluripotent stem cell (iPSC)-derived cells and provides laboratory services including iPSC banking, reprogramming, gene editing, and cell manufacturing for preclinical drug discovery and disease modeling.
BiotechDeep TechHealthtech
Co-investorsCambridge Angels groupEMV Capital
Cambridge GaN Devices (CGD) designs ICeGaN gallium nitride power transistors that integrate temperature control and gate reliability features and can be driven by standard silicon gate drivers.
Deep TechHardwareSemiconductors
Fabio Necco(CEO)
Co-investorsCambridge Innovation CapitalEMV CapitalIQ CapitalBritish Patient Capital
Cambridge Nutraceuticals develops health supplements based on scientific research, aimed at supporting longer and healthier lives.
ConsumerLongevityWellness & Fitness
Co-investorsEMV Capital
Camstent develops a patented Bacteriaphobic (bacteria-repelling), non-eluting polymer coating for silicon-based medical devices such as Foley catheters, endotracheal tubes, chest drain tubes, and cannulas.
HealthtechMedical DevicesNew Materials
Co-investorsCambridge Angels groupEMV Capital
Converge builds concrete monitoring and management tools for construction contractors, including embedded and reusable long-range sensors and AI-powered mix insights under its ConcreteDNA suite.
Advanced ManufacturingAI & Machine LearningConstruction TechIoTLondon, GB
Raph Scheps(CEO)inGideon Farrell(CTO)inRaphael Scheps(Founder)
Co-investorsCambridge Angels groupClimate InvestmentEMV CapitalEntrepreneur FirstJ-Impact
Dogtooth develops commercial robotic harvesting systems for fruit growers, using on-board 360-degree imaging to pick berries and inspect them for mass, ripeness, and defects.
AgTechAI & Machine LearningRobotics
Co-investors24 HaymarketEMV Capital
Echion Technologies is a battery technology company that develops and commercialises XNO®, a niobium-based fast-charging battery anode material supplied to cell manufacturers worldwide.
CleantechDeep TechEnergyNew Materials
Jean de la Verpillière(CEO & Co-founder)Alex Groombridge(CTO & Co-founder)Ben Ting(Chief Commercial Officer)Sarah Stevenson(Chief Operating Officer)Ceri Neal(Chief Financial Officer)
Co-investorsEMV CapitalKima VenturesVolta Energy Technologies
Exonate is a biotechnology company developing treatments for retinal vascular diseases, with a lead asset (EXN407) intended as a topical therapy for diabetic retinopathy and diabetic macular oedema.
BiotechDigital HealthHealthtechMedical Devices
Olav Hellebø(Chief Executive Officer)
Co-investorsO2h VenturesWellcome TrustWren CapitalCambridge Angels groupEMV CapitalStoic VC+1 more
Flusso develops compact MEMS-based mass flow and air velocity sensors built on a proprietary thermal Tungsten (TMEMS) sensing platform.
Deep TechHardwareSemiconductors
Co-investors24 Haymarket
FocalPoint develops S-GNSS and Supercorrelation software that improves the accuracy and reliability of standard GNSS receivers using physics and machine learning, without additional hardware.
AI & Machine LearningDeep TechMobility & Transportation
Co-investorsCambridge Angels groupEMV CapitalMolten VenturesIQ Capital
Frontier develops videogames for PC and console platforms, using its in-house Cobra development tools.
Gaming
Co-investorsMetaplanet
Mindler (previously ieso) provides one-to-one, therapist-delivered text-based cognitive behavioural therapy (CBT) delivered online to patients, using de-identified therapy data and analysis to inform treatment.
Digital HealthHealthtechMental Health
Co-investorsCambridge Angels groupEMV CapitalMolten Ventures
Infinitopes develops immunotherapy treatments for cancer, focusing on immune-oncology and antigen discovery solutions aimed at improving patient outcomes and affordability in cancer care.
AI & Machine LearningBiotechHealthtechMedical DevicesOxford, GB
Jonathan Kwok(Co-Founder, President & Chief Medical Officer)inLian Ni Lee(VP Preclinical & Co-Founder)in
Co-investorsAmplify PartnersManta Ray VenturesOctopus VenturesEMV CapitalKindred Capital
Myrtle.ai develops low latency AI inference products, including its VOLLO inference accelerator, that run machine learning models in microseconds.
AI & Machine LearningFintechHardware
Co-investorsEMV CapitalNew Science VenturesIQ Capital
NoBACZ Healthcare develops antibiotic-free, patented liquid barrier products for wound and lesion management, creating waterproof physical barriers that block microbes as an alternative to topical antimicrobials.
AgTechBiotechHealthtechNew Materials
Co-investorsAdjuvoCambridge Angels groupEMV CapitalThe Yield Lab EuropeThe Yield Lab
Nu Quantum develops quantum networking solutions to enable commercial quantum computer scaling.
Deep TechHardwareQuantum ComputingCambridge, GB
Dr. Carmen Palacios-Berraquero(Founder and CEO)Carmen Palacios-Berraquero(Founder)in
Co-investors7percent VenturesAhren Innovation CapitalAmadeus Capital PartnersEMV CapitalExpeditionsIQ Capital+4 more
NunaBio manufactures high-complexity DNA constructs from challenging sequences up to production-scale volumes using a modular, cell-free "DNA micro-foundry" platform.
BiotechDeep TechHardwareNew Materials
Co-investorsEMV CapitalMaven Capital PartnersNorthstar Ventures
OctaiPipe offers a collaborative AI platform that optimises data centre cooling to cut cooling energy use by up to 30% and reduce total building energy costs.
AI & Machine LearningCleantechEnergyEnterprise SoftwareIoT
Co-investorsDouble DownEMV CapitalMolten VenturesMomenta VenturesSuperSeed
Oxford Space Systems designs and manufactures deployable antennas for satellites, focused on reducing mass and improving stowage efficiency and performance.
Deep TechHardwareSpace TechHarwell, GB
Sean Sutcliffein
Co-investorsCambridge Angels groupEMV CapitalFuture Planet CapitalLongwall Venture Partners LLPOxford Investment Opportunity NetworkOxford Investment Opportunity Network (OION)+4 more
Paragraf develops graphene-based electronic devices, including molecular sensors (electrolyte-gated field-effect transistors) for biosensing and chemical sensing, and Hall effect sensors for current, position, and magnetic field measurement at cryogenic temperatures.
Deep TechNew MaterialsSemiconductorsCambridgeshire
Simon Thomas(Chief Executive Officer of the issuer.)
Co-investorsAmadeus Capital PartnersBlack Opal VenturesCambridge Angels groupEMV CapitalIn-Q-TelIQ Capital+4 more
Pencil Biosciences develops a fully synthetic, modular, non-CRISPR gene editing platform that edits DNA without causing a break or nick.
BiotechDeep TechHealthtech
Co-investorsEMV CapitalFuture Planet CapitalNorthern GritstoneOctopus VenturesUK Innovation & Science Seed Fund
Pervasid develops TrackMaster, a fixed ceiling-mounted passive RFID reader system that provides real-time, item-level inventory visibility with over 98% accuracy and no manual scanning.
HardwareIoTRetail Tech
Co-investorsEMV CapitalStanley Ventures
PharmEnable applies AI to small molecule drug discovery, focusing on challenging and data-sparse biological targets that traditional methods struggle to address.
AI & Machine LearningBiotechDeep Tech
Co-investorsCambridge Angels groupMC Healthcare Ventures
Plastometrex develops materials-testing instruments based on its proprietary Profilometry-based Indentation Plastometry (PIP), which extracts stress-strain curves from indentation data using inverse finite element analysis.
Deep TechHardwareNew Materials
Co-investorsEMV Capital
Porotech develops MicroLED display technology, supplying components and technology consultancy to help partners manufacture microLED displays.
Deep TechHardwareSemiconductors
Co-investorsCambridge Angels groupIQ Capital
Psyomics builds behavioral health assessment tools, including beseen™, which captures structured data and free text from patients, families, and professionals to support clinical pathways for adults and young people.
Digital HealthHealthtechMental Health
Dr. Melinda Rees(Chief Executive Officer)inRupert Hipwell(Chief Commercial Officer)inAlex Nancekievill(Chief Technology Officer)in
Co-investorsCambridge Angels groupEMV Capital
Qkine manufactures animal-free recombinant bioactive proteins, including growth factors, cytokines, biomarkers, and attachment factors, for stem cell, organoid, and cell culture research.
BiotechDeep TechCambridge, GB
Co-investorsCambridge Angels groupEMV CapitalOxford Investment Opportunity Network (OION)
Cellulose-based sustainable colorants for fashion, cosmetics, and packaging.
Co-investorsCambridge Angels groupEMV CapitalSustainable VenturesAda Ventures
RoboK offers SiteLens®, an AI computer vision platform that analyzes existing CCTV footage to detect workplace hazards, monitor PPE compliance, identify near misses, and generate safety KPI and compliance reports.
Advanced ManufacturingAI & Machine LearningLogistics & Supply Chain
Co-investorsCambridge Angels groupEMV Capital
Semarion is an advanced materials engineering company that makes SemaCyte microcarriers — barcoded, microfabricated micro-wells that turn adherent cells into assay-ready reagents compatible with automated 384-well liquid-handling workflows.
BiotechDeep TechNew Materials
Co-investorsEMV Capital
Signaloid develops UxHw technology, a compute platform that propagates uncertainty by evaluating a distribution of inputs in a single program execution to produce distribution-based results.
AI & Machine LearningDeep TechHardwareSemiconductors
Phillip(Founder, CEO/CTO)
Co-investorsCambridge Angels groupEMV CapitalIQ CapitalType One Ventures
Sorex Sensors develops sensors based on film bulk acoustic resonator (FBAR) technology for indoor air quality monitoring, detecting toxic particulates and volatile organic compounds in the sub-PM2.5 range.
Deep TechHardwareIoT
Co-investorsCambridge Angels groupEMV Capital
Spotta builds IoT-based pest detection systems that automatically monitor for insects such as bed bugs, red palm weevil, and forestry pests.
AgTechAI & Machine LearningHardwareIoTCambridge, GB
Robert Fryers(Founder & CEO)inNeil D'Souza-Mathew(Founder & CTO)inRob Alner(COO)inMike Payne(Finance Director)
Co-investorsBayes Entrepreneurship FundCambridge Angels groupEMV CapitalREMUS CapitalThe Yield Lab EuropeThe Yield Lab
Strolll offers an augmented reality platform for neurological rehabilitation, providing gait training, rehab exercises, and assessments in one system.
Digital HealthHealthtechMedical Devices
Tom Finn(Founder)in
Co-investorsEMV CapitalFuture Planet CapitalIW CapitalKluz Ventures
Techspert recruits life sciences and healthcare experts for qualitative and quantitative research projects, using AI-powered tools to automate interview scheduling, transcription, and data capture for market research firms and biotech companies.
AI & Machine LearningHealthtechMarketing Tech
Co-investorsCambridge Angels groupInnvotec Ltd.Oxford Investment Opportunity Network (OION)
TransparentChoice provides a project portfolio prioritization system combining a criteria-based decision framework, a portfolio management platform, and expert PMO advisory support.
Enterprise SoftwareSaaS
Co-investorsCambridge Angels groupEMV Capital
Tripism is a platform for corporate travel teams to communicate travel program information and engage with business travelers, replacing outdated travel intranets.
Enterprise SoftwareSaaSTravel & HospitalityCambridge, GB
Adam Kerr(Founder)
Co-investorsEMV Capital
Vantage Power develops electrification and connectivity technologies for commercial and defense vehicles, including hybrid-retrofit systems for city buses, liquid-cooled lithium-ion battery packs, and the VPVision data connectivity and analytics platform.
CleantechHardwareIoTMobility & Transportation
Alexander Schey(Co-founder)Toby Schulz(Co-founder)
Xampla is a materials innovation company that develops Morro plant-based polymer materials as biodegradable, home-compostable alternatives to polluting plastics.
Circular EconomyDeep TechNew MaterialsCambridge, GB
Tuomas Knowles(Professor / Founder)Marc Rodriguez(CTO)Marc Rodríguez Garciain
Co-investorsAmadeus Capital PartnersAvonmore DevelopmentsCambridge Angels groupEmerald Technology Ventures AgEMV CapitalHorizons Ventures+3 more
Exits · 1
IPOs and acquisitions across the tracked portfolioVantage Poweracq. by Allison Transmission
Portfolio news
latest coverage across their companiesCambridge Nutraceuticals · trysignalbase.com · Jun 16, 2026
Principals & officers · per Companies House
what is this? ⓘDirector · American,British · since 2025
Director · British · since 2021
Director · British · since 2021
Director · German · since 2026
Corporate director · since 2023
Pm - Co-Invest - Martlet Limited — 25–50% of shares, 25–50% of voting rights
Frequently asked questions
- How many investments has Martlet Capital made?
- Martlet Capital has 48 tracked investments, 1 of which have exited via acquisition or IPO.
- What stage does Martlet Capital invest at?
- Martlet Capital invests at the Pre-Seed, Seed, Series A stages.
- What is Martlet Capital's typical check size?
- Martlet Capital typically writes checks of $317.5K.
- What sectors does Martlet Capital focus on?
- Martlet Capital focuses on Biotech, Consumer, Data & Infrastructure, Deep Tech, Enterprise Software, Hardware, Healthtech, IoT, Medical Devices, New Materials, Retail Tech, SaaS, Sector Agnostic, Semiconductors.
- Where is Martlet Capital located?
- Martlet Capital is headquartered in Cambridge, GB.
- Who does Martlet Capital co-invest with?
- Martlet Capital most often shares deals with EMV Capital, Cambridge Angels group, IQ Capital, among 60 tracked co-investors.
Images
Similar investors
Everywhere Ventures is an early-stage venture firm, backed by a community of founders and operators as LPs, that writes early checks (including pre-seed) into startups across many sectors and geographies.
The Alibaba Entrepreneurs Fund is a not-for-profit initiative of Alibaba Group that provides investment capital and strategic guidance to entrepreneurs and young people, focusing on Hong Kong and Taiwan-nexus startups.
Industrial Technology Investment Corporation is the venture capital arm of Taiwan's Industrial Technology Research Institute (ITRI), backing startups across multiple stages and sectors while providing access to ITRI's R&D resources.
Oxford Technology is a UK investment manager running SEIS and EIS tax-efficient funds that back seed and early-stage technology startups based in and around Oxford, and operates the Wider Oxford Technology Angel Network (WOTAN).
Cowin Capital Group is a Chinese investment management firm with extensive experience investing in and exiting technology, healthcare, and industrial companies, many of which have gone public on Chinese and Hong Kong exchanges.