Directory

Health Innovation Network

Ecosystem Bodies, Catapults & InstitutionsBiotech & Life SciencesDeep TechBritish

Health Innovation Network South London is the NHS-commissioned health innovation network for south London, connecting the NHS, academia, industry, and investors to accelerate the spread and adoption of proven health technologies and innovations. Hosted by Guy's and St Thomas' NHS Foundation Trust, it serves 55 health and care organisations across 12 south London boroughs.

HealthHero

ScaleupBiotech & Life SciencesDeep TechBritish

Europe's largest digital-first clinic, providing remote access to GPs, mental health professionals and extended care services across multiple European markets; grown via roll-up of telemedicine providers and has served over 30 million patients.

Healthtech-1

StartupBiotech & Life SciencesDeep TechBritish

Automation platform for NHS primary care, automating new patient registrations and lab-report filing to reduce administrative burden on GP practices.

Hearst Ventures

VCMediaDeep TechForeign

Hearst Ventures is the corporate venture capital division of Hearst Corporation, a US media and information conglomerate. Founded in 1995, it invests globally from Series A through growth-stage rounds in companies at the intersection of media, information, technology and healthcare.

Hebbia

ScaleupFinanceAIForeign

The leading AI platform for finance, used by the world's leading asset managers, investment banks, law firms and Fortune 500 companies.

Hedosophia

VCConsumerFinanceBritish

Hedosophia is a London-based growth-stage venture capital firm founded in 2012, focused on backing category-defining consumer and technology companies globally, particularly two to four years pre-IPO. The firm invests in companies across Europe, the United States, and China, with a portfolio including Spotify, Uber, Stripe, and Monzo. Hedosophia is authorised and regulated by the Financial Conduct Authority.

Heidi

ScaleupBiotech & Life SciencesDeep TechForeign

Heidi supports clinicians across every step of care—from documentation to evidence. Practical AI tools designed to save time, reduce… - United Kingdom

Helios

PEFinanceBritish

Helios Investment Partners is a London-based pan-African multi-strategy investment firm founded in 2004, widely regarded as the largest Africa-focused private investment manager. The firm manages capital across private equity, climate solutions, and digital venture strategies, with portfolio companies operating across more than 30 countries in Africa. Helios focuses on high-growth sectors including financial services, communications, power, logistics, and agriculture, with particular emphasis on Nigeria, South Africa, and Kenya.

Helsing

ScaleupDefenceAIForeign

European defence AI company building software for autonomous systems across air, sea and electronic-warfare domains; holds UK contracts across frontline commands and operates from multiple European capitals.

Henley Business Angels

Ecosystem Bodies, Catapults & InstitutionsFinanceClimateBritish

Henley Business Angels (HBA) is a UK angel investment network established in 2016 under the auspices of Henley Business School at the University of Reading, serving the Thames Valley region. The network facilitates investments of £50,000 to £500,000 in early-stage, high-growth businesses, with particular interest in clean and green technology, life sciences, biomedical, robotics, and SaaS businesses. HBA is a member of the UK Business Angels Association and a signatory of the Investing in Women Code.

Hertility Health

ScaleupBiotech & Life SciencesConsumerBritish

Reproductive health platform offering at-home hormone and fertility testing, diagnostics for PCOS, endometriosis, menopause, and personalised care pathways.

Hg

PESaaSAIBritish

Hg (formerly HgCapital) is a London-headquartered private equity firm founded in 2000 and specialising in technology and software buyouts across Europe and the United States. The firm focuses on businesses driving workplace automation, professional productivity, and enterprise software, with over 25 years of experience in the sector. With more than $75 billion in funds under management and a portfolio of over 60 companies, Hg is ranked among the top ten private equity firms globally.

HiBob

ScaleupSaaSBritish

Streamline HR, Payroll & Finance with HiBob. Automate processes with Bob to cut the noise. Just Enough Thinking, just the right results.

HighRadius

ScaleupFinanceAIForeign

World's #1 Autonomous Finance Platform to lower DSO, optimize working capital, fast-track financial close and improve productivity.

Highland Europe

VCSaaSConsumerBritish

Highland Europe is a growth-stage venture capital firm that separated from Highland Capital Partners in 2012 to focus on European-rooted technology scale-ups. The firm invests in rapidly growing internet, mobile, and software companies demonstrating clear product-market fit and compelling unit economics, primarily at Series B and Series C stages, with typical cheques of €20–80 million. It manages over $3 billion in assets across multiple funds and has offices in London and Geneva.

Hightouch

ScaleupSaaSAIForeign

Hightouch is the Agentic Marketing Platform powered by the industry-leading Composable CDP: AI marketing that actually knows your brand, customers, and business.

Highview Power

ScaleupClimateBritish

Long-duration energy storage pioneer building liquid air energy storage (LAES) plants to store excess renewable energy for the grid.

Hijack Bio

StartupBiotech & Life SciencesDeep TechBritish

Biotechnology and software company researching biotherapeutic and drug-delivery approaches at early stealth stage.

Hivemind Digital Group

VCCrypto & Web3FinanceForeign

Hivemind Digital Group is a New York and London-based asset management platform, founded in 2021, that allocates institutional capital across digital assets, tokenization infrastructure and traditional financial markets. It is the parent company of Hivemind Capital Partners and recently raised $17 million in strategic funding led by M&G Investments.

Holistic AI

ScaleupAI SafetyAIForeign

End-to-end AI governance, risk and compliance platform: AI system discovery and inventory, risk assessment, and audits against EU AI Act, NIST AI RMF, and ISO 42001.

Hometree

ScaleupClimateBritish

Residential energy services and finance group installing and financing heat pumps, solar, batteries, and boilers to decarbonise UK homes.

Honestly Tasty

StartupFoodtechConsumerBritish

Plant-based artisan cheese brand using traditional fermentation techniques to make vegan cheeses at a North London facility.

Hootsuite

ScaleupSaaSMediaForeign

Hootsuite is a social media management tool that brings scheduling, content creation, analytics, and social listening to one place.

Hotbed

Professional ServicesFinanceReal EstateFunding PlatformBritish

Hotbed Limited was a Milton Keynes-based investment platform founded in 2003 that offered experienced private investors direct access to unquoted companies and commercial property deals. Operating on a membership model, it allowed investors to select individual deals and build personalised portfolios. Hotbed was acquired by Connection Capital in February 2012 and all subsequent investment activity moved to the Connection Capital banner.