Directory

Kelvin Capital

VCOtherAIBritish

Kelvin Capital is a Glasgow-based angel investment syndicate founded in 2009 that backs growth-stage companies across technology, life sciences, and electronics manufacturing. The group has deployed over £150 million into more than 35 portfolio companies alongside other angel syndicates and venture capital firms, and also operates the Kelvin Capital Catalyst Fund targeting established EBITDA-positive UK businesses facing succession or expansion inflection points.

Kennek

ScaleupFinanceSaaSBritish

Lending operating system and SaaS platform for alternative lenders and credit investors covering loan origination, portfolio management, reporting and investor relations; won Fintech Startup of the Year 2024 at the London Fintech Awards.

Kennet Partners

VCSaaSAIBritish

Kennet Partners is a London-headquartered venture capital firm founded in 1997 that focuses exclusively on bootstrapped and capital-efficient B2B SaaS technology companies in Europe and the US. The firm typically provides the first external funding to founder-owned software businesses and has over €1.3 billion in cumulative assets under management across six funds. Kennet also maintains offices in Silicon Valley and Frankfurt.

Kero

VCClimateBritish

Kero (formerly known as Kero Development Partners) is a UK-based early-stage investment firm that backs innovative engineering businesses with patented or patentable technologies. Founded in 2017, the firm focuses on clean tech, renewable energy, advanced materials, and industrial innovation, providing both capital and operational support to its portfolio companies. Notable portfolio companies include Power Roll (flexible solar film) and ZELIM (unmanned rescue vessels).

Keyfactor

ScaleupCybersecurityForeign

Keyfactor helps organizations secure machine identities, cryptography, and AI systems with trust infrastructure that enables digital trust, crypto-agility, and quantum readiness.

Keyless

ScaleupCybersecurityBritish

Privacy-preserving biometric authentication using patented Zero-Knowledge Biometrics, verifying face and device cryptographically without storing retrievable biometric data; includes anti-deepfake and anti-injection protections.

Keyrock

ScaleupCrypto & Web3FinanceForeign

Scaling liquidity and pricing assets since 2017. We enhance digital markets. Backed by time-tested algorithms and ironclad tech. Market making - OTC - Options

Ki 13

StartupClimateDeep TechBritish

Ki 13, formerly Ki Hydrogen, is a UK cleantech startup developing a proprietary biomass electrolysis technology that converts lignocellulosic biomass into green hydrogen and biogenic CO2. These outputs are intended as cost-competitive feedstocks for synthetic fuels such as sustainable aviation fuel, e-methanol and e-methane.

Kindred Capital

VCOtherAIBritish

Kindred Capital is a London-based early-stage venture capital firm founded in 2015, known for its pioneering 'equitable venture' model in which every founder backed becomes a co-owner of the fund by receiving a share of carry. The firm invests at pre-seed and seed stages in mission-driven, technology-driven founders across Europe. Its portfolio includes companies such as RobCo, Cradle, and Lottie, and 54% of its Fund I portfolio successfully raised Series A funding within three years.

Kineo Finance

VCFinanceClimateForeign

Kineo Finance is an international financing partner offering venture leasing, factoring, working capital and selective equity investments to hardware and technology scale-ups, primarily across Europe and North America.

King's Ventures

Incubator / AcceleratorOtherAcademiaBritish

The Entrepreneurship Institute at King's College London is the university's central hub for entrepreneurial activity, commercialising and scaling innovations founded by King's students, staff, and alumni. It runs the 12-month King's Start-up Accelerator and King's Spin-out Accelerator, offering mentoring, workshops, office space, and investor connections. The portfolio has facilitated over £121 million in investment and supported more than 180 companies.

Kinnevik

VCSaaSAIForeign

Kinnevik is a Swedish growth investment company founded in 1936, focused on backing ideas and founders in transformative sectors including software, health & bio, and climate tech. It takes active, long-term ownership stakes in unlisted companies primarily across Europe and the US, and is listed on Nasdaq Stockholm. Kinnevik also maintains a London office in Soho.

Klarna

CorporateFinanceForeign

Klarna is a Swedish fintech company and digital bank offering buy now, pay later (BNPL) services, payments, and shopping tools to consumers and merchants globally. Founded in 2005 in Stockholm, it serves over 114 million consumers and partners with more than 850,000 merchants worldwide. Klarna completed its IPO on the NYSE (ticker: KLAR) in September 2025 and has offices in London and Manchester.

Klaviyo

CorporateSaaSE-commerceForeign

Klaviyo unifies AI-powered email marketing and SMS to drive growth, retention, and measurable results. Build personalised, omnichannel experiences across WhatsApp, ecommerce, and more with K:AI Agents.

Knowledge Quarter

Ecosystem Bodies, Catapults & InstitutionsOtherBritish

Knowledge Quarter (KQ) is an innovation district consortium of over 150 partner organisations situated within a one-mile radius of King's Cross in London, spanning academic, cultural, research, scientific, and technology institutions. Founded in 2014, it facilitates collaboration and knowledge exchange among members ranging from the British Library and Francis Crick Institute to Google.

Kodesage

StartupAISaaSForeign

AI platform that modernises on-premise legacy enterprise software, extracting a knowledge layer from complex codebases to rebuild them in modern languages.

Kong

ScaleupSaaSCybersecurityForeign

From APIs to AI, Kong is the fabric of modern connectivity. Centralize LLM access, automate API workflows, and secure your digital ecosystem at scale.

Kord (formerly Checkboard)

StartupFinanceProptechBritish

Kord (formerly Checkboard) is a London-based fintech providing an end-to-end compliance and payments platform for regulated industries, combining identity verification, AML screening, client onboarding, document signing and payment processing. It serves estate and letting agents, law firms, conveyancers and financial services businesses.

Koro Capital

VCOtherBritish

Koro Capital is a London-founded, solo-GP-style venture capital firm that invests directly in early-stage technology companies from pre-seed through Series A, while also allocating capital as a limited partner to other emerging and established venture and private equity funds.

Kpler

ScaleupLogisticsSaaSForeign

Unlock global trade intelligence with Kpler’s real-time data on 40+ commodities, power markets, and maritime logistics, trusted by 10,000+ organisations.

Kraken Technologies

CorporateClimateAIBritish

AI-driven utility operating and customer platform spun out of Octopus Energy; licensed to utilities worldwide to manage millions of energy accounts.

Kraken Technology Group

ScaleupDefenceDeep TechBritish

Kraken Technology designs & builds autonomous surface & subsurface vessels for defence, security, infrastructure, commercial & aid missions worldwide.

Kriya

ScaleupFinanceBritish

Embedded B2B payments and credit platform (PayNow/PayLater) for retailers and marketplaces; formerly known as MarketFinance.

Kuano

StartupBiotech & Life SciencesAIBritish

Cambridge-based spin-out using quantum simulation and quantum-inspired AI to design enzyme inhibitors and novel small-molecule drugs. Its Quantum Lens platform applies physics-based quantum fingerprints to guide hit generation and compound optimisation for drug discovery programmes.