London startup directory
Hand-picked startups, investors, and ecosystem operators in London, with a custom city illustration in europe-startup-guide.com brand colors.
Showing 161–180 of 243 London · United Kingdom
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London · United Kingdom results
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Onfido
Onfido is a London-based identity verification company founded in 2012 that uses AI and biometric technology to help businesses verify user identities remotely. The platform combines document verification with facial biometrics to enable onboarding for financial services, sharing economy, healthcare, and other regulated industries. Onfido was acquired by Entrust in 2024 for approximately $400 million. Before the acquisition, the company had raised over $200 million and served customers including Revolut, Zipcar, and Bitstamp across 195 countries, processing millions of identity checks annually.
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Open Banking Expo
Organiser of Open Banking Expo, the UK and Europe dedicated Open Banking, Open Finance and Smart Data event, alongside a global community, awards and content programme. The show convenes banks, fintechs, regulators and investors shaping data-driven financial services.
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Open Banking Expo UK & Europe 2026
The UK and Europe's dedicated Open Banking, Open Finance and Smart Data show at the Business Design Centre in London. Four content stages plus a workshop theatre, an Innovation Zone and 40+ exhibitors bring together banks, fintech founders, regulators and investors shaping data-driven finance.
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Orbital Materials
Orbital Materials is a London-based AI startup applying foundation models to materials science, with a focus on designing novel carbon-capture sorbents, thermal management materials, and clean-energy components. Founded by former DeepMind researchers, the company developed LINUS, a large-scale generative model for atomic structures that can predict material properties and propose new compositions. Orbital has raised over $22 million from investors including Khosla Ventures and Radical Ventures. The company bridges the gap between AI research and physical-world climate technology, representing a new class of UK deep-tech ventures using machine learning for industrial decarbonization.
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Overmind
Overmind provides a security and control layer for agentic AI deployments in enterprise systems. The platform supervises autonomous agent behavior in live workflows and intervenes when actions appear unsafe, adversarially influenced, or outside policy constraints.
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Paddle
UK Merchant-of-Record platform handling payments, sales tax, compliance and billing across 300+ markets for SaaS and digital-product businesses; serves 10,000+ customers.
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Passion Capital
Passion Capital is an early-stage London VC founded in 2011 by Eileen Burbidge, Stefan Glaenzer, and Robert Dighero. The fund backs European early-stage technology companies, with a portfolio that has included Monzo, GoCardless, and DueDil. Passion is recognised for hands-on founder support and has been an influential voice in UK tech-policy discussions for over a decade.
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Paul Polman
Dutch business leader who was CEO of Unilever from 2009 to 2019, where he launched the Unilever Sustainable Living Plan and dropped quarterly earnings guidance. He co-authored Net Positive and co-founded the London-based foundation IMAGINE, advocating sustainable and equitable business.
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Paul Taylor
Founder and CEO of Thought Machine, the cloud-native core-banking platform. He previously founded a speech-technology company acquired by Google, where he built voice systems before turning to banking infrastructure.
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Philippe Botteri
Partner at Accel investing in cloud, SaaS, AI and security across Europe and Israel. He authors Accel's influential annual Euroscape report tracking the region's cloud and AI momentum.
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PhysicsX
PhysicsX applies machine learning and generative AI to advanced engineering simulation across aerospace, automotive, and energy systems. The platform accelerates design loops by reducing simulation time for fluid, thermal, and structural modeling, helping industrial teams move from concept to validation faster.
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Piotr Dabkowski
Co-founder and CTO of ElevenLabs, leading the research behind its speech-synthesis models. A former Google machine-learning engineer, he co-founded the company with Mati Staniszewski.
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Pledge Ventures
Pledge Ventures is the venture capital arm of Founders Pledge, launched in 2023 to invest in high-growth technology companies whose founders have made binding philanthropic commitments. The fund operates on a rules-based model across sectors and geographies, aiming to create a self-reinforcing flywheel between entrepreneurial financial success and positive social impact. Co-founded by Niki Buys and David Goldberg, the fund backs a broad portfolio of technology companies and is a featured partner at Nordic Tech Week 2026.
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Plum
Plum is a money management fintech that offers a mobile app with smart tools for automated saving, budgeting and investing, helping users manage personal finances with minimal manual effort. Founded in 2016 by Victor Trokoudes and Alex Michael, the company is headquartered in London with additional offices in Athens and Nicosia, and serves more than 2 million users across Europe. In July 2024 it raised a £16 million Series B round to support growth and a push toward profitability, with strategic investor Eurobank having taken a minority stake.
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Plural
Plural is a London-based venture fund founded in 2022 by operator-investors Taavet Hinrikus (Wise), Sten Tamkivi (Skype, Teleport), Ian Hogarth (Songkick), and Carina Namih. The first fund closed at around EUR 250M to back European pre-seed and seed companies, with a thesis centred on founder-led investing — every partner has built and scaled a venture-backed company. Plural is positioned as a counter to traditional partner-led firms, with deep operator support.
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PolyAI
PolyAI is a London-based conversational AI company founded in 2017 by Cambridge machine-learning researchers that builds voice assistants, which it calls customer experience agents, capable of handling natural, open-ended customer service calls for enterprises in banking, hospitality, retail and telecoms. Its systems handle millions of customer interactions, and it raised a 50 million dollar round in 2024 at a valuation of around 500 million dollars.
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Praktika.ai
Praktika.ai is an AI-native language learning platform focused on conversation-first fluency practice with realistic voice avatars. Founded in 2022, it helps users overcome speaking anxiety through real-time feedback on pronunciation and grammar, personalized lesson paths, and adaptive roleplay. The company has reported strong commercial traction and is backed by investors including Blossom Capital, Creator Ventures, and 500 Global.
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Prolific
Prolific operates an online marketplace that connects organisations with vetted, fairly paid human participants for data collection, surveys, and AI work. Founded in 2014 at the University of Oxford by Phelim Bradley and Ekaterina Damer, it began as a tool for academic researchers needing reliable study participants and has since expanded into AI training and evaluation. Today it supplies human data for tasks like reinforcement learning from human feedback, model red-teaming, AI evaluation, and specialist annotation, serving both academic institutions and commercial AI customers. It is headquartered in London.
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QCon London 2026
Practitioner-led software engineering conference focused on architecture, microservices, and AI/ML engineering. Price: about GBP 2350-2900. Ideal for dev-tool and infrastructure startups.
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QCon London 2027
QCon London 2027 runs its conference 13-15 April, with certification day on 16 April. Aimed at senior software engineers, architects and team leads, QCon London is practitioner-driven, curated by an in-house program committee of technologists, with tracks covering software architecture, engineering practices and emerging technology.
