London startup directory
Hand-picked startups, investors, and ecosystem operators in London, with a custom city illustration in europe-startup-guide.com brand colors.
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Games London
Games London is a London games-industry body whose stated mission is to make London the games capital of the world. It runs the London Games Festival, which draws over 100,000 visitors across a fortnight of public and trade programming, and operates year-round support for games creators including the Game Changer talent programme and the Games London Accelerator.
General Catalyst (Europe)
General Catalyst is a global venture capital firm that expanded aggressively into Europe through its London office. The firm invests across stages from seed to growth and has become one of the most active US-origin VCs in European tech, backing companies including Helsing, Parloa, Mistral AI, and PhysicsX. General Catalyst focuses on AI, defense tech, enterprise software, and climate, and manages over $25 billion in total assets.
Genesis 2026
The 26th edition of One Nucleus's flagship London life-science networking conference, themed around maximising returns from life-science innovation. For a biotech or life-science founder it is a focused day of partnering and investor networking within the UK life-sciences cluster.
GIANT Health 2026
A two-day NHS innovation festival with six distinct shows under one roof and hundreds of speakers at the Business Design Centre, London. For a healthtech founder it offers concentrated access to NHS leaders, clinicians, and health investors — useful for validation, partnerships, and early traction.
GoCardless
GoCardless is a London-based fintech founded in 2011 that specialises in collecting recurring bank-to-bank payments, processing Direct Debit and open banking payments for businesses across Europe, North America and Australia. It reached unicorn status in 2022 and handles tens of billions of dollars in payment volume each year for tens of thousands of merchants.
Goodlord
Goodlord is a UK proptech company providing software for the lettings industry, covering tenant referencing, rent-protection and buildings insurance, tenant payments, guarantor services, contract generation, utility management and tenancy progression through end of tenancy. It serves letting agents, landlords and tenants, and publishes an annual Goodlord Rental Index report on the UK rental market.
GovNet
GovNet is a London-based events business that has produced public-sector conferences, exhibitions and industry magazines since 1997, describing itself as the UK's leading provider of public sector events. Its programme spans healthcare, education, central and local government and justice, connecting technology suppliers with senior public-sector decision makers. Its healthcare technology flagship is the HETT Show at ExCeL London. The company is based at 25 Eccleston Yards in London.
Granola
Granola is a London-based maker of an AI-powered meeting notepad. The app combines a user's own typed notes with AI-generated content derived from a meeting's audio transcript, and captures audio directly from the user's device rather than sending a visible bot into video calls. It works across platforms such as Zoom, Google Meet, and Microsoft Teams, and offers calendar integration, pre-meeting briefings, an AI chat over meeting context, and an iPhone app for in-person notes. The company was founded in 2023 by Chris Pedregal and Sam Stephenson and has expanded from an individual meeting notetaker toward a collaborative AI workspace for teams.
Greg Orlowski
Co-founder and former CTO of Deliveroo, where he built the early technology platform alongside Will Shu before the company's rapid European expansion.
Guillaume Pousaz
Founder and CEO of Checkout.com, the payments processor he bootstrapped before it became one of Europe's most valuable fintechs. A Swiss entrepreneur based in London, he is among the wealthiest people in UK tech.
Guy Podjarny
Co-founder of Snyk, the developer-security company, and previously CTO of Akamai's web-experience business after it acquired his startup Blaze. A prolific application-security expert and author.
Harry Nelis
Partner at Accel in London, investing in enterprise software, AI and fintech. His portfolio includes Vinted, Celonis, Miro, Deliveroo and Personio, and he has been a long-standing figure in Accel's European franchise.
Herman Narula
Co-founder and CEO of Improbable, the simulation and virtual-worlds company backed by a16z and SoftBank. He is a vocal advocate for the technical foundations of the metaverse.
HETT Show 2026
The UK's leading digital-health conference and exhibition, bringing NHS leaders, policymakers, clinicians, and tech companies together at ExCeL London. For a healthtech founder it is the key venue to understand NHS procurement, demo to buyers, and meet partners driving digital transformation in care.
HiBob
All-in-one HR platform ('Bob') for mid-sized and multinational companies covering core HR, talent, payroll, benefits, workforce planning and an embedded AI assistant. Founded 2015 with London and Tel Aviv roots.
Homeppl
Homeppl is a London-based customer risk platform that helps real estate and lending businesses reveal fraud, verify income and affordability, and qualify applicants using open banking data, document analysis, and a fraud database. Its products include Fraud Finder for document fraud detection and financial qualification tools used by clients such as Knight Frank, Quintain Living, and Portman Asset Finance to cut fraud losses and speed up approvals. Homeppl operates as a trading name of Thirdfort Limited, a UK company registered in London.
Hometree
Hometree is a London-based home cover and energy services provider offering boiler and home emergency cover, plumbing and drains cover, appliance cover, and landlord plans across mainland England, Scotland and Wales, alongside renewable energy installations including heat pumps and solar panels. The company promises no unfair price hikes at renewal and offers 24/7 claims support with a UK-based call centre. It operates as a trading name of Hometree Services Limited and Hometree Marketplace Limited, both regulated by the UK Financial Conduct Authority.
Hopin
Virtual and hybrid event platform enabling immersive conferences, expos, and town halls. Hopin is a startup based in London, United Kingdom at the growth stage. The company operates in the Events, Software space. Learn more at their website.
Hoxton Ventures
Hoxton Ventures is a London firm that calls itself European venture with a Silicon Valley mindset, backing companies in Europe and the US and pushing them at the US market early. It is deliberately anti-thematic, investing in new market categories that are not obvious at the time, and names Deliveroo, Darktrace and Preply among roughly 90 portfolio companies.
ICONIQ Growth
ICONIQ Growth is the growth-equity and venture arm of ICONIQ, investing in technology companies from early traction through IPO and beyond. It partners with founders at critical inflection points across software, fintech and other sectors, and invests internationally including from a London presence.
