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 21–40 of 243 London · United Kingdom
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Andreessen Horowitz (a16z)
Andreessen Horowitz is a global venture firm that led ElevenLabs' early growth rounds and participated again in the company's 2026 Series D. The firm is active across AI infrastructure, developer tools, enterprise software, and consumer internet.
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Artificial
Artificial, operating as Artificial Labs, provides digital broking and underwriting technology for the specialty and commercial insurance markets, with a focus on the Lloyd's of London and global wholesale London market. Its two primary products are Smart Underwriting, a digital underwriting platform helping carriers deploy capital on lead and follow risks, and Smart Placement, placement-strategy tooling for brokers. Reported partners include Apollo, PPL, Lockton, Convex, Chaucer, and BMS Group. Headquartered in London, the company raised a $45M Series B in February 2026 to fund global expansion.
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Aspora
Aspora, formerly known as Vance, is a cross-border banking and remittance fintech for the Indian diaspora, primarily serving non-resident Indians sending money to India. It offers international money transfers at live mid-market exchange rates, alongside expanding products including currency savings accounts, bill payments, and mutual-fund investing, with further banking, credit, and insurance services planned. The company launched as Vance in Y Combinator's Winter 2022 batch and rebranded to Aspora in April 2025. It is headquartered in London with additional offices in Bengaluru and Dubai.
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Atomico
Atomico is a leading European venture capital firm founded in 2006 by Niklas Zennström, the co-founder of Skype. Headquartered in London with roots in Stockholm, Atomico focuses on backing ambitious tech founders across Europe at Series A and beyond. The firm manages several billion dollars across multiple funds and has built a portfolio of household names. Atomico’s approach leverages Zennström’s global experience – the firm often helps startups expand internationally and recruits senior talent via its notable “Executive-in-Residence” program. Atomico has invested in companies spanning fintech, deep tech, software, and consumer internet. Notable successes include Klarna (the Swedish fintech giant), Supercell (Finnish gaming, acquired by Tencent), Graphcore (UK AI chips), and MessageBird (Netherlands communications platform). Atomico was also an early backer of Stripe in the US and Viagogo. The firm is known for publishing the annual “State of European Tech” report, reflecting its thought leadership in the ecosystem. In terms of investment size, Atomico typically leads or co-leads Series A–C rounds with cheques of $5–$50 million, and it has the capacity to follow-on through later stages. It closed its fifth fund of $820 million in 2020 and a $1.2 billion fund in 2022, underscoring investor confidence in European tech. Atomico’s team includes partners with experience at Google, Uber, Spotify, and more – providing operational support to portfolio founders. The firm also stands out for its commitment to sustainability and diversity, integrating impact considerations and backing companies tackling climate change. Atomico’s influence is evidenced by the fact that as of 2025 it has produced five IPOs and multiple $10B+ exits in Europe. In summary, Atomico has established itself as a premier VC “built by founders for founders,” fueling Europe’s ascent with capital, expertise, and global networks.
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Balderton Capital
Balderton Capital is one of Europe’s most established venture capital firms focused on early-stage technology companies. Based in London, Balderton was founded in 2000 as the European arm of Benchmark Capital and became independent in 2007. It has since raised ten funds dedicated to European startups, with over $4 billion in assets under management. Balderton primarily invests at Series A, typically leading rounds of $5–15 million and taking significant minority stakes. The firm’s portfolio spans a wide range of sectors – from fintech and marketplaces to SaaS and gaming – reflecting Europe’s diversity. Notable investments include Revolut (fintech, which Balderton backed at Series A), The Hut Group (UK e-commerce, now public), Darktrace (cybersecurity, IPO 2021), MySQL (acquired by Sun Microsystems), Citymapper (urban transport app), GoCardless (payments) and Vestiaire Collective (fashion resale). Balderton has consistently been among the most active Series A investors in Europe; in 2022 it deployed capital into 20+ new companies and many follow-ons. The firm is known for its strong founder support and an ethos of “teamwork” – all partners share carry evenly, which encourages collective input on portfolio companies. General Partners like Bernard Liautaud (founder of Business Objects) and Suranga Chandratillake (founder of Blinkx) bring operator experience. In recent years Balderton also launched a liquidity fund to buy secondary shares from European tech founders and early employees, reflecting a maturing ecosystem. The firm has also been vocal on issues like startup diversity and European tech sovereignty. With successes such as Revolut’s rise to $33B valuation and Darktrace’s IPO (Balderton held ~18% at listing), Balderton has proven that European VCs can deliver world-class returns. It continues to invest actively across Europe – from Stockholm to Tel Aviv – aiming to partner with founders “with global ambition.” In the constellation of European VC, Balderton Capital is often mentioned alongside Accel and Index as the top choice for Series A funding, thanks to its track record and deep network built over two decades.
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Bett
Organizer of Bett UK, the world's leading education technology trade show and conference held annually at London's ExCel centre since 1985. Drawing over 30,000 educators, edtech founders, and investors, Bett showcases classroom innovation, AI in learning, and digital curriculum tools, serving as a launchpad for global edtech startups.
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Bett UK 2026
Leading global education technology event held at ExCeL London, bringing together 30,000+ educators, EdTech innovators, and policymakers. Features product demos, workshops, and networking focused on classroom technology, digital learning platforms, and AI in education. Particularly relevant for EdTech startups seeking school district partnerships and institutional buyers.
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Bett UK 2027
Bett UK 2027 runs 20-22 January at ExCeL London. The show is the UK edition of the global Bett education-technology series, bringing together schools, universities and edtech companies to showcase and discuss technology for teaching and learning.
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Big Data LDN
Organiser of Big Data LDN, the UK's largest free-to-attend data, analytics and AI conference and exhibition at Olympia London. The event hosts hundreds of seminars and exhibitors spanning data platforms, AI agents, governance and analytics for the data community.
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Big Data LDN 2026
The UK's largest free data, analytics and AI conference and exhibition at Olympia London, with 400+ seminars on data platforms, AI agents, AI governance and data products. Exhibitors range from Snowflake, Databricks and Google Cloud to data startups, making it strong for data and AI founders.
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Brent Hoberman
A well-known UK tech entrepreneur (Lastminute.com) and investor, Brent has a footprint in Poland via his fund Firstminute and personally. He’s invested in Polish AI ventures and often speaks highly of Poland’s tech scene. Associated startups: Cosmose AI, Digital Pharmacy (examples of Polish startups he’s supported).
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Carl Pei
Co-founder and CEO of Nothing, the London consumer-electronics brand behind the Phone and Ear products. He previously co-founded OnePlus and is one of the most closely followed hardware founders in tech.
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Carlos Espinal
Carlos Espinal is Managing Partner at Seedcamp, Europe's pre-seed fund, which he joined in 2009 after earlier stints at Doughty Hanson Technology Ventures and roles at NYSE's SIAC group and cybersecurity firm GTE Cybertrust. He holds a BS in Industrial Management from Carnegie Mellon and an MBA from Babson College, and has helped build a portfolio of over 400 companies including European unicorns UiPath and Revolut. Named Investor of the Year 2021 by GP Bullhound, he is also the author of The Fundraising Fieldguide and was awarded an MBE.
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Carwow
Carwow is a London-based online car marketplace that lets buyers compare new car deals from a network of dealers and sell their existing car for a fair, free, no-hassle price. The platform covers both new and used vehicles, including electric cars, and shows average savings against manufacturer RRP based on daily dealer pricing. Carwow Ltd is authorised and regulated by the UK Financial Conduct Authority for credit broking and insurance distribution activities, and it also operates the leasing business Carwow Leasey.
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Cazoo
Cazoo was a London-based online used car platform founded in 2018 by Alex Chesterman, the serial entrepreneur behind Zoopla and LoveFilm. The company aimed to bring the Carvana model to Europe, allowing consumers to buy, finance, and have used cars delivered to their door. Cazoo went public via SPAC on the NYSE in 2021 at a valuation of around $7 billion and expanded aggressively into France, Germany, Spain, and Italy. However, rapid cash burn and a cooling market led to a retreat from continental Europe and a delisting from the NYSE in 2024. Cazoo's trajectory became a cautionary tale in European tech about the risks of capital-intensive consumer marketplaces scaling too fast.
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Checkout.com
Checkout.com is a London-headquartered payments infrastructure company that provides a unified API for online payment processing, supporting card payments, local payment methods, and payouts across 150+ currencies. The company serves enterprise merchants including Klarna, Coinbase, Sony, and Grab, and was valued at $40 billion at its peak in 2022. Checkout.com competes directly with Adyen and Stripe in the enterprise payments space.
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Cisco Live Europe 2027
Cisco Live Europe moves from Amsterdam to London for 2027, running 8-12 February with registration now open. The large-scale IT and networking conference features training labs, cloud infrastructure sessions, and the World of Solutions expo, with a DevNet Zone relevant for developer founders and platform integrations.
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CityFibre
CityFibre is a full-fiber digital infrastructure scale-up building wholesale fiber networks across the UK. The company partners with ISPs and mobile operators to replace legacy connectivity with gigabit-capable infrastructure that supports residential broadband, enterprise services, and future smart-city and 5G capacity.
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Cleo
Cleo is a London-based fintech founded in 2016 that offers an AI-powered money assistant delivered as a chat app, helping mostly younger users in the US and UK budget, save, manage debt and improve their financial health through conversational nudges and cash-advance features. It reached unicorn status on the back of rapid US growth.
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CloserStill Media
Global B2B events organiser headquartered in London, running technology and marketing shows including eCommerce Expo, Technology for Marketing, Tech Show London and Big Data & AI World. CloserStill Media produces market-leading exhibitions connecting solution providers with enterprise and SME buyers.
