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 181–200 of 243 London · United Kingdom
Other cities in United Kingdom
London · United Kingdom results
-
Quantexa
Quantexa is a London-founded decision intelligence platform that uses graph analytics, AI, and entity resolution to connect siloed enterprise data for fraud detection, risk management, and customer intelligence. Founded in 2016 by Vishal Marria, the company has raised over $360 million including a $153 million Series E, reaching unicorn status. Quantexa serves major banks, insurers, government agencies, and telcos across 70+ countries and employs over 700 people. It is one of the UK's most significant enterprise AI scale-ups, demonstrating how contextual data linkage can transform decision-making at institutional scale.
-
Rapyd
Rapyd is a London-headquartered fintech-as-a-service platform founded in 2016 by Arik Shtilman and Omer Priel, enabling businesses to accept global payments, send payouts, and embed financial services through a single API. The platform supports payment methods across 100+ countries and employs over 1,600 people globally. Rapyd reached a valuation of over $8.75 billion following a $300 million funding round in 2021 and is backed by Target Global, Stripe, General Catalyst, and Tiger Global. In 2025 Rapyd acquired PayU's Latin America and Africa payment operations.
-
Retail Technology Show 2026
Retail innovation event at ExCeL London showcasing payments, in-store analytics, loyalty platforms, and omnichannel solutions. Free for qualified retailers; vendors pay for exhibition space. Attracts 10,000+ retail technology buyers and decision-makers. Valuable for retail-tech startups seeking direct access to UK high-street and e-commerce buyers.
-
Retail Technology Show 2027
Retail Technology Show returns to ExCeL London on 21-22 April 2027, with exhibit and floorplan enquiries already open. The retail innovation event showcases payments, in-store analytics, loyalty platforms, and omnichannel solutions to thousands of retail technology buyers.
-
Revolut
Revolut is a British fintech company offering a “super-app” for digital banking and financial services. Launched in 2015 by founders Nik Storonsky (a former Credit Suisse trader from Russia) and Vlad Yatsenko (Ukrainian developer), Revolut began as a multicurrency travel card allowing users to spend and transfer money globally with minimal fees. It quickly evolved into a full-featured neobank. As of 2025, Revolut operates in 48+ countries and has 65 million customers worldwide, making it one of the fastest-growing fintechs ever. The app provides a suite of services: GBP and EUR bank accounts, debit cards, currency exchange for 30+ currencies at interbank rates, stock and crypto trading, person-to-person payments, bill splitting, and more. Revolut’s growth has been astonishing – it surpassed £3.1 billion in annual revenue in 2024 with £1.1 billion operating profit. The company has raised over $1.7 billion from investors like SoftBank, Tiger Global, and TCV, reaching a private valuation of $33 billion in 2021. In late 2025, a secondary share sale reportedly valued Revolut at $75 billion, vaulting it among the world’s most valuable fintechs. Revolut’s journey has not been without challenges: it faced regulatory hurdles (e.g. its UK banking license was long-delayed), compliance scrutiny, and had to strengthen its governance as it scaled. Nonetheless, the company achieved profitability in 2021 and has continued to grow its user base across Europe, North America, and Asia. Revolut’s mission is to become a “global financial super-app”, consolidating banking, investing, insurance, and payments in one place. It has introduced products like “Revolut Junior” accounts for kids, pay-later services, and expanded into credit in select markets. With over 10,000 employees worldwide, Revolut is now a regulated bank in the EU and other jurisdictions. Its story from scrappy travel card startup to a $75B-valued fintech giant with 65 million users epitomizes Europe’s fintech rise and the potential of challenger banks to rewrite banking norms.
-
Rishi Khosla
Co-founder and CEO of OakNorth, the SME-lending bank, which he started after struggling to get a loan for an earlier business. He previously co-founded Copal Amba, sold to Moody's.
-
Rob Whitehead
Co-founder and former CTO/CPO of Improbable, where he led development of the SpatialOS distributed-simulation engine. He met co-founder Herman Narula at the University of Cambridge.
-
Robin Tuluie
Co-founder of PhysicsX and a physicist who led performance and vehicle science at Formula 1 teams including Mercedes and Renault, where his work contributed to multiple championships.
-
RootCause.ai
RootCause.ai (legally Perceptura Ltd in the UK, with a sister entity Perceptura, Inc. in San Francisco) is a causal AI platform that connects enterprise data, automatically uncovers cause-and-effect relationships, and builds a dynamic digital twin of a business function so teams can simulate the impact of a decision before acting. It targets use cases such as root-cause analysis, churn reduction, forecast accuracy, downtime reduction, and pricing optimisation, with customers in telecom, financial services, and global logistics citing multi-million dollar savings and analysis that used to take months completed in hours.
-
Runware
Runware is an AI inference infrastructure company offering unified developer access to AI models for image generation, video generation, and audio synthesis through a single API endpoint. It aggregates hundreds of model classes and many model variants, letting developers switch between models with minimal friction. Its core technology is the proprietary Sonic Inference Engine, a custom-built hardware-and-software stack optimised for AI inference across different hardware and cloud providers. Runware evolved from an earlier consumer image tool called PicFinder and operates from offices in London and San Francisco.
-
RX (Reed Exhibitions)
RX (Reed Exhibitions) is a global events business and subsidiary of RELX Group that organises over 400 events annually across 22 countries and 43 industry sectors. The company creates professional meeting places combining face-to-face events with digital data and tools to help customers understand their markets and conduct business. RX is the official organiser of Big Data & AI Paris, France's leading professional conference on data and artificial intelligence.
-
SaaStr AI London 2026
European edition of the leading SaaS conference, bringing together B2B SaaS founders, operators, and investors for tactical sessions on scaling ARR, go-to-market strategy, and fundraising in the European market.
-
SBC Events
SBC Events (Sports Betting Community) is a leading organiser of international conferences and exhibitions for the sports betting and gaming industries, founded by Rasmus Sojmark in 2009 and headquartered in London. The company runs flagship events including SBC Summit Barcelona, SBC Summit Malta, SBC Summit Tbilisi, and events across the Americas and Asia, bringing together senior executives from betting, gaming, affiliates, technology, and sports media. SBC also operates media channels and advisory services, making it one of the most prominent event and media companies in the global iGaming sector.
-
ScaleUp Institute
The ScaleUp Institute was co-founded in 2015 by Sherry Coutu CBE and Reid Hoffman, following Coutu's 2014 Scale-Up Report for the UK government. It is a private-sector-led, not-for-profit organisation in London that works with policymakers, corporates, finance institutions, and educators to close the UK's scale-up gap. The institute publishes annual research, runs programmes, and provides policy advocacy to help fast-growth businesses become global companies.
-
Scope
London-based AI workflow platform transforming industrial inspection for the testing, inspection, and certification (TIC) sector. AI agents help field inspectors capture data through voice, video, and structured workflows, unlocking 50% more inspector capacity. Raised €17.2M Series A led by Index Ventures.
-
Seedcamp
Seedcamp is a London-based pre-seed and seed fund founded in 2007, often described as Europe's seed fund, that backs founders building globally ambitious technology companies. Its portfolio includes some of Europe's best-known startups, such as Wise, Revolut and UiPath, and it provides founders with capital and access to an extensive expert network.
-
Semble
Clinical platform and EHR for outpatient and private healthcare providers, connecting scheduling, billing, telehealth and patient records in one system. Serves 1,700 customers including Nuffield Health; 10M+ UK patients have been seen by a clinician using it.
-
Sequoia Capital
Sequoia Capital is a global venture firm that led ElevenLabs' $500M Series D round announced in February 2026 at an $11B valuation, with partner Andrew Reed joining the board. Sequoia also backs Bolt as it scaled its multi-vertical mobility platform across Europe.
-
Sifted Summit 2026
The annual gathering for Europe's scaleup leaders, run by the FT-backed Sifted. Programming covers fundraising, AI adoption, and sustainability, with a strong investor presence and the Sifted 250 leaderboard — valuable for a growth-stage founder raising or scaling.
-
Signal AI
AI-powered external intelligence platform that ingests media, social, broadcast and regulatory data across 226 markets and 75+ languages to deliver enterprise risk, reputation and ESG insights. Founded in London, 2013.
