As of May 2026, there are 2,146 SaaS companies based in London. They have combined revenues of $35.6B and employ 184K employees. They've raised $29.5B in capital and serve 112.1M customers combined.
Sorting: Highest -> Lowest
Showing 10 of 50 companies ranked by annual revenue.
London, England, United Kingdom
Revolut Group Holdings Ltd, known as Revolut, is a British multinational neobank that provides mobile app-based banking services, money transfers, currency exchange, and financial analytics.
London, England, United Kingdom
Infobip is a global leader in omnichannel engagement, offering a wide array of messaging channels and tools for advanced customer engagement, authentication, and security. We simplify complex consumer communications to help clients grow their business and enhance customer experiences quickly, securely, and reliably. As a quality-driven engineering powerhouse, we’ve grown over 15 years to include 70+ offices across six continents with over 3,700 experts. We’re committed to innovation, developing all our solutions in-house, and are proud of our talented team. Our approach is rooted in learning by doing, driven by a passion for technology.
London, England, United Kingdom
For making Forms, Quizzes, Surveys, Calculators, Apps - With Logic and Integrations. Easy and Powerful with Privacy focused. Works on all devices.
London, England, United Kingdom
Starling Bank is an award-winning and fully-licensed bank built to give people a fairer, smarter and more human alternative to the banks of the past. It offers personal, joint, and business accounts, including digital banking, financial, and accounting services.
London, England, United Kingdom
OakNorth Bank is a British bank for scaling businesses that provides loans and both business and personal banking services. It operates as a digital bank helping people turn money into positive outcomes such as savings into holidays or business loans into new restaurants.
London, England, United Kingdom
SumUp is a British financial technology company headquartered in London. SumUp's primary product is an EMV card reader and a number of online payment and banking solutions.
London, England, United Kingdom
Research Lab: Exploring new frontiers of voice generation. We are dedicated to researching and implementing innovative techniques in voice artificial intelligence (AI) to enhance the appeal of content across different languages and voices. Our goal is to reach new audiences and viewers by ensuring a more immersive and engaging experience.
London, England, United Kingdom
Provider of an online payments platform intended to track and secure digital payments across the Internet. The company's application integrates with an end-to-end payment technology that eliminates intermediaries, accepts multiple credit and debit cards, connects retailers with shopper's bank accounts, provides data-rich insights to track performance and drive approvals, supports addition of new payment methods without the need for additional integrations and lets users customize risk settings and get advice from expert fraud teams, enabling businesses to secure and promote mobile and online purchasing and manage risks without missing out on revenue.
London, England, United Kingdom
Zepz is a fast-growing international payments firm, delivering affordable online money transfers for customers in 50 markets to remit money to recipients, functioning as a digital cross-border payments platform with brands like WorldRemit and SendWave.
Each Tuesday, we reverse-engineer a real SaaS company's revenue, profit, CAC, funnels, and its top growth tactic.
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