As of July 2026, there are 2,154 SaaS companies based in London. They have combined revenues of $36.8B and employ 184.6K employees. They've raised $29.8B in capital and serve 112.1M customers combined.
Sorting: Highest -> Lowest
Showing 10 of 758 companies ranked by annual revenue.
London, England, United Kingdom
Proxidize is a mobile proxy solution provider that offers an all-in-one package from hardware to software. From building to managing mobile proxy networks, Proxidize simplifies the process. It provides the necessary tools for creating and maintaining a robust proxy infrastructure, making it easier for users to customize and manage their networks effectively.
London, England, United Kingdom
Messly is a SaaS, Professional Network that helps doctors find their next role in healthcare.
London, England, United Kingdom
A powerful SaaS platform engineered to provide our clients a secure,flexible & scalable service upon which to conduct their daily operations
London, United Kingdom
Protecting the world's information against today's threats and tomorrow's challenges
London, England, United Kingdom
Delivering universal customer engagement through our Gnatta software. Trusted by some of the biggest names in retail.
London, England, United Kingdom
Kalido is an amazing AI powered platform that matches enterprise workforce skills and strengths to people, teams, projects and jobs.
London, England, United Kingdom
Provider of sales-force managed services intended to help companies implement effective and automated business processes. The company's sales-force managed services provides full implementation of sales-force cloud system, staffs and technical training, enabling businesses to significantly increase sales by selling faster and smarter.
London, England, United Kingdom
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Each Tuesday, we reverse-engineer a real SaaS company's revenue, profit, CAC, funnels, and its top growth tactic.
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