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Top 99 SaaS startups in UK
Sep 21, 2025 | By Fernando Lopez | 20 |
1
Funding: $562.8M
Thought Machine is a Fintech company that builds cloud-native technology to revolutionize core banking.
Thought Machine is a Fintech company that builds cloud-native technology to revolutionize core banking.
2
Funding: $545M
Quantexa has built a machine learning platform branded “Contextual Decision Intelligence” (CDI) that analyses disparate data points to get better insight into nefarious activity
Quantexa has built a machine learning platform branded “Contextual Decision Intelligence” (CDI) that analyses disparate data points to get better insight into nefarious activity
3
Funding: $445M
Builder.ai offers a no-code AI-powered app development platform designed to build and operate software projects.
Builder.ai offers a no-code AI-powered app development platform designed to build and operate software projects.
4
Funding: $442.3M
Mews is an innovative hospitality management cloud platform that empowers the modern hotelier to provide remarkable guest experiences.
Mews is an innovative hospitality management cloud platform that empowers the modern hotelier to provide remarkable guest experiences.
5
Funding: $375.5M
CloudPay provides global payroll, treasury, and on-demand pay solutions to multinational organizations.
CloudPay provides global payroll, treasury, and on-demand pay solutions to multinational organizations.
6
Funding: $300.8M
Smart Pension is a workplace pension tailored specifically for UK businesses.
Smart Pension is a workplace pension tailored specifically for UK businesses.
7
Funding: $245M
Shop Circle is a technology company that acquires and grows e-commerce software.
Shop Circle is a technology company that acquires and grows e-commerce software.
8
Funding: $230.5M
Darktrace is an AI company that uses cybersecurity solutions to identify, prevent, and eliminate insider threats.
Darktrace is an AI company that uses cybersecurity solutions to identify, prevent, and eliminate insider threats.
9
Funding: $219M
Fresha is a SaaS-enabled marketplace platform for beauty and wellness industry.
Fresha is a SaaS-enabled marketplace platform for beauty and wellness industry.
10
Funding: $188.8M
Onfido is an AI-based technology that builds trust in an online world by helping businesses digitally verify people's identities.
Onfido is an AI-based technology that builds trust in an online world by helping businesses digitally verify people's identities.
11
Funding: $132.6M
Tessian creates a Human Layer Security that helps people work without security disruptions getting in the way.
Tessian creates a Human Layer Security that helps people work without security disruptions getting in the way.
13
Funding: $125M
Sophos develops network security and threat management products to protect organizations against malicious acts.
Sophos develops network security and threat management products to protect organizations against malicious acts.
14
Funding: €104.7M
PortSwigger Burp Suite is the leading toolkit for web application security testing.
PortSwigger Burp Suite is the leading toolkit for web application security testing.
15
Funding: $109.5M
Rossum's artificial intelligence understands complex structured documents, enabling companies to capture data from financial documents efficiently and with human-level accuracy. Unlike existing text mining solutions, Rossum's unique deep neural networks reflect the way humans read documents. This eliminates the need for costly manual implementation, a game changer in the data capture business.
Rossum's artificial intelligence understands complex structured documents, enabling companies to capture data from financial documents efficiently and with human-level accuracy. Unlike existing text mining solutions, Rossum's unique deep neural networks reflect the way humans read documents. This eliminates the need for costly manual implementation, a game changer in the data capture business.
16
Funding: $107.9M
Featurespace is a provider of adaptive behavioural analytics technology for fraud and risk management in financial services. The company has developed an ARIC platform, where it uses anomaly detection to analyse complex behavioural data in real time, spotting anomalies to block new fraud attacks as they occur.
Featurespace is a provider of adaptive behavioural analytics technology for fraud and risk management in financial services. The company has developed an ARIC platform, where it uses anomaly detection to analyse complex behavioural data in real time, spotting anomalies to block new fraud attacks as they occur.
17
Funding: $104.2M
BigChange is an information technology company that builds fleet management software for mobile workforces.
BigChange is an information technology company that builds fleet management software for mobile workforces.
18
Funding: $99.1M
Attest has built a cloud-based, no-code, big-data solution for customer research surveys
Attest has built a cloud-based, no-code, big-data solution for customer research surveys
19
Funding: $96.2M
incident.io is a slack-integrated incident management tool, designed to create, manage and resolve incidents directly in slack.
incident.io is a slack-integrated incident management tool, designed to create, manage and resolve incidents directly in slack.
20
Funding: $89.9M
With Xactly, companies unleash the motivational power of their incentive compensation.
With Xactly, companies unleash the motivational power of their incentive compensation.
