Ravelin is a London-based fraud prevention and payment optimisation platform founded in 2014. In February 2025, the company joined Worldpay. Its team is distributed across five continents.
The platform is built around machine learning, graph networks, and human-in-the-loop insights to detect and prevent fraud across the full customer journey. Its capabilities span online payment fraud, account security, refund abuse, and marketplace partner fraud - with an emphasis on predictive detection before fraudulent activity completes. Customers include Deliveroo, Just Eat, Trainline, Spotify, and KFC.
Ravelin's technical work sits at the intersection of AI, graph-based modelling, and applied fraud intelligence. The platform is described as AI-native, with responsible AI principles cited as central to how its systems are designed and operated. Human review is integrated alongside automated decision-making, rather than treated as a fallback.