Rellen Ltd raises £350k for AI-driven interview intelligence

London-based software developer Rellen Ltd has secured an estimated £350k in new funding. The company, incorporated in January 2025, produces the SecretSight computer-vision platform to detect markers of unreliable information in real time. Its technology is marketed to organisations in border security, immigration, law enforcement, insurance, and banking.

The platform uses facial behaviour analysis, machine learning, and artificial intelligence to provide conversational science expertise on-site. This patent-pending tool is designed to be language-agnostic and ethically governed, assisting teams with high throughput pressure or cognitive overload. Rellen claims its software can reduce interview-related processing by up to 30% and increase successful case outcomes by up to 15% by surfacing missed lines of enquiry through unseen behavioural markers.

The business currently employs five people. This investment brings the total funding raised by the firm during 2026 to £550k. The round was formalised in July 2026 following an allotment of shares in May 2026.