London startup Sentinel Os Ltd secures £20k for AI cybersecurity platform

Safety-critical environments are the focus of a real-time operating system and cybersecurity platform developed by Sentinel Os Ltd. The London-based company recently secured £20k in a funding round, reaching an estimated post-money valuation of £1.2m.

The software integrates physical elements, such as cameras, sensors, and autonomous systems, with human operators. This process allows the technology to transform raw data into actionable intelligence, providing solutions for monitoring and consolidating security tools.

Target markets include critical institutions in the UK government, healthcare, transport, and aviation sectors. The firm also serves the utilities, energy, border, maritime, and public safety industries, where it provides operationally independent AI infrastructure.

The business was incorporated in April. This latest funding round was documented in filings made during September 2026 (with an allotment date also in September 2026).