UK-based cybersecurity startup Theodosian has raised $1.3 million in a pre-seed round led by Fuel Ventures, with participation from D11Z Ventures, 1818 Venture Capital, Heartfelt, Startup Wise Guys, and several angel investors.
Theodosian provides enterprise-grade, file-level encryption and access control, delivering a persistent layer of protection that travels with data, supports compliance across multiple regulatory frameworks, and helps mitigate both human error and cyberattacks. Founded by cybersecurity practitioners with over a decade of experience across defence, intelligence, banking, and healthcare, the company focuses on a “second layer” of defence that embeds controls directly at the file level.
The platform enables per-file permissions and conducts 20–30 compliance-aligned checks per document. It is designed to help organisations prepare for emerging standards, including the UK’s Defence Cyber Certification (DCC) and the US Cybersecurity Maturity Model Certification (CMMC), strengthening both compliance and overall security posture.
According to Andy Johnson, co-founder of Theodosian, the company was founded to close a major gap in enterprise security by ensuring that each file remains protected wherever it is shared or stored.
Our platform goes beyond traditional encryption, offering persistent, per-file dynamic access controls, detailed permission management, and continuous verification to ensure only the right people can access sensitive data. With Fuel Ventures’ support, we can bring these capabilities to market quickly, helping companies comply with regulations, including new DCC standards, and significantly reduce the risk of data breaches.
The funding will support completion of v1 of the product and the start of commercial scaling.
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