UK-based cybersecurity startup Theodosian, which specialises in advanced file-level encryption and compliance solutions for enterprises, has secured $1.3m in a pre-seed funding round led by Fuel Ventures.
The funding round also saw participation from European investment firms including D11Z Ventures, 1818 Venture Capital, Heartfelt and Startup Wise Guys, along with a group of high-profile angel investors.
Theodosian, founded by a team of seasoned cybersecurity professionals with experience across the defence, banking, healthcare and intelligence sectors, aims to strengthen enterprise resilience by embedding persistent protection directly at the file level. Its technology is designed to ensure that sensitive data remains secure regardless of where it moves.
The new capital will enable Theodosian to finalise version 1 of its product and scale its customer base as it launches into the market.
The company’s platform supports emerging standards such as the UK’s Defence Cyber Certification (DCC) and the US Cybersecurity Maturity Model Certification (CMMC).
Theodosian’s system provides dynamic, per-file access permissions and runs up to 30 compliance checks per document, allowing enterprises to ensure continuous data protection and regulatory readiness.
Fuel Ventures founder Mark Pearson said: “Theodosian is building the next generation of enterprise cybersecurity, protecting data at the most granular level while keeping compliance at the forefront. The team’s deep expertise in cybersecurity and risk management makes them ideally positioned to tackle this challenge, and we’re thrilled to support them at this early stage.”
Theodosian co-founder Andy Johnson commented: “We started Theodosian to address a critical gap in enterprise security, protecting every file individually, wherever it goes. 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.”
Co-founder Brendan Diaz added: “This funding allows us to not only introduce a new approach to data security to the market, but to focus on delivering tangible value to our customers. By giving enterprises and security teams granular control over files, reducing the risk of breaches, and simplifying day-to-day security management, Theodosian lets teams focus on what matters most while ensuring sensitive data stays protected wherever it travels.
“Our goal is to make enterprise security effortless and reliable, so teams can collaborate with confidence and compliance is always built in.”
Read the daily FinTech news
Copyright © 2025 FinTech Global
Copyright © 2018 RegTech Analyst
